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# timegm.m4 serial 4
dnl Copyright (C) 2003, 2007 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.
AC_DEFUN([gl_FUNC_TIMEGM],
[
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
if test $ac_cv_func_timegm = yes; then
AC_CHECK_DECLS([timegm], [REPLACE_TIMEGM=0], [], [#include <time.h>])
fi
if test $REPLACE_TIMEGM = 1; then
gl_PREREQ_TIMEGM
fi
])
# Prerequisites of lib/timegm.c.
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, ,
[# 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.])
gl_PREREQ_MKTIME])
fi
])
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