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configure

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    • Tom Lane's avatar
      4e19bd41
      Use CFLAGS_SL while probing linkability of libperl. · 4e19bd41
      Tom Lane authored 
      On recent Red Hat platforms (at least RHEL 8 and Fedora 30, maybe older),
configure's probe for libperl failed if the user forces CFLAGS to be -O0.
This is because some code in perl's inline.h fails to be optimized away
at -O0, and said code doesn't work if compiled without -fPIC.

To fix, add CFLAGS_SL to the compile flags used during the libperl probe.
This is a better simulation of the way that plperl is built, anyway,
so it might forestall other issues in future.

Per gripe from Kyotaro Horiguchi.  Back-patch to all supported branches,
since people might want to build older branches on these platforms.

Discussion: https://postgr.es/m/20191010.144533.263180400.horikyota.ntt@gmail.com
      4e19bd41
      History
      Use CFLAGS_SL while probing linkability of libperl.
      Tom Lane authored 
      On recent Red Hat platforms (at least RHEL 8 and Fedora 30, maybe older),
configure's probe for libperl failed if the user forces CFLAGS to be -O0.
This is because some code in perl's inline.h fails to be optimized away
at -O0, and said code doesn't work if compiled without -fPIC.

To fix, add CFLAGS_SL to the compile flags used during the libperl probe.
This is a better simulation of the way that plperl is built, anyway,
so it might forestall other issues in future.

Per gripe from Kyotaro Horiguchi.  Back-patch to all supported branches,
since people might want to build older branches on these platforms.

Discussion: https://postgr.es/m/20191010.144533.263180400.horikyota.ntt@gmail.com