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Stop using "-multiply_defined suppress" on macOS.

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We started to use this linker switch in commit 9df308697 of
2004-07-13, which was in the OS X 10.3 era.  Apparently it's been a
no-op since around OS X 10.9.  Apple's most recent toolchain version
actively complains about it, so it's time to get rid of it.

Discussion: https://postgr.es/m/467042.1695766998@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2023-09-26 21:06:21 -04:00
parent 5f567b3c35
commit 3aa021b29b
1 changed files with 2 additions and 2 deletions
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4
src/Makefile.shlib
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@ -126,12 +126,12 @@ ifeq ($(PORTNAME), darwin)
ifneq ($(SO_MAJOR_VERSION), 0)
version_link = -compatibility_version $(SO_MAJOR_VERSION) -current_version $(SO_MAJOR_VERSION).$(SO_MINOR_VERSION)
endif
LINK.shared = $(COMPILER) -dynamiclib -install_name '$(libdir)/lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)' $(version_link) $(exported_symbols_list) -multiply_defined suppress
LINK.shared = $(COMPILER) -dynamiclib -install_name '$(libdir)/lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)' $(version_link) $(exported_symbols_list)
shlib = lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)
shlib_major = lib$(NAME).$(SO_MAJOR_VERSION)$(DLSUFFIX)
else
# loadable module
LINK.shared = $(COMPILER) -bundle -multiply_defined suppress
LINK.shared = $(COMPILER) -bundle
endif
BUILD.exports = $(AWK) '/^[^\#]/ {printf "_%s\n",$$1}' $< >$@
exports_file = $(SHLIB_EXPORTS:%.txt=%.list)