postgres.git / summary / log / commit / refs

commit    fe6a64a58ab3e5bda3aceee2f1ee3e8efdb03865
Author:   Andres Freund <andres@anarazel.de>
Date:     Sat Sep 10 02:11:49 2022 +0000
First released in: 16.0

    aix: No need to use mkldexport when we want to export all symbols
    
    When building a shared library with exports.txt there's no need to build an
    intermediary static library, we can just pass -Wl,-bE:... when generating the
    .so.
    
    When building a shared library without exports.txt, there's no need to call
    mkldexport.sh to export all symbols, because all symbols are exported anyway,
    and we don't need the export file on the import side (like we do for
    postgres.imp).
    
    This makes building .so's on aix a lot more similar to building on other
    platforms. In particular, we don't create and remove a .a of the same name but
    different contents anymore.
    
    Discussion: https://postgr.es/m/20220820174213.d574qde4ptwdzoqz@awork3.anarazel.de


 src/Makefile.shlib         | 45 ++++++++++++++++++---------------------------
 src/makefiles/Makefile.aix |  8 ++------
 2 files changed, 20 insertions(+), 33 deletions(-)

diff --git a/src/Makefile.shlib b/src/Makefile.shlib
index 1e09ab8ea62..db466b3b845 100644
--- a/src/Makefile.shlib
+++ b/src/Makefile.shlib
@@ -107,12 +107,17 @@ override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION)
 endif
 
 ifeq ($(PORTNAME), aix)
+  LINK.shared		= $(COMPILER)
   ifdef SO_MAJOR_VERSION
     shlib		= lib$(NAME)$(DLSUFFIX).$(SO_MAJOR_VERSION)
   endif
   haslibarule   = yes
   # $(exports_file) is also usable as an import file
   exports_file		= lib$(NAME).exp
+  BUILD.exports		= ( echo '\#! $(shlib)'; $(AWK) '/^[^\#]/ {printf "%s\n",$$1}' $< ) > $@
+  ifneq (,$(SHLIB_EXPORTS))
+    LINK.shared		+= -Wl,-bE:$(exports_file)
+  endif
 endif
 
 ifeq ($(PORTNAME), darwin)
@@ -259,9 +264,15 @@ $(stlib): $(OBJS) | $(SHLIB_PREREQS)
 	touch $@
 endif #haslibarule
 
+# AIX wraps shared libraries inside a static library, can be used both
+# for static and shared linking
+ifeq ($(PORTNAME), aix)
+$(stlib): $(shlib)
+	rm -f $(stlib)
+	$(AR) $(AROPT) $(stlib) $(shlib)
+endif # aix
 
 ifeq (,$(filter cygwin win32,$(PORTNAME)))
-ifneq ($(PORTNAME), aix)
 
 # Normal case
 $(shlib): $(OBJS) | $(SHLIB_PREREQS)
@@ -274,9 +285,12 @@ ifneq ($(shlib), $(shlib_major))
 endif
 # Make sure we have a link to a name without any version numbers
 ifneq ($(shlib), $(shlib_bare))
+# except on AIX, where that's not a thing
+ifneq ($(PORTNAME), aix)
 	rm -f $(shlib_bare)
 	$(LN_S) $(shlib) $(shlib_bare)
-endif
+endif # aix
+endif # shlib_bare
 endif # shlib_major
 
 # Where possible, restrict the symbols exported by the library to just the
@@ -285,36 +299,13 @@ endif # shlib_major
 # libpgport along with libpq.
 ifneq (,$(SHLIB_EXPORTS))
 ifdef BUILD.exports
-$(shlib): $(SHLIB_EXPORTS:%.txt=%.list)
+$(shlib): $(exports_file)
 
-$(SHLIB_EXPORTS:%.txt=%.list): %.list: %.txt
+$(exports_file): $(SHLIB_EXPORTS)
 	$(BUILD.exports)
 endif
 endif
 
-else # PORTNAME == aix
-
-# AIX case
-
-# See notes in src/backend/parser/Makefile about the following two rules
-$(stlib): $(shlib)
-	touch $@
-
-$(shlib): $(OBJS) | $(SHLIB_PREREQS)
-	rm -f $(stlib)
-	$(LINK.static) $(stlib) $^
-	$(RANLIB) $(stlib)
-ifeq (,$(SHLIB_EXPORTS))
-	$(MKLDEXPORT) $(stlib) $(shlib) >$(exports_file)
-else
-	( echo '#! $(shlib)'; $(AWK) '/^[^#]/ {printf "%s\n",$$1}' ${srcdir}/$(SHLIB_EXPORTS) ) >$(exports_file)
-endif
-	$(COMPILER) -o $(shlib) $(stlib) -Wl,-bE:$(exports_file) $(LDFLAGS) $(LDFLAGS_SL) $(SHLIB_LINK)
-	rm -f $(stlib)
-	$(AR) $(AROPT) $(stlib) $(shlib)
-
-endif # PORTNAME == aix
-
 else # PORTNAME == cygwin || PORTNAME == win32
 
 ifeq ($(PORTNAME), cygwin)
diff --git a/src/makefiles/Makefile.aix b/src/makefiles/Makefile.aix
index 9408c1e2913..56d7f22aff6 100644
--- a/src/makefiles/Makefile.aix
+++ b/src/makefiles/Makefile.aix
@@ -38,9 +38,5 @@ endif
 MKLDEXPORT_DIR=src/backend/port/aix
 MKLDEXPORT=$(top_srcdir)/$(MKLDEXPORT_DIR)/mkldexport.sh
 
-%.exp: %.o
-	$(MKLDEXPORT) $^ >$@
-
-# Rule for building a shared library from a single .o file
-%$(DLSUFFIX): %.o %.exp
-	$(CC) $(CFLAGS) $*.o $(LDFLAGS) $(LDFLAGS_SL) -o $@ -Wl,-bE:$*.exp $(BE_DLLLIBS)
+%$(DLSUFFIX): %.o
+	$(CC) $(CFLAGS) $*.o $(LDFLAGS) $(LDFLAGS_SL) -o $@ $(BE_DLLLIBS)


[parent: b7050e258480]