-# timegm.m4 serial 7
-dnl Copyright (C) 2003, 2007, 2009, 2010 Free Software Foundation, Inc.
+# timegm.m4 serial 11
+dnl Copyright (C) 2003, 2007, 2009-2013 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_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
AC_REQUIRE([gl_FUNC_MKTIME])
REPLACE_TIMEGM=0
- if test $ac_cv_func_working_mktime = no; then
- # Assume that timegm is buggy if mktime is.
- REPLACE_TIMEGM=1
- else
- AC_CHECK_FUNCS([timegm])
- if test $ac_cv_func_timegm != yes; then
+ AC_CHECK_FUNCS_ONCE([timegm])
+ if test $ac_cv_func_timegm = yes; then
+ if test $gl_cv_func_working_mktime = no; then
+ # Assume that timegm is buggy if mktime is.
REPLACE_TIMEGM=1
fi
- fi
- if test $REPLACE_TIMEGM = 1; then
- AC_LIBOBJ([timegm])
- gl_PREREQ_TIMEGM
+ else
+ HAVE_TIMEGM=0
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
+ :
])