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authorRincewindsHat <12514511+RincewindsHat@users.noreply.github.com>2023-01-31 13:46:01 (GMT)
committerRincewindsHat <12514511+RincewindsHat@users.noreply.github.com>2023-01-31 13:46:01 (GMT)
commite8bd88d1fcded01ccd066572eeaae1b507989cb3 (patch)
treec8e7be6c07c6f635f6e803e6a6ba9e7a95fee7c0 /gl/m4/mktime.m4
parent2ad962c13473607ca0d974bfaa516a0ed53ec73d (diff)
downloadmonitoring-plugins-e8bd88d1fcded01ccd066572eeaae1b507989cb3.tar.gz
Sync with the latest Gnulib code 668c0b8ffa
Diffstat (limited to 'gl/m4/mktime.m4')
-rw-r--r--gl/m4/mktime.m4142
1 files changed, 104 insertions, 38 deletions
diff --git a/gl/m4/mktime.m4 b/gl/m4/mktime.m4
index faefb77..e9d31f3 100644
--- a/gl/m4/mktime.m4
+++ b/gl/m4/mktime.m4
@@ -1,5 +1,5 @@
1# serial 25 1# serial 37
2dnl Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software Foundation, 2dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
3dnl Inc. 3dnl Inc.
4dnl This file is free software; the Free Software Foundation 4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it, 5dnl gives unlimited permission to copy and/or distribute it,
@@ -7,24 +7,40 @@ dnl with or without modifications, as long as this notice is preserved.
7 7
8dnl From Jim Meyering. 8dnl From Jim Meyering.
9 9
10AC_DEFUN([gl_FUNC_MKTIME], 10AC_DEFUN([gl_TIME_T_IS_SIGNED],
11[
12 AC_CACHE_CHECK([whether time_t is signed],
13 [gl_cv_time_t_is_signed],
14 [AC_COMPILE_IFELSE(
15 [AC_LANG_PROGRAM([[#include <time.h>
16 char time_t_signed[(time_t) -1 < 0 ? 1 : -1];]])],
17 [gl_cv_time_t_is_signed=yes],
18 [gl_cv_time_t_is_signed=no])])
19 if test $gl_cv_time_t_is_signed = yes; then
20 AC_DEFINE([TIME_T_IS_SIGNED], [1], [Define to 1 if time_t is signed.])
21 fi
22])
23
24dnl Test whether mktime works. Set gl_cv_func_working_mktime.
25AC_DEFUN([gl_FUNC_MKTIME_WORKS],
11[ 26[
12 AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) 27 AC_REQUIRE([gl_TIME_T_IS_SIGNED])
28 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
13 29
14 dnl We don't use AC_FUNC_MKTIME any more, because it is no longer maintained 30 dnl We don't use AC_FUNC_MKTIME any more, because it is no longer maintained
15 dnl in Autoconf and because it invokes AC_LIBOBJ. 31 dnl in Autoconf and because it invokes AC_LIBOBJ.
16 AC_CHECK_HEADERS_ONCE([unistd.h]) 32 AC_CHECK_HEADERS_ONCE([unistd.h])
17 AC_CHECK_DECLS_ONCE([alarm]) 33 AC_CHECK_DECLS_ONCE([alarm])
18 AC_REQUIRE([gl_MULTIARCH]) 34 AC_REQUIRE([gl_MULTIARCH])
19 if test $APPLE_UNIVERSAL_BUILD = 1; then
20 # A universal build on Apple Mac OS X platforms.
21 # The test result would be 'yes' in 32-bit mode and 'no' in 64-bit mode.
22 # But we need a configuration result that is valid in both modes.
23 gl_cv_func_working_mktime=no
24 fi
25 AC_CACHE_CHECK([for working mktime], [gl_cv_func_working_mktime], 35 AC_CACHE_CHECK([for working mktime], [gl_cv_func_working_mktime],
26 [AC_RUN_IFELSE( 36 [if test $APPLE_UNIVERSAL_BUILD = 1; then
27 [AC_LANG_SOURCE( 37 # A universal build on Apple Mac OS X platforms.
38 # The test result would be 'yes' in 32-bit mode and 'no' in 64-bit mode.
39 # But we need a configuration result that is valid in both modes.
40 gl_cv_func_working_mktime="guessing no"
41 else
42 AC_RUN_IFELSE(
43 [AC_LANG_SOURCE(
28[[/* Test program from Paul Eggert and Tony Leneis. */ 44[[/* Test program from Paul Eggert and Tony Leneis. */
29#include <limits.h> 45#include <limits.h>
30#include <stdlib.h> 46#include <stdlib.h>
@@ -38,8 +54,11 @@ AC_DEFUN([gl_FUNC_MKTIME],
38# include <signal.h> 54# include <signal.h>
39#endif 55#endif
40 56
41/* Work around redefinition to rpl_putenv by other config tests. */ 57]GL_MDA_DEFINES[
42#undef putenv 58
59#ifndef TIME_T_IS_SIGNED
60# define TIME_T_IS_SIGNED 0
61#endif
43 62
44static time_t time_t_max; 63static time_t time_t_max;
45static time_t time_t_min; 64static time_t time_t_min;
@@ -63,7 +82,8 @@ spring_forward_gap ()
63 instead of "TZ=America/Vancouver" in order to detect the bug even 82 instead of "TZ=America/Vancouver" in order to detect the bug even
64 on systems that don't support the Olson extension, or don't have the 83 on systems that don't support the Olson extension, or don't have the
65 full zoneinfo tables installed. */ 84 full zoneinfo tables installed. */
66 putenv ("TZ=PST8PDT,M4.1.0,M10.5.0"); 85 if (putenv ("TZ=PST8PDT,M4.1.0,M10.5.0") != 0)
86 return -1;
67 87
68 tm.tm_year = 98; 88 tm.tm_year = 98;
69 tm.tm_mon = 3; 89 tm.tm_mon = 3;
@@ -151,7 +171,8 @@ year_2050_test ()
151 instead of "TZ=America/Vancouver" in order to detect the bug even 171 instead of "TZ=America/Vancouver" in order to detect the bug even
152 on systems that don't support the Olson extension, or don't have the 172 on systems that don't support the Olson extension, or don't have the
153 full zoneinfo tables installed. */ 173 full zoneinfo tables installed. */
154 putenv ("TZ=PST8PDT,M4.1.0,M10.5.0"); 174 if (putenv ("TZ=PST8PDT,M4.1.0,M10.5.0") != 0)
175 return -1;
155 176
156 t = mktime (&tm); 177 t = mktime (&tm);
157 178
@@ -162,6 +183,25 @@ year_2050_test ()
162 || (0 < t && answer - 120 <= t && t <= answer + 120)); 183 || (0 < t && answer - 120 <= t && t <= answer + 120));
163} 184}
164 185
186static int
187indiana_test ()
188{
189 if (putenv ("TZ=America/Indiana/Indianapolis") != 0)
190 return -1;
191 struct tm tm;
192 tm.tm_year = 1986 - 1900; tm.tm_mon = 4 - 1; tm.tm_mday = 28;
193 tm.tm_hour = 16; tm.tm_min = 24; tm.tm_sec = 50; tm.tm_isdst = 0;
194 time_t std = mktime (&tm);
195 if (! (std == 515107490 || std == 515107503))
196 return 1;
197
198 /* This platform supports TZDB, either without or with leap seconds.
199 Return true if GNU Bug#48085 is absent. */
200 tm.tm_isdst = 1;
201 time_t dst = mktime (&tm);
202 return std - dst == 60 * 60;
203}
204
165int 205int
166main () 206main ()
167{ 207{
@@ -169,7 +209,6 @@ main ()
169 time_t t, delta; 209 time_t t, delta;
170 int i, j; 210 int i, j;
171 int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1; 211 int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1;
172 int time_t_signed = ! ((time_t) 0 < (time_t) -1);
173 212
174#if HAVE_DECL_ALARM 213#if HAVE_DECL_ALARM
175 /* This test makes some buggy mktime implementations loop. 214 /* This test makes some buggy mktime implementations loop.
@@ -179,11 +218,11 @@ main ()
179 alarm (60); 218 alarm (60);
180#endif 219#endif
181 220
182 time_t_max = (! time_t_signed 221 time_t_max = (! TIME_T_IS_SIGNED
183 ? (time_t) -1 222 ? (time_t) -1
184 : ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1) 223 : ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1)
185 * 2 + 1)); 224 * 2 + 1));
186 time_t_min = (! time_t_signed 225 time_t_min = (! TIME_T_IS_SIGNED
187 ? (time_t) 0 226 ? (time_t) 0
188 : time_t_signed_magnitude 227 : time_t_signed_magnitude
189 ? ~ (time_t) 0 228 ? ~ (time_t) 0
@@ -218,35 +257,62 @@ main ()
218 result |= 16; 257 result |= 16;
219 if (! spring_forward_gap ()) 258 if (! spring_forward_gap ())
220 result |= 32; 259 result |= 32;
221 if (! year_2050_test ()) 260 if (! year_2050_test () || ! indiana_test ())
222 result |= 64; 261 result |= 64;
223 return result; 262 return result;
224}]])], 263}]])],
225 [gl_cv_func_working_mktime=yes], 264 [gl_cv_func_working_mktime=yes],
226 [gl_cv_func_working_mktime=no], 265 [gl_cv_func_working_mktime=no],
227 [gl_cv_func_working_mktime=no]) 266 [case "$host_os" in
267 # Guess no on native Windows.
268 mingw*) gl_cv_func_working_mktime="guessing no" ;;
269 *) gl_cv_func_working_mktime="$gl_cross_guess_normal" ;;
270 esac
271 ])
272 fi
228 ]) 273 ])
274])
275
276dnl Main macro of module 'mktime'.
277AC_DEFUN([gl_FUNC_MKTIME],
278[
279 AC_REQUIRE([gl_TIME_H_DEFAULTS])
280 AC_REQUIRE([AC_CANONICAL_HOST])
281 AC_REQUIRE([gl_FUNC_MKTIME_WORKS])
229 282
230 if test $gl_cv_func_working_mktime = no; then 283 REPLACE_MKTIME=0
284 if test "$gl_cv_func_working_mktime" != yes; then
231 REPLACE_MKTIME=1 285 REPLACE_MKTIME=1
232 else 286 AC_DEFINE([NEED_MKTIME_WORKING], [1],
233 REPLACE_MKTIME=0 287 [Define if the compilation of mktime.c should define 'mktime'
288 with the algorithmic workarounds.])
234 fi 289 fi
290 case "$host_os" in
291 mingw*)
292 REPLACE_MKTIME=1
293 AC_DEFINE([NEED_MKTIME_WINDOWS], [1],
294 [Define if the compilation of mktime.c should define 'mktime'
295 with the native Windows TZ workaround.])
296 ;;
297 esac
235]) 298])
236 299
300dnl Main macro of module 'mktime-internal'.
237AC_DEFUN([gl_FUNC_MKTIME_INTERNAL], [ 301AC_DEFUN([gl_FUNC_MKTIME_INTERNAL], [
238 AC_REQUIRE([gl_FUNC_MKTIME]) 302 AC_REQUIRE([gl_FUNC_MKTIME_WORKS])
239 if test $REPLACE_MKTIME = 0; then 303
240 dnl BeOS has __mktime_internal in libc, but other platforms don't. 304 WANT_MKTIME_INTERNAL=0
241 AC_CHECK_FUNC([__mktime_internal], 305 dnl BeOS has __mktime_internal in libc, but other platforms don't.
242 [AC_DEFINE([mktime_internal], [__mktime_internal], 306 AC_CHECK_FUNC([__mktime_internal],
243 [Define to the real name of the mktime_internal function.]) 307 [AC_DEFINE([mktime_internal], [__mktime_internal],
244 ], 308 [Define to the real name of the mktime_internal function.])
245 [dnl mktime works but it doesn't export __mktime_internal, 309 ],
246 dnl so we need to substitute our own mktime implementation. 310 [dnl mktime works but it doesn't export __mktime_internal,
247 REPLACE_MKTIME=1 311 dnl so we need to substitute our own mktime implementation.
248 ]) 312 WANT_MKTIME_INTERNAL=1
249 fi 313 AC_DEFINE([NEED_MKTIME_INTERNAL], [1],
314 [Define if the compilation of mktime.c should define 'mktime_internal'.])
315 ])
250]) 316])
251 317
252# Prerequisites of lib/mktime.c. 318# Prerequisites of lib/mktime.c.