-# timegm.m4 serial 3
-dnl Copyright (C) 2003 Free Software Foundation, Inc.
+# timegm.m4 serial 8
+dnl Copyright (C) 2003, 2007, 2009, 2010 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_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
+ REPLACE_TIMEGM=0
+ AC_CHECK_FUNCS_ONCE([timegm])
+ if test $ac_cv_func_timegm = yes; then
+ if test $ac_cv_func_working_mktime = no; then
+ # Assume that timegm is buggy if mktime is.
+ REPLACE_TIMEGM=1
+ fi
else
- AC_REPLACE_FUNCS(timegm)
+ HAVE_TIMEGM=0
fi
- if test $ac_cv_func_timegm = no; then
+ if test $HAVE_TIMEGM = 0 || test $REPLACE_TIMEGM = 1; then
+ AC_LIBOBJ([timegm])
gl_PREREQ_TIMEGM
fi
-
- AC_CHECK_DECLS([timegm], , , [#include <time.h>])
])
# Prerequisites of lib/timegm.c.
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
])