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pgsql: meson: Fix ccache issues when using precompiled headers with gcc 5+ messages / 1 participants [nested] [flat]
* pgsql: meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-17 15:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 5+ messages in thread From: Andres Freund @ 2026-07-17 15:27 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org meson: Fix ccache issues when using precompiled headers with gcc Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/cf9d76d78d69aa0b11a50a50b31aa83506304cac Modified Files -------------- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) ^ permalink raw reply [nested|flat] 5+ messages in thread
* pgsql: meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-17 15:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 5+ messages in thread From: Andres Freund @ 2026-07-17 15:27 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org meson: Fix ccache issues when using precompiled headers with gcc Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added Branch ------ REL_19_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/6a90e70415efe1137d58072331f9101e0a00a4e6 Modified Files -------------- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) ^ permalink raw reply [nested|flat] 5+ messages in thread
* pgsql: meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-17 15:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 5+ messages in thread From: Andres Freund @ 2026-07-17 15:27 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org meson: Fix ccache issues when using precompiled headers with gcc Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/125893ce83b8218db8446f5f6f416cdbf9e80f7b Modified Files -------------- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) ^ permalink raw reply [nested|flat] 5+ messages in thread
* pgsql: meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-17 15:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 5+ messages in thread From: Andres Freund @ 2026-07-17 15:27 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org meson: Fix ccache issues when using precompiled headers with gcc Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added Branch ------ REL_17_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/fc358af65e2a366012804eecb24a319335b80229 Modified Files -------------- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) ^ permalink raw reply [nested|flat] 5+ messages in thread
* pgsql: meson: Fix ccache issues when using precompiled headers with gcc @ 2026-07-17 15:27 Andres Freund <andres@anarazel.de> 0 siblings, 0 replies; 5+ messages in thread From: Andres Freund @ 2026-07-17 15:27 UTC (permalink / raw) To: pgsql-committers@lists.postgresql.org meson: Fix ccache issues when using precompiled headers with gcc Unfortunately the combination of gcc, precompiled headers, ccache and meson currently is not safe without further options. The dependencies emitted by gcc are insufficient to trigger rebuilds when headers "below" the precompiled headers are changed. Whether that's a ccache, gcc or meson bug is debatable. Luckily gcc's -fpch-deps option fixes the issue. This problem occasionally leads to build failures, e.g. if only c.h, postgres.h or pg_config_manual.h change. That's e.g. the case when creating a new major version branch. Reviewed-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAN55FZ0tqR6Xz%3DiVFLc1BBoLOEHU775ARhcGYwggHA3XLA%3DoQg%40mail.gmail.com Discussion: https://postgr.es/m/CA+hUKG+s7Yvt0PUnSQUEjCjysV-7-51n9B1h468Le3VJi0x4ZQ@mail.gmail.com Discussion: https://postgr.es/m/phsrssp75npoyalqsolcd7fmnmlbzbmquc2p7w7mqjlw7432jk@bzskz3luyjvb Discussion: https://github.com/ccache/ccache/issues/1686 Backpatch-through: 16, where meson support was added Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/42413e702913135efafa9180d0f101c455101ac5 Modified Files -------------- meson.build | 6 ++++++ 1 file changed, 6 insertions(+) ^ permalink raw reply [nested|flat] 5+ messages in thread
end of thread, other threads:[~2026-07-17 15:27 UTC | newest] Thread overview: 5+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2026-07-17 15:27 pgsql: meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-17 15:27 pgsql: meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-17 15:27 pgsql: meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-17 15:27 pgsql: meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de> 2026-07-17 15:27 pgsql: meson: Fix ccache issues when using precompiled headers with gcc Andres Freund <andres@anarazel.de>
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