agora inbox for pgsql-hackers@postgresql.orghelp / color / mirror / Atom feed
[PATCH] Turn protective Assert() into elog(ERROR) 266+ messages / 2 participants [nested] [flat]
* [PATCH] Turn protective Assert() into elog(ERROR) @ 2026-05-01 07:23 Álvaro Herrera <alvherre@kurilemu.de> 0 siblings, 0 replies; 266+ messages in thread From: Álvaro Herrera @ 2026-05-01 07:23 UTC (permalink / raw) --- src/backend/access/index/genam.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/backend/access/index/genam.c b/src/backend/access/index/genam.c index 97d44b84622..7d401e3f137 100644 --- a/src/backend/access/index/genam.c +++ b/src/backend/access/index/genam.c @@ -396,11 +396,13 @@ systable_beginscan(Relation heapRelation, /* * If this backend promised that it won't access shared catalogs during - * logical decoding, this it the right place to verify. + * logical decoding, this is the right place to verify. */ - Assert(!HistoricSnapshotActive() || - accessSharedCatalogsInDecoding || - !heapRelation->rd_rel->relisshared); + if (HistoricSnapshotActive() && + !accessSharedCatalogsInDecoding && + heapRelation->rd_rel->relisshared) + elog(ERROR, + "cannot access shared catalog with database-specific historic snapshot"); if (indexOK && !IgnoreSystemIndexes && -- 2.47.3 --k6vxbflu22czkb7a-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
* [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-15 19:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 266+ messages in thread From: Andres Freund @ 2026-07-15 19:27 UTC (permalink / raw) Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added --- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meson.build b/meson.build index 61b5681851e..f4cde249242 100644 --- a/meson.build +++ b/meson.build @@ -2185,6 +2185,12 @@ common_functional_flags = [ # Disable optimizations that assume no overflow; needed for gcc 4.3+ '-fwrapv', '-fexcess-precision=standard', + # Without -fpch-deps gcc emits dependencies that are insufficient for ccache + # to trigger a rebuild when the precompiled header changes. We could make + # this depend on using gcc and precompiled headers being enabled, but that's + # probably not worth it. See also + # https://github.com/ccache/ccache/issues/1686 + '-fpch-deps', ] cflags += cc.get_supported_arguments(common_functional_flags) -- 2.54.0.450.g9ac3f193c0 --lrkjybh77g2jf2vx-- ^ permalink raw reply [nested|flat] 266+ messages in thread
end of thread, other threads:[~2026-07-15 19:27 UTC | newest] Thread overview: 266+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2026-05-01 07:23 [PATCH] Turn protective Assert() into elog(ERROR) Álvaro Herrera <alvherre@kurilemu.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-15 19:27 [PATCH v2] meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de>
This inbox is served by agora; see mirroring instructions for how to clone and mirror all data and code used for this inbox