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emacs/m4/timegm.m4
Paul Eggert b6aa3446df Merge from gnulib
This incorporates:
2017-04-30 strftime-fixes: New module
2017-04-30 mktime: Work around TZ problem on native Windows
2017-04-30 ctime, localtime: New modules
2017-04-30 gettimeofday: Provide higher resolution on native Windows
2017-04-29 utime-h: Modernize handling of 'struct utimbuf'
2017-04-29 Make use of module 'utime-h'
2017-04-30 Fix a few typos
* admin/merge-gnulib (AVOIDED_MODULES): Avoid utime-h, too.
* lib/gettimeofday.c, lib/mktime.c, lib/time.in.h, lib/utimens.c:
* m4/gettimeofday.m4, m4/include_next.m4, m4/mktime.m4:
* m4/strftime.m4, m4/time_h.m4, m4/timegm.m4, m4/utimens.m4:
Copy from gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
2017-04-30 14:53:17 -07:00

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# timegm.m4 serial 12
dnl Copyright (C) 2003, 2007, 2009-2017 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_WORKS])
REPLACE_TIMEGM=0
AC_CHECK_FUNCS_ONCE([timegm])
if test $ac_cv_func_timegm = yes; then
if test "$gl_cv_func_working_mktime" != yes; then
# Assume that timegm is buggy if mktime is.
REPLACE_TIMEGM=1
fi
else
HAVE_TIMEGM=0
fi
])
# Prerequisites of lib/timegm.c.
AC_DEFUN([gl_PREREQ_TIMEGM], [
:
])