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Remove dead handling for pre-POSIX sigwait().

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sigwait() is in SUSv2 and all targeted Unix systems have it.  An earlier
pre-standard function prototype existed on some older systems, but we
no longer need a workaround for that.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Greg Stark <stark@mit.edu>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/CA+hUKGJ3LHeP9w5Fgzdr4G8AnEtJ=z=p6hGDEm4qYGEUX5B6fQ@mail.gmail.com
This commit is contained in:
Thomas Munro
2022-07-24 09:32:34 +12:00
parent 86e5eb4f58
commit fb12becdfb
6 changed files with 10 additions and 104 deletions
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64
configure vendored
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@ -16394,11 +16394,9 @@ $as_echo "#define HAVE_FSEEKO 1" >>confdefs.h
fi
# Make sure there's a declaration for sigwait(), then make sure
# that it conforms to the POSIX standard (there seem to still be
# some platforms out there with pre-POSIX sigwait()). On Solaris,
# _POSIX_PTHREAD_SEMANTICS affects the result, but we already
# added that to CPPFLAGS.
# posix_fadvise() is a no-op on Solaris, so don't incur function overhead
# by calling it, 2009-04-02
# http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
# The Clang compiler raises a warning for an undeclared identifier that matches
# a compiler builtin function. All extant Clang versions are affected, as of
# Clang 3.6.0. Test a builtin known to every version. This problem affects the
@ -16487,62 +16485,6 @@ case $ac_cv_c_decl_report in
*) ac_c_decl_warn_flag= ;;
esac
ac_fn_c_check_decl "$LINENO" "sigwait" "ac_cv_have_decl_sigwait" "#include <signal.h>
"
if test "x$ac_cv_have_decl_sigwait" = xyes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_SIGWAIT $ac_have_decl
_ACEOF
if test "x$ac_cv_have_decl_sigwait" = xyes; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for POSIX-conforming sigwait declaration" >&5
$as_echo_n "checking for POSIX-conforming sigwait declaration... " >&6; }
if ${pgac_cv_have_posix_decl_sigwait+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <signal.h>
int sigwait(const sigset_t *set, int *sig);
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
pgac_cv_have_posix_decl_sigwait=yes
else
pgac_cv_have_posix_decl_sigwait=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_have_posix_decl_sigwait" >&5
$as_echo "$pgac_cv_have_posix_decl_sigwait" >&6; }
fi
if test "x$pgac_cv_have_posix_decl_sigwait" = xyes; then
$as_echo "#define HAVE_POSIX_DECL_SIGWAIT 1" >>confdefs.h
else
# On non-Windows, libpq requires POSIX sigwait() for thread safety.
if test "$enable_thread_safety" = yes -a "$PORTNAME" != "win32"; then
as_fn_error $? "POSIX-conforming sigwait is required to enable thread safety." "$LINENO" 5
fi
fi
# posix_fadvise() is a no-op on Solaris, so don't incur function overhead
# by calling it, 2009-04-02
# http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
if test "$PORTNAME" != "solaris"; then :
for ac_func in posix_fadvise