2 dnl Copyright (C) 2003, 2007, 2009-2018 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_TIMEGM],
9 AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
10 AC_REQUIRE([gl_FUNC_MKTIME_WORKS])
12 AC_CHECK_FUNCS_ONCE([timegm])
13 if test $ac_cv_func_timegm = yes; then
14 if test "$gl_cv_func_working_mktime" != yes; then
15 # Assume that timegm is buggy if mktime is.
23 # Prerequisites of lib/timegm.c.
24 AC_DEFUN([gl_PREREQ_TIMEGM], [