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Commitd08a049

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aix: xlc: Use -Wl,-b,expfull for old compiler versions
Unfortunately xlc 12.1 and earlier don't support -qvisibility. Thereforebe7c15b doesn't suffice to make extension libraries work without theexplicit mkldexport step removed infe6a64a. While 12.1 is EOL, there issome desire to leave buildfarm animals using it run a bit longer. But insteadof adding back the complicated mkldexport step, we can use -Wl,-b,expfull toforce all symbols to be exported.Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us>Discussion:https://postgr.es/m/2490844.1663123546@sss.pgh.pa.us
1 parenteacbe94 commitd08a049

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‎configure

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@@ -7101,6 +7101,11 @@ if test x"$pgac_cv_prog_CXX_cxxflags__qvisibility_hidden" = x"yes"; then
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fi
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have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
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# Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
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# all extension module symbols to be exported.
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if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
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CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
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fi
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fi
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if test "$have_visibility_attribute" = "yes"; then

‎configure.ac

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@@ -592,6 +592,11 @@ elif test "$PORTNAME" = "aix"; then
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PGAC_PROG_CC_VAR_OPT(CFLAGS_SL_MODULE,[-qvisibility=hidden])
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PGAC_PROG_VARCXX_VARFLAGS_OPT(CXX, CXXFLAGS_SL_MODULE,[-qvisibility=hidden])
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have_visibility_attribute=$pgac_cv_prog_CC_cflags__qvisibility_hidden
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# Old xlc versions (<13.1) don't have support for -qvisibility. Use expfull to force
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# all extension module symbols to be exported.
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if test "$pgac_cv_prog_CC_cflags__qvisibility_hidden" != "yes"; then
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CFLAGS_SL_MODULE="$CFLAGS_SL_MODULE -Wl,-b,expfull"
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fi
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fi
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if test "$have_visibility_attribute" = "yes"; then

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