Mercurial > gnulib
view m4/time_rz.m4 @ 40198:5a34193cbc07
long-options: add parse_gnu_standard_options_only
Discussed in https://bugs.gnu.org/33468 .
* lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead
of 0.
(parse_gnu_standard_options_only): Add function to
process the GNU default options --help and --version and fail for any other
unknown long or short option. See
https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html .
* lib/long-options.h (parse_gnu_standard_options_only): Declare it.
* modules/long-options (depends-on): Add stdbool, exitfail.
* top/maint.mk (sc_prohibit_long_options_without_use): Update
syntax-check rule, add new function name.
author | Bernhard Voelker <mail@bernhard-voelker.de> |
---|---|
date | Thu, 29 Nov 2018 09:06:26 +0100 |
parents | b06060465f09 |
children |
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dnl Time zone functions: tzalloc, localtime_rz, etc. dnl Copyright (C) 2015-2019 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. dnl Written by Paul Eggert. AC_DEFUN([gl_TIME_RZ], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) AC_REQUIRE([AC_STRUCT_TIMEZONE]) # Mac OS X 10.6 loops forever with some time_t values. # See Bug#27706, Bug#27736, and # https://lists.gnu.org/r/bug-gnulib/2017-07/msg00142.html AC_CACHE_CHECK([whether localtime loops forever near extrema], [gl_cv_func_localtime_infloop_bug], [gl_cv_func_localtime_infloop_bug=no AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <stdlib.h> #include <string.h> #include <unistd.h> #include <time.h> ]], [[ time_t t = -67768038400666600; struct tm *tm; char *tz = getenv ("TZ"); if (! (tz && strcmp (tz, "QQQ0") == 0)) return 0; alarm (2); tm = localtime (&t); /* Use TM and *TM to suppress over-optimization. */ return tm && tm->tm_isdst; ]])], [(TZ=QQQ0 ./conftest$EXEEXT) >/dev/null 2>&1 || gl_cv_func_localtime_infloop_bug=yes], [], [gl_cv_func_localtime_infloop_bug="guessing no"])]) if test "$gl_cv_func_localtime_infloop_bug" = yes; then AC_DEFINE([HAVE_LOCALTIME_INFLOOP_BUG], 1, [Define if localtime-like functions can loop forever on extreme arguments.]) fi AC_CHECK_TYPES([timezone_t], [], [], [[#include <time.h>]]) if test "$ac_cv_type_timezone_t" = yes; then HAVE_TIMEZONE_T=1 fi ])