Imported Upstream version 1.4.16+git20130902
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517 changed files with 44015 additions and 43295 deletions
143
gl/m4/mktime.m4
143
gl/m4/mktime.m4
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@ -1,5 +1,5 @@
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# serial 15
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dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
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# serial 25
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dnl Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software Foundation,
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dnl Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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@ -7,24 +7,24 @@ dnl with or without modifications, as long as this notice is preserved.
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dnl From Jim Meyering.
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# Redefine AC_FUNC_MKTIME, to fix a bug in Autoconf 2.61a and earlier.
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# This redefinition can be removed once a new version of Autoconf is assumed.
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# The redefinition is taken from
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# <http://cvs.sv.gnu.org/viewcvs/*checkout*/autoconf/autoconf/lib/autoconf/functions.m4?rev=1.119>.
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# AC_FUNC_MKTIME
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# --------------
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AC_DEFUN([AC_FUNC_MKTIME],
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[AC_CHECK_HEADERS_ONCE([unistd.h])
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AC_CHECK_FUNCS_ONCE([alarm])
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AC_REQUIRE([gl_MULTIARCH])
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if test $APPLE_UNIVERSAL_BUILD = 1; then
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# A universal build on Apple MacOS X platforms.
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# The test result would be 'yes' in 32-bit mode and 'no' in 64-bit mode.
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# But we need a configuration result that is valid in both modes.
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ac_cv_func_working_mktime=no
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fi
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AC_CACHE_CHECK([for working mktime], [ac_cv_func_working_mktime],
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[AC_RUN_IFELSE([AC_LANG_SOURCE(
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AC_DEFUN([gl_FUNC_MKTIME],
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[
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AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
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dnl We don't use AC_FUNC_MKTIME any more, because it is no longer maintained
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dnl in Autoconf and because it invokes AC_LIBOBJ.
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AC_CHECK_HEADERS_ONCE([unistd.h])
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AC_CHECK_DECLS_ONCE([alarm])
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AC_REQUIRE([gl_MULTIARCH])
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if test $APPLE_UNIVERSAL_BUILD = 1; then
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# A universal build on Apple Mac OS X platforms.
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# The test result would be 'yes' in 32-bit mode and 'no' in 64-bit mode.
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# But we need a configuration result that is valid in both modes.
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gl_cv_func_working_mktime=no
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fi
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AC_CACHE_CHECK([for working mktime], [gl_cv_func_working_mktime],
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[AC_RUN_IFELSE(
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[AC_LANG_SOURCE(
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[[/* Test program from Paul Eggert and Tony Leneis. */
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#include <limits.h>
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#include <stdlib.h>
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@ -34,8 +34,8 @@ AC_CACHE_CHECK([for working mktime], [ac_cv_func_working_mktime],
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# include <unistd.h>
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#endif
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#ifndef HAVE_ALARM
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# define alarm(X) /* empty */
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#if HAVE_DECL_ALARM
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# include <signal.h>
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#endif
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/* Work around redefinition to rpl_putenv by other config tests. */
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@ -165,22 +165,29 @@ year_2050_test ()
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int
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main ()
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{
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int result = 0;
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time_t t, delta;
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int i, j;
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int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1;
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int time_t_signed = ! ((time_t) 0 < (time_t) -1);
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#if HAVE_DECL_ALARM
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/* This test makes some buggy mktime implementations loop.
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Give up after 60 seconds; a mktime slower than that
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isn't worth using anyway. */
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signal (SIGALRM, SIG_DFL);
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alarm (60);
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#endif
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for (;;)
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{
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t = (time_t_max << 1) + 1;
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if (t <= time_t_max)
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break;
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time_t_max = t;
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}
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time_t_min = - ((time_t) ~ (time_t) 0 == (time_t) -1) - time_t_max;
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time_t_max = (! time_t_signed
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? (time_t) -1
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: ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1)
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* 2 + 1));
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time_t_min = (! time_t_signed
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? (time_t) 0
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: time_t_signed_magnitude
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? ~ (time_t) 0
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: ~ time_t_max);
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delta = time_t_max / 997; /* a suitable prime number */
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for (i = 0; i < N_STRINGS; i++)
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@ -188,47 +195,59 @@ main ()
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if (tz_strings[i])
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putenv (tz_strings[i]);
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for (t = 0; t <= time_t_max - delta; t += delta)
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for (t = 0; t <= time_t_max - delta && (result & 1) == 0; t += delta)
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if (! mktime_test (t))
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return 1;
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if (! (mktime_test ((time_t) 1)
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&& mktime_test ((time_t) (60 * 60))
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&& mktime_test ((time_t) (60 * 60 * 24))))
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return 1;
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result |= 1;
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if ((result & 2) == 0
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&& ! (mktime_test ((time_t) 1)
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&& mktime_test ((time_t) (60 * 60))
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&& mktime_test ((time_t) (60 * 60 * 24))))
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result |= 2;
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for (j = 1; ; j <<= 1)
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if (! bigtime_test (j))
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return 1;
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else if (INT_MAX / 2 < j)
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break;
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if (! bigtime_test (INT_MAX))
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return 1;
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for (j = 1; (result & 4) == 0; j <<= 1)
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{
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if (! bigtime_test (j))
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result |= 4;
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if (INT_MAX / 2 < j)
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break;
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}
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if ((result & 8) == 0 && ! bigtime_test (INT_MAX))
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result |= 8;
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}
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return ! (irix_6_4_bug () && spring_forward_gap () && year_2050_test ());
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if (! irix_6_4_bug ())
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result |= 16;
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if (! spring_forward_gap ())
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result |= 32;
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if (! year_2050_test ())
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result |= 64;
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return result;
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}]])],
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[ac_cv_func_working_mktime=yes],
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[ac_cv_func_working_mktime=no],
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[ac_cv_func_working_mktime=no])])
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if test $ac_cv_func_working_mktime = no; then
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AC_LIBOBJ([mktime])
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fi
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])# AC_FUNC_MKTIME
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[gl_cv_func_working_mktime=yes],
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[gl_cv_func_working_mktime=no],
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[gl_cv_func_working_mktime=no])
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])
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AC_DEFUN([gl_FUNC_MKTIME],
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[
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AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
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AC_FUNC_MKTIME
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dnl Note: AC_FUNC_MKTIME does AC_LIBOBJ([mktime]).
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if test $ac_cv_func_working_mktime = no; then
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if test $gl_cv_func_working_mktime = no; then
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REPLACE_MKTIME=1
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gl_PREREQ_MKTIME
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else
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REPLACE_MKTIME=0
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fi
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])
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# Prerequisites of lib/mktime.c.
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AC_DEFUN([gl_PREREQ_MKTIME],
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[
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AC_REQUIRE([AC_C_INLINE])
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AC_DEFUN([gl_FUNC_MKTIME_INTERNAL], [
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AC_REQUIRE([gl_FUNC_MKTIME])
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if test $REPLACE_MKTIME = 0; then
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dnl BeOS has __mktime_internal in libc, but other platforms don't.
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AC_CHECK_FUNC([__mktime_internal],
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[AC_DEFINE([mktime_internal], [__mktime_internal],
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[Define to the real name of the mktime_internal function.])
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],
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[dnl mktime works but it doesn't export __mktime_internal,
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dnl so we need to substitute our own mktime implementation.
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REPLACE_MKTIME=1
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])
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fi
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])
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# Prerequisites of lib/mktime.c.
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AC_DEFUN([gl_PREREQ_MKTIME], [:])
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