From a6983d4e42a243094adc1efd48dfe4f5c26dd3a7 Mon Sep 17 00:00:00 2001 From: AIX-dev Date: Tue, 3 Feb 2026 08:08:27 -0600 Subject: [PATCH] AIX support for GNU build. --- Makefile | 2 -- configure | 1 + configure.ac | 1 + src/Makefile.shlib | 42 ++++++++++++++++++++++++++++++ src/backend/Makefile | 38 +++++++++++++++++++++++++-- src/backend/utils/misc/ps_status.c | 4 +-- src/include/port/aix.h | 3 +++ src/makefiles/Makefile.aix | 16 ------------ src/template/aix | 18 +++++++++++++ 9 files changed, 103 insertions(+), 22 deletions(-) mode change 100755 => 100644 src/makefiles/Makefile.aix create mode 100644 src/template/aix diff --git a/Makefile b/Makefile index 8a2ec9396b6..9bc1a4ec17b 100644 --- a/Makefile +++ b/Makefile @@ -13,8 +13,6 @@ # AIX make defaults to building *every* target of the first rule. Start with # a single-target, empty rule to make the other targets non-default. -# (We don't support AIX anymore, but if someone tries to build on AIX anyway, -# at least they'll get the instructions to run 'configure' first.) all: all check install installdirs installcheck installcheck-parallel uninstall clean distclean maintainer-clean dist distcheck world check-world install-world installcheck-world: diff --git a/configure b/configure index 5adfb3eba45..e9a4b184bfe 100755 --- a/configure +++ b/configure @@ -3022,6 +3022,7 @@ else # --with-template not given case $host_os in + aix*) template=aix ;; cygwin*|msys*) template=cygwin ;; darwin*) template=darwin ;; dragonfly*) template=netbsd ;; diff --git a/configure.ac b/configure.ac index a5eab2e5fff..9ac827a5b6b 100644 --- a/configure.ac +++ b/configure.ac @@ -62,6 +62,7 @@ PGAC_ARG_REQ(with, template, [NAME], [override operating system template], # --with-template not given case $host_os in + aix*) template=aix ;; cygwin*|msys*) template=cygwin ;; darwin*) template=darwin ;; dragonfly*) template=netbsd ;; diff --git a/src/Makefile.shlib b/src/Makefile.shlib index 3825af5b228..6ff8e0d7430 100644 --- a/src/Makefile.shlib +++ b/src/Makefile.shlib @@ -106,6 +106,33 @@ ifdef SO_MAJOR_VERSION override CPPFLAGS += -DSO_MAJOR_VERSION=$(SO_MAJOR_VERSION) endif +# On AIX, executables donot automatically expose their symbols to shared +# modules. Extensions therefore cannot call functions in the main Postgres +# binary unless those symbols are explicitly exported. Unlike other platforms, +# AIX executables are not default symbol providers each shared module must +# link against an export list that defines which symbols it can use. +# +# The mkldexport.sh script fixes AIXs symbol export issue by generating an +# explicit export list. It uses nm to gather all symbols from the Postgres +# object files, then writes them into the export file. When invoked with ".", +# it outputs #! ., which tells AIX the list applies to the main executable. +# This way, extension modules can link against that list and resolve their +# undefined symbols directly from the Postgres binary. +# +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) ifdef soname # linkable library @@ -254,6 +281,14 @@ $(stlib): $(OBJS) | $(SHLIB_PREREQS) touch $@ endif #haslibarule +# AIX wraps both shared libraries and static library, which can be used both +# for static and shared linking +ifeq ($(PORTNAME), aix) +$(stlib): $(shlib) + rm -f $(stlib) + $(AR) $(AROPT) $(stlib) $(shlib) +endif # aix + ifeq (,$(filter cygwin win32,$(PORTNAME))) # Normal case @@ -267,8 +302,11 @@ ifneq ($(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 # aix endif # shlib_bare endif # shlib_major @@ -376,6 +414,9 @@ install-lib-static: $(stlib) installdirs-lib install-lib-shared: $(shlib) installdirs-lib ifdef soname +# we don't install $(shlib) on AIX +# (see http://archives.postgresql.org/message-id/52EF20B2E3209443BC37736D00C3C1380A6E79FE@EXADV1.host.magwien.gv.at) +ifneq ($(PORTNAME), aix) $(INSTALL_SHLIB) $< '$(DESTDIR)$(libdir)/$(shlib)' ifneq ($(PORTNAME), cygwin) ifneq ($(PORTNAME), win32) @@ -391,6 +432,7 @@ ifneq ($(shlib), $(shlib_bare)) endif endif # not win32 endif # not cygwin +endif # not aix ifneq (,$(findstring $(PORTNAME),win32 cygwin)) $(INSTALL_SHLIB) $< '$(DESTDIR)$(bindir)/$(shlib)' endif diff --git a/src/backend/Makefile b/src/backend/Makefile index 05642dc02e3..cdaec66a9ed 100644 --- a/src/backend/Makefile +++ b/src/backend/Makefile @@ -85,12 +85,14 @@ all: submake-libpgport submake-catalog-headers submake-utils-headers postgres ifneq ($(PORTNAME), cygwin) ifneq ($(PORTNAME), win32) +ifneq ($(PORTNAME), aix) postgres: $(OBJS) $(CC) $(CFLAGS) $(call expand_subsys,$^) $(LDFLAGS) $(LIBS) -o $@ endif endif +endif ifeq ($(PORTNAME), cygwin) @@ -117,6 +119,26 @@ libpostgres.a: postgres endif # win32 +ifeq ($(PORTNAME), aix) + +postgres: $(POSTGRES_IMP) + $(CC) $(CFLAGS) $(call expand_subsys,$(OBJS)) $(LDFLAGS) -Wl,-bE:$(top_builddir)/src/backend/$(POSTGRES_IMP) $(LIBS) -Wl,-brtllib -o $@ + +# Linking to a single .o with -r is a lot faster than building a .a or passing +# all objects to MKLDEXPORT. +# +# It looks alluring to use $(CC) -r instead of ld -r, but that doesn't +# trivially work with gcc, due to gcc specific static libraries linked in with +# -r. +# AIX builds only 64Bit binaries. The linker builds 64bit either with -b64 flag +# or watch for OBJECT_MODE=64. +$(POSTGRES_IMP): $(OBJS) + ld -b64 -r -o SUBSYS.o $(call expand_subsys,$^) + $(MKLDEXPORT) SUBSYS.o . > $@ + @rm -f SUBSYS.o + +endif # aix + $(top_builddir)/src/port/libpgport_srv.a: | submake-libpgport @@ -210,8 +232,12 @@ install-postgres-bitcode: $(OBJS) all $(call install_llvm_module,postgres,$(call expand_subsys, $(filter-out $(top_builddir)/src/timezone/objfiles.txt, $(SUBDIROBJS)))) endif -install-bin: postgres installdirs +install-bin: postgres $(POSTGRES_IMP) installdirs $(INSTALL_PROGRAM) postgres$(X) '$(DESTDIR)$(bindir)/postgres$(X)' +ifeq ($(MAKE_EXPORTS), true) + $(INSTALL_DATA) $(POSTGRES_IMP) '$(DESTDIR)$(pkglibdir)/$(POSTGRES_IMP)' + $(INSTALL_PROGRAM) $(MKLDEXPORT) '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)/mkldexport.sh' +endif .PHONY: install-bin @@ -227,12 +253,20 @@ ifeq ($(MAKE_DLL), true) $(MKDIR_P) '$(DESTDIR)$(libdir)' endif endif +ifeq ($(MAKE_EXPORTS), true) + $(MKDIR_P) '$(DESTDIR)$(pkglibdir)' + $(MKDIR_P) '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)' +endif ########################################################################## uninstall: rm -f '$(DESTDIR)$(bindir)/postgres$(X)' +ifeq ($(MAKE_EXPORTS), true) + rm -f '$(DESTDIR)$(pkglibdir)/$(POSTGRES_IMP)' + rm -f '$(DESTDIR)$(pgxsdir)/$(MKLDEXPORT_DIR)/mkldexport.sh' +endif ifeq ($(PORTNAME), cygwin) ifeq ($(MAKE_DLL), true) rm -f '$(DESTDIR)$(libdir)/libpostgres.a' @@ -257,7 +291,7 @@ endif ########################################################################## clean: - rm -f $(LOCALOBJS) postgres$(X) + rm -f $(LOCALOBJS) postgres$(X) $(POSTGRES_IMP) ifeq ($(PORTNAME), cygwin) rm -f postgres.dll libpostgres.a endif diff --git a/src/backend/utils/misc/ps_status.c b/src/backend/utils/misc/ps_status.c index 9e55be244f7..51dce24947a 100644 --- a/src/backend/utils/misc/ps_status.c +++ b/src/backend/utils/misc/ps_status.c @@ -52,7 +52,7 @@ bool update_process_title = DEFAULT_UPDATE_PROCESS_TITLE; #define PS_USE_SETPROCTITLE_FAST #elif defined(HAVE_SETPROCTITLE) #define PS_USE_SETPROCTITLE -#elif defined(__linux__) || defined(__sun) || defined(__darwin__) || defined(__GNU__) +#elif defined(__linux__) || defined(_AIX) || defined(__sun) || defined(__darwin__) || defined(__GNU__) #define PS_USE_CLOBBER_ARGV #elif defined(WIN32) #define PS_USE_WIN32 @@ -62,7 +62,7 @@ bool update_process_title = DEFAULT_UPDATE_PROCESS_TITLE; /* Different systems want the buffer padded differently */ -#if defined(__linux__) || defined(__darwin__) || defined(__GNU__) +#if defined(_AIX) || defined(__linux__) || defined(__darwin__) || defined(__GNU__) #define PS_PADDING '\0' #else #define PS_PADDING ' ' diff --git a/src/include/port/aix.h b/src/include/port/aix.h index e69de29bb2d..c86983a4452 100644 --- a/src/include/port/aix.h +++ b/src/include/port/aix.h @@ -0,0 +1,3 @@ +/* + * src/include/port/aix.h + */ diff --git a/src/makefiles/Makefile.aix b/src/makefiles/Makefile.aix old mode 100755 new mode 100644 index 42bdbade5bb..921c22faaaa --- a/src/makefiles/Makefile.aix +++ b/src/makefiles/Makefile.aix @@ -1,19 +1,3 @@ -# -blibpath: -# The path to be inserted into the default path (Index 0 path) field of the -# loader section. When this flag is presented, the -L paths will not be stored. -# AIX uses a stricter, more explicit approach. The runtime linker expects to -# tell it exactly where to look using -blibpath. -# -blibpath must contain ALL directories where we should look for libraries -libpath := $(shell echo $(subst -L,:,$(filter -L/%,$(LDFLAGS))) | sed -e's/ //g'):/usr/lib:/lib - -# when building with gcc, need to make sure that libgcc can be found -ifeq ($(GCC), yes) -libpath += :$(libpath):$(dir $(shell gcc -print-libgcc-file-name)) -endif - -# AIX uses a stricter, more explicit approach. The runtime linker expects -# to tell it exactly where to look using -blibpath. -rpath = -Wl,-blibpath:'$(rpathdir)$(libpath)' # gcc needs to know it's building a shared lib, otherwise it'll not emit # correct code / link to the right support libraries diff --git a/src/template/aix b/src/template/aix new file mode 100644 index 00000000000..ea66dd83740 --- /dev/null +++ b/src/template/aix @@ -0,0 +1,18 @@ +# This file is referred for specific flags wrt to AIX build process like +# cflags. +# src/template/aix + +# Extra CFLAGS for code that will go into a shared library +CFLAGS_SL=" " + +if test "$GCC" = yes; then + # Only 64bit compilation is supported in AIX. This requires -maix64 + # to be passed as the default build environment in AIX is 32bit. + CFLAGS="$CFLAGS -maix64 " + CPPFLAGS="$CPPFLAGS -maix64 " + CXXFLAGS="$CXXFLAGS -maix64 " + + # For large binaries/libraries, there will be TOC overflows in AIX. To + # avoid this, pass -bbigtoc linker option to enlarge TOC access range. + LDFLAGS="$LDFLAGS -maix64 -Wl,-bbigtoc" +fi -- 2.41.0