timegm: Assume declaration if function exists.

[pspp] / m4 / timegm.m4

diff --git a/m4/timegm.m4 b/m4/timegm.m4
index be323c9b0f287be0ceee17d62deab328600d52a1..010a6f20a61dc9e266814785ea3c9841b2c4526e 100644 (file)
--- a/m4/timegm.m4
+++ b/m4/timegm.m4
@@ -1,5 +1,5 @@
-# timegm.m4 serial 6
-dnl Copyright (C) 2003, 2007, 2009 Free Software Foundation, Inc.
+# timegm.m4 serial 7
+dnl Copyright (C) 2003, 2007, 2009, 2010 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.
@@ -8,18 +8,18 @@ AC_DEFUN([gl_FUNC_TIMEGM],
 [
   AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
   AC_REQUIRE([gl_FUNC_MKTIME])
+  REPLACE_TIMEGM=0
   if test $ac_cv_func_working_mktime = no; then
     # Assume that timegm is buggy if mktime is.
-    AC_LIBOBJ([timegm])
-    ac_cv_func_timegm=no
+    REPLACE_TIMEGM=1
   else
-    AC_REPLACE_FUNCS([timegm])
-  fi
-  REPLACE_TIMEGM=1
-  if test $ac_cv_func_timegm = yes; then
-    AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>])
+    AC_CHECK_FUNCS([timegm])
+    if test $ac_cv_func_timegm != yes; then
+      REPLACE_TIMEGM=1
+    fi
   fi
   if test $REPLACE_TIMEGM = 1; then
+    AC_LIBOBJ([timegm])
     gl_PREREQ_TIMEGM
   fi
 ])
@@ -34,7 +34,7 @@ AC_DEFUN([gl_PREREQ_TIMEGM], [
        # so we need to substitute our own mktime implementation.
        AC_LIBOBJ([mktime])
        AC_DEFINE([mktime], [rpl_mktime],
-        [Define to rpl_mktime if the replacement function should be used.])
+         [Define to rpl_mktime if the replacement function should be used.])
        gl_PREREQ_MKTIME])
   fi
 ])