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# serial 9
# Copyright (C) 1998-1999, 2001, 2003-2004, 2006, 2009 Free Software
# Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
dnl Shamelessly cloned from acspecific.m4's AC_FUNC_UTIME_NULL,
dnl then do case-insensitive s/utime/utimes/.
AC_DEFUN([gl_FUNC_UTIMES_NULL],
[AC_CACHE_CHECK([whether utimes accepts a null argument], [ac_cv_func_utimes_null],
[rm -f conftest.data; > conftest.data
AC_RUN_IFELSE([AC_LANG_SOURCE([[
/* In case stat has been defined to rpl_stat, undef it here. */
#undef stat
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
int
main () {
struct stat s, t;
return ! (stat ("conftest.data", &s) == 0
&& utimes ("conftest.data", 0) == 0
&& stat ("conftest.data", &t) == 0
&& t.st_mtime >= s.st_mtime
&& t.st_mtime - s.st_mtime < 120));
}]])],
[ac_cv_func_utimes_null=yes],
[ac_cv_func_utimes_null=no],
[ac_cv_func_utimes_null=no])
rm -f core core.* *.core])
if test $ac_cv_func_utimes_null = yes; then
AC_DEFINE([HAVE_UTIMES_NULL], [1],
[Define if utimes accepts a null argument])
fi
]
)
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