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-rw-r--r--gl/m4/timegm.m440
1 files changed, 40 insertions, 0 deletions
diff --git a/gl/m4/timegm.m4 b/gl/m4/timegm.m4
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1# timegm.m4 serial 6
2dnl Copyright (C) 2003, 2007, 2009 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_TIMEGM],
8[
9 AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
10 AC_REQUIRE([gl_FUNC_MKTIME])
11 if test $ac_cv_func_working_mktime = no; then
12 # Assume that timegm is buggy if mktime is.
13 AC_LIBOBJ([timegm])
14 ac_cv_func_timegm=no
15 else
16 AC_REPLACE_FUNCS([timegm])
17 fi
18 REPLACE_TIMEGM=1
19 if test $ac_cv_func_timegm = yes; then
20 AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>])
21 fi
22 if test $REPLACE_TIMEGM = 1; then
23 gl_PREREQ_TIMEGM
24 fi
25])
26
27# Prerequisites of lib/timegm.c.
28AC_DEFUN([gl_PREREQ_TIMEGM], [
29 AC_REQUIRE([gl_TIME_R])
30 AC_REQUIRE([gl_FUNC_MKTIME])
31 if test $ac_cv_func_working_mktime = yes; then
32 AC_CHECK_FUNC([__mktime_internal], ,
33 [# mktime works but it doesn't export __mktime_internal,
34 # so we need to substitute our own mktime implementation.
35 AC_LIBOBJ([mktime])
36 AC_DEFINE([mktime], [rpl_mktime],
37 [Define to rpl_mktime if the replacement function should be used.])
38 gl_PREREQ_MKTIME])
39 fi
40])