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Add memcmp() test and new memcmp.c file, for SunOS. Tested by Tatsuo.

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This commit is contained in:
Bruce Momjian
2001-12-20 21:23:05 +00:00
parent 960f6a5fdf
commit 8799d84603
6 changed files with 265 additions and 158 deletions
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26
config/c-library.m4
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@ -1,5 +1,5 @@
# Macros that test various C library quirks
# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.9 2001/09/07 19:52:53 momjian Exp $
# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.10 2001/12/20 21:23:05 momjian Exp $
# PGAC_VAR_INT_TIMEZONE
@ -36,6 +36,30 @@ if test x"$pgac_cv_func_gettimeofday_1arg" = xyes ; then
fi])# PGAC_FUNC_GETTIMEOFDAY_1ARG
# PGAC_FUNC_MEMCMP
# -----------
# Check if memcmp() properly handles negative bytes and returns +/-.
# SunOS does not.
# AC_FUNC_MEMCMP
AC_DEFUN(PGAC_FUNC_MEMCMP,
[AC_CACHE_CHECK(for 8-bit clean memcmp, pgac_cv_func_memcmp_clean,
[AC_TRY_RUN([
main()
{
char c0 = 0x40, c1 = 0x80, c2 = 0x81;
exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
}
], pgac_cv_func_memcmp_clean=yes, pgac_cv_func_memcmp_clean=no,
pgac_cv_func_memcmp_clean=no)])
if test $pgac_cv_func_memcmp_clean = no ; then
MEMCMP=memcmp.o
else
MEMCMP=
fi
AC_SUBST(MEMCMP)dnl
])
# PGAC_UNION_SEMUN
# ----------------
# Check if `union semun' exists. Define HAVE_UNION_SEMUN if so.