X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Ftimegm.m4;h=01a244bcd23353c2333849fda38de0eb8eb11e76;hb=c9ff025783e5374226ffbf7940f40ce7db6852ed;hp=ca903b1afce2b9b75c293836af794489e85208e4;hpb=c7857d5835743de62405964797a38f6e1adfb3b1;p=gnulib.git

diff --git a/m4/timegm.m4 b/m4/timegm.m4
index ca903b1af..01a244bcd 100644
--- a/m4/timegm.m4
+++ b/m4/timegm.m4
@@ -1,5 +1,5 @@
-# timegm.m4 serial 5
-dnl Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+# timegm.m4 serial 8
+dnl Copyright (C) 2003, 2007, 2009-2011 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])
-  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
-  else
-    AC_REPLACE_FUNCS(timegm)
-  fi
-  REPLACE_TIMEGM=1
+  REPLACE_TIMEGM=0
+  AC_CHECK_FUNCS_ONCE([timegm])
   if test $ac_cv_func_timegm = yes; then
-    AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>])
+    if test $ac_cv_func_working_mktime = no; then
+      # Assume that timegm is buggy if mktime is.
+      REPLACE_TIMEGM=1
+    fi
+  else
+    HAVE_TIMEGM=0
   fi
-  if test $REPLACE_TIMEGM = 1; then
+  if test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1; then
+    AC_LIBOBJ([timegm])
     gl_PREREQ_TIMEGM
   fi
 ])
@@ -29,12 +29,12 @@ AC_DEFUN([gl_PREREQ_TIMEGM], [
   AC_REQUIRE([gl_TIME_R])
   AC_REQUIRE([gl_FUNC_MKTIME])
   if test $ac_cv_func_working_mktime = yes; then
-    AC_CHECK_FUNC(__mktime_internal, ,
+    AC_CHECK_FUNC([__mktime_internal], ,
       [# mktime works but it doesn't export __mktime_internal,
        # 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
 ])