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Add configure-time check whether sig_atomic_t is defined; if not,

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provide a default definition equating it to 'int'.  Should trigger only
on machines with pre-ANSI-C header files, eg SunOS 4.1.x.
This commit is contained in:
Tom Lane
2001-12-03 17:44:52 +00:00
parent 4ea2b8f556
commit 18ab41eeef
4 changed files with 79 additions and 30 deletions
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5
configure.in
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@@ -1171,10 +1171,12 @@ AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignme
# Some platforms predefine the types int8, int16, etc. Only check
# a (hopefully) representative subset.
# a (hopefully) representative subset. We also check for sig_atomic_t,
# which *should* be defined per ANSI C, but is missing on some old platforms.
pgac_type_includes="\
#include <stdio.h>
#include <signal.h>
#ifdef HAVE_SUPPORTDEFS_H
#include <SupportDefs.h>
#endif"
@@ -1183,6 +1185,7 @@ PGAC_CHECK_TYPE(int8, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(uint8, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(int64, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(uint64, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(sig_atomic_t, [], [], [$pgac_type_includes])
PGAC_FUNC_POSIX_SIGNALS