X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgettimeofday.m4;h=2fdc531cb5998557aa215ac0355243274b319a8f;hb=523067dbfb281d3cc27f65007a3893bd694c257d;hp=19ed0bfa6bdc8dd1dc0692855bdb2d0ac1d719ac;hpb=6c0454107827a0761e2a33017db19a6fda699379;p=gnulib.git

diff --git a/m4/gettimeofday.m4 b/m4/gettimeofday.m4
index 19ed0bfa6..2fdc531cb 100644
--- a/m4/gettimeofday.m4
+++ b/m4/gettimeofday.m4
@@ -1,10 +1,15 @@
-#serial 2
+#serial 7
+
+# Copyright (C) 2001, 2002, 2003, 2005 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 From Jim Meyering.
 dnl
 dnl See if gettimeofday clobbers the static buffer that localtime uses
-dnl for it's return value.  The gettimeofday function from Mac OS X 10.0.4,
-dnl i.e. Darwin 1.3.7 has this problem.
+dnl for its return value.  The gettimeofday function from Mac OS X 10.0.4
+dnl (i.e., Darwin 1.3.7) has this problem.
 dnl
 dnl If it does, then arrange to use gettimeofday and localtime only via
 dnl the wrapper functions that work around the problem.
@@ -12,14 +17,11 @@ dnl the wrapper functions that work around the problem.
 AC_DEFUN([AC_FUNC_GETTIMEOFDAY_CLOBBER],
 [
  AC_REQUIRE([AC_HEADER_TIME])
- AC_CHECK_HEADERS(string.h stdlib.h)
  AC_CACHE_CHECK([whether gettimeofday clobbers localtime buffer],
   jm_cv_func_gettimeofday_clobber,
   [AC_TRY_RUN([
 #include <stdio.h>
-#if HAVE_STRING_H
-# include <string.h>
-#endif
+#include <string.h>
 
 #if TIME_WITH_SYS_TIME
 # include <sys/time.h>
@@ -32,9 +34,7 @@ AC_DEFUN([AC_FUNC_GETTIMEOFDAY_CLOBBER],
 # endif
 #endif
 
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
+#include <stdlib.h>
 
 int
 main ()
@@ -58,12 +58,23 @@ main ()
 	 jm_cv_func_gettimeofday_clobber=yes)
   ])
   if test $jm_cv_func_gettimeofday_clobber = yes; then
-    AC_LIBOBJ(gettimeofday)
-    AC_DEFINE(localtime, rpl_localtime,
-      [Define to rpl_localtime if the replacement function should be used.])
+    gl_GETTIMEOFDAY_REPLACE_LOCALTIME
+
     AC_DEFINE(gettimeofday, rpl_gettimeofday,
       [Define to rpl_gettimeofday if the replacement function should be used.])
-    AC_DEFINE(GETTIMEOFDAY_CLOBBERS_LOCALTIME_BUFFER, 1,
-      [Define if gettimeofday clobbers localtime's static buffer.])
+    gl_PREREQ_GETTIMEOFDAY
   fi
 ])
+
+AC_DEFUN([gl_GETTIMEOFDAY_REPLACE_LOCALTIME], [
+  AC_LIBOBJ(gettimeofday)
+  AC_DEFINE(gmtime, rpl_gmtime,
+    [Define to rpl_gmtime if the replacement function should be used.])
+  AC_DEFINE(localtime, rpl_localtime,
+    [Define to rpl_localtime if the replacement function should be used.])
+])
+
+# Prerequisites of lib/gettimeofday.c.
+AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [
+  AC_REQUIRE([AC_HEADER_TIME])
+])