* lib/stat-time.h: (get_stat_birthtime): Check for zero-valued

[gnulib.git] / m4 / timegm.m4

diff --git a/m4/timegm.m4 b/m4/timegm.m4
index 94305ae..ca903b1 100644 (file)
--- a/m4/timegm.m4
+++ b/m4/timegm.m4
@@ -1,13 +1,12 @@
-# timegm.m4 serial 2
-dnl Copyright (C) 2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# timegm.m4 serial 5
+dnl Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_TIMEGM],
 [
+  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
   AC_REQUIRE([gl_FUNC_MKTIME])
   if test $ac_cv_func_working_mktime = no; then
     # Assume that timegm is buggy if mktime is.
@@ -16,11 +15,13 @@ AC_DEFUN([gl_FUNC_TIMEGM],
   else
     AC_REPLACE_FUNCS(timegm)
   fi
-  if test $ac_cv_func_timegm = no; then
+  REPLACE_TIMEGM=1
+  if test $ac_cv_func_timegm = yes; then
+    AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>])
+  fi
+  if test $REPLACE_TIMEGM = 1; then
     gl_PREREQ_TIMEGM
   fi
-
-  AC_CHECK_DECLS([timegm], , , [#include <time.h>])
 ])
 
 # Prerequisites of lib/timegm.c.