2 dnl Copyright (C) 2003 Free Software Foundation, Inc.
3 dnl This file is free software, distributed under the terms of the GNU
4 dnl General Public License. As a special exception to the GNU General
5 dnl Public License, this file may be distributed as part of a program
6 dnl that contains a configuration script generated by Autoconf, under
7 dnl the same distribution terms as the rest of that program.
9 AC_DEFUN([gl_FUNC_TIMEGM],
11 AC_REQUIRE([gl_FUNC_MKTIME])
12 if test $ac_cv_func_working_mktime = no; then
13 # Assume that timegm is buggy if mktime is.
17 AC_REPLACE_FUNCS(timegm)
19 if test $ac_cv_func_timegm = no; then
23 AC_CHECK_DECLS([timegm], , , [#include <time.h>])
26 # Prerequisites of lib/timegm.c.
27 AC_DEFUN([gl_PREREQ_TIMEGM], [
28 AC_REQUIRE([gl_TIME_R])
29 AC_REQUIRE([gl_FUNC_MKTIME])
30 if test $ac_cv_func_working_mktime = yes; then
31 AC_CHECK_FUNC(__mktime_internal, ,
32 [# mktime works but it doesn't export __mktime_internal,
33 # so we need to substitute our own mktime implementation.
35 AC_DEFINE([mktime], [rpl_mktime],
36 [Define to rpl_mktime if the replacement function should be used.])