Use CFLAGS_SL while probing linkability of libperl. 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/[email protected] Branch ------ REL9_4_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/6d2b18d0701ba5637a149467478a4c68af0a0a43 Modified Files -------------- configure | 5 +++++ configure.in | 5 +++++ 2 files changed, 10 insertions(+)
