configure: Expand -fvisibility checks to more compilers, test for -qvisibility
It looks like icc and sunpro both support -fvisibility=hidden and xlc supports
-qvisibility=hidden. I tested this on AIX and solaris with their proprietary
compilers as well as gcc, and with gcc or clang on freebsd, linux, macos,
netbsd and openbsd.
Apparently my prior commit fe6a64a58ab only works in combination with this
patch. While I tried to test them separately, an unknown caching issue
prevented me from noticing the problem.
Per discussion with Tom Lane and buildfarm member hoverfly.
Discussion: https://postgr.es/m/20220910052741.t7w7csyrggwus2ze%40awork3.anarazel.de
Discussion: https://postgr.es/m/20220820174213.d574qde4ptwdzoqz@awork3.anarazel.de
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/be7c15b194ab91d28904a0e656f3f6600883ab68
Modified Files
--------------
configure | 400 +++++++++++++++++++++++++++++++++++++----------------------
configure.ac | 39 ++++--
2 files changed, 280 insertions(+), 159 deletions(-)