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e9a3c047a5
On some platforms, -fpic fails for sufficiently large shared libraries. We've mostly not hit that boundary yet, but there are some extensions such as Citus and pglogical where it's becoming a problem. A bit of research suggests that the penalty for -fPIC is small, in the single-digit-percentage range --- and there's none at all on popular platforms such as x86_64. So let's just default to -fPIC everywhere and provide one less thing for extension developers to worry about. Per complaint from Christoph Berg. Back-patch to all supported branches. (I did not bother to touch the recently-removed Makefiles for sco and unixware in the back branches, though. We'd have no way to test that it doesn't break anything on those platforms.) Discussion: https://postgr.es/m/20170529155850.qojdfrwkkqnjb3ap@msg.df7cb.de
26 lines
476 B
Makefile
26 lines
476 B
Makefile
AROPT = cr
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ifdef ELF_SYSTEM
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export_dynamic = -Wl,-E
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rpath = -Wl,-R'$(rpathdir)'
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endif
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DLSUFFIX = .so
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CFLAGS_SL = -fPIC -DPIC
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# Rule for building a shared library from a single .o file
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%.so: %.o
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ifdef ELF_SYSTEM
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$(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_SL) -shared -o $@ $<
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else
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$(LD) $(LDREL) $(LDOUT) $<.obj -x $<
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@echo building shared object $@
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@rm -f $@.pic
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@${AR} cq $@.pic $<.obj
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${RANLIB} $@.pic
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@rm -f $@
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$(LD) -x -Bshareable -Bforcearchive -o $@ $@.pic
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endif
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