mirror of
git://git.sv.gnu.org/autoconf
synced 2025-03-19 14:40:24 +08:00
1999-04-17 Paul Eggert <eggert@twinsun.com>
* autoconf.texi, acspecific.m4 (AC_FUNC_MKTIME): New macro. taken from automake's AM_FUNC_MKTIME. * acfunctions: mktime now belongs to AC_FUNC_MKTIME.
This commit is contained in:
Tom Tromey
parent
19934c8916
commit
74f02f339e
@ -1,3 +1,9 @@
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1999-04-17 Paul Eggert <eggert@twinsun.com>
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* autoconf.texi, acspecific.m4 (AC_FUNC_MKTIME): New macro.
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taken from automake's AM_FUNC_MKTIME.
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* acfunctions: mktime now belongs to AC_FUNC_MKTIME.
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1999-04-19 Matthew D. Langston <langston@SLAC.Stanford.EDU>
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* acgeneral.m4 (AC_TRY_LINK_FUNC): Add support for Fortran 77.
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@ -20,6 +20,7 @@ signal AC_TYPE_SIGNAL
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alloca AC_FUNC_ALLOCA
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fnmatch AC_FUNC_FNMATCH
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getloadavg AC_FUNC_GETLOADAVG
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mktime AC_FUNC_MKTIME
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mmap AC_FUNC_MMAP
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setvbuf AC_FUNC_SETVBUF_REVERSED
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strcoll AC_FUNC_STRCOLL
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@ -40,7 +41,6 @@ getcwd AC_CHECK_FUNCS
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getwd AC_CHECK_FUNCS
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mkdir AC_CHECK_FUNCS
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mkfifo AC_CHECK_FUNCS
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mktime AC_CHECK_FUNCS
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putenv AC_CHECK_FUNCS
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re_comp AC_CHECK_FUNCS
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regcmp AC_CHECK_FUNCS
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162
acspecific.m4
162
acspecific.m4
@ -1642,6 +1642,168 @@ AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
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[AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
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AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
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AC_DEFUN(AC_FUNC_MKTIME,
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[AC_REQUIRE([AC_HEADER_TIME])dnl
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AC_CHECK_HEADERS(sys/time.h unistd.h)
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AC_CHECK_FUNCS(alarm)
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AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
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[AC_TRY_RUN(
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changequote(<<, >>)dnl
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<</* Test program from Paul Eggert (eggert@twinsun.com)
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and Tony Leneis (tony@plaza.ds.adp.com). */
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#if !HAVE_ALARM
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# define alarm(X) /* empty */
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#endif
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/* Work around redefinition to rpl_putenv by other config tests. */
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#undef putenv
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static time_t time_t_max;
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/* Values we'll use to set the TZ environment variable. */
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static const char *const tz_strings[] = {
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(const char *) 0, "TZ=GMT0", "TZ=JST-9",
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"TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
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};
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#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
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/* Fail if mktime fails to convert a date in the spring-forward gap.
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Based on a problem report from Andreas Jaeger. */
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static void
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spring_forward_gap ()
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{
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/* glibc (up to about 1998-10-07) failed this test) */
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struct tm tm;
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/* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
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instead of "TZ=America/Vancouver" in order to detect the bug even
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on systems that don't support the Olson extension, or don't have the
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full zoneinfo tables installed. */
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putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
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tm.tm_year = 98;
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tm.tm_mon = 3;
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tm.tm_mday = 5;
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tm.tm_hour = 2;
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tm.tm_min = 0;
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tm.tm_sec = 0;
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tm.tm_isdst = -1;
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if (mktime (&tm) == (time_t)-1)
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exit (1);
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}
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static void
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mktime_test (now)
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time_t now;
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{
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struct tm *lt;
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if ((lt = localtime (&now)) && mktime (lt) != now)
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exit (1);
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now = time_t_max - now;
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if ((lt = localtime (&now)) && mktime (lt) != now)
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exit (1);
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}
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static void
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irix_6_4_bug ()
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{
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/* Based on code from Ariel Faigon. */
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struct tm tm;
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tm.tm_year = 96;
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tm.tm_mon = 3;
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tm.tm_mday = 0;
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tm.tm_hour = 0;
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tm.tm_min = 0;
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tm.tm_sec = 0;
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tm.tm_isdst = -1;
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mktime (&tm);
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if (tm.tm_mon != 2 || tm.tm_mday != 31)
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exit (1);
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}
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static void
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bigtime_test (j)
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int j;
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{
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struct tm tm;
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time_t now;
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tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
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now = mktime (&tm);
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if (now != (time_t) -1)
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{
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struct tm *lt = localtime (&now);
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if (! (lt
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&& lt->tm_year == tm.tm_year
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&& lt->tm_mon == tm.tm_mon
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&& lt->tm_mday == tm.tm_mday
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&& lt->tm_hour == tm.tm_hour
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&& lt->tm_min == tm.tm_min
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&& lt->tm_sec == tm.tm_sec
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&& lt->tm_yday == tm.tm_yday
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&& lt->tm_wday == tm.tm_wday
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&& ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
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== (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
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exit (1);
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}
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}
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int
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main ()
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{
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time_t t, delta;
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int i, j;
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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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alarm (60);
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for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
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continue;
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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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{
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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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mktime_test (t);
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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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for (j = 1; 0 < j; j *= 2)
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bigtime_test (j);
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bigtime_test (j - 1);
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}
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irix_6_4_bug ();
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spring_forward_gap ();
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exit (0);
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}
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>>,
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changequote([, ])dnl
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ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
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ac_cv_func_working_mktime=no)])
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if test $ac_cv_func_working_mktime = no; then
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LIBOBJS="$LIBOBJS mktime.${ac_objext}"
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fi
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])
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AC_DEFUN(AC_FUNC_STRFTIME,
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[AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)],
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[# strftime is in -lintl on SCO UNIX.
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@ -2053,6 +2053,13 @@ If the @code{memcmp} function is not available, or does not work on
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variable @code{LIBOBJS}.
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@end defmac
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@defmac AC_FUNC_MKTIME
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@maindex FUNC_MKTIME
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@ovindex LIBOBJS
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If the @code{mktime} function is not available, or does not work
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correctly, add @samp{mktime.o} to output variable @code{LIBOBJS}.
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@end defmac
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@defmac AC_FUNC_MMAP
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@maindex FUNC_MMAP
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@cvindex HAVE_MMAP
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@ -2053,6 +2053,13 @@ If the @code{memcmp} function is not available, or does not work on
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variable @code{LIBOBJS}.
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@end defmac
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@defmac AC_FUNC_MKTIME
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@maindex FUNC_MKTIME
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@ovindex LIBOBJS
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If the @code{mktime} function is not available, or does not work
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correctly, add @samp{mktime.o} to output variable @code{LIBOBJS}.
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@end defmac
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@defmac AC_FUNC_MMAP
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@maindex FUNC_MMAP
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@cvindex HAVE_MMAP
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@ -1642,6 +1642,168 @@ AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
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[AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
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AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
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AC_DEFUN(AC_FUNC_MKTIME,
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[AC_REQUIRE([AC_HEADER_TIME])dnl
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AC_CHECK_HEADERS(sys/time.h unistd.h)
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AC_CHECK_FUNCS(alarm)
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AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
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[AC_TRY_RUN(
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changequote(<<, >>)dnl
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<</* Test program from Paul Eggert (eggert@twinsun.com)
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and Tony Leneis (tony@plaza.ds.adp.com). */
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#if HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#if !HAVE_ALARM
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# define alarm(X) /* empty */
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#endif
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/* Work around redefinition to rpl_putenv by other config tests. */
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#undef putenv
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static time_t time_t_max;
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/* Values we'll use to set the TZ environment variable. */
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static const char *const tz_strings[] = {
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(const char *) 0, "TZ=GMT0", "TZ=JST-9",
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"TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
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};
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#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
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/* Fail if mktime fails to convert a date in the spring-forward gap.
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Based on a problem report from Andreas Jaeger. */
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static void
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spring_forward_gap ()
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{
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/* glibc (up to about 1998-10-07) failed this test) */
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struct tm tm;
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/* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
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instead of "TZ=America/Vancouver" in order to detect the bug even
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on systems that don't support the Olson extension, or don't have the
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full zoneinfo tables installed. */
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putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
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tm.tm_year = 98;
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tm.tm_mon = 3;
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tm.tm_mday = 5;
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tm.tm_hour = 2;
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tm.tm_min = 0;
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tm.tm_sec = 0;
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tm.tm_isdst = -1;
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if (mktime (&tm) == (time_t)-1)
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exit (1);
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}
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static void
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mktime_test (now)
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time_t now;
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{
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struct tm *lt;
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if ((lt = localtime (&now)) && mktime (lt) != now)
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exit (1);
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now = time_t_max - now;
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if ((lt = localtime (&now)) && mktime (lt) != now)
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exit (1);
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}
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static void
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irix_6_4_bug ()
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{
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/* Based on code from Ariel Faigon. */
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struct tm tm;
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tm.tm_year = 96;
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tm.tm_mon = 3;
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tm.tm_mday = 0;
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tm.tm_hour = 0;
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tm.tm_min = 0;
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tm.tm_sec = 0;
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tm.tm_isdst = -1;
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mktime (&tm);
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if (tm.tm_mon != 2 || tm.tm_mday != 31)
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exit (1);
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}
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static void
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bigtime_test (j)
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int j;
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{
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struct tm tm;
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time_t now;
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tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
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now = mktime (&tm);
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if (now != (time_t) -1)
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{
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struct tm *lt = localtime (&now);
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if (! (lt
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&& lt->tm_year == tm.tm_year
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&& lt->tm_mon == tm.tm_mon
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&& lt->tm_mday == tm.tm_mday
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&& lt->tm_hour == tm.tm_hour
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&& lt->tm_min == tm.tm_min
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&& lt->tm_sec == tm.tm_sec
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&& lt->tm_yday == tm.tm_yday
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&& lt->tm_wday == tm.tm_wday
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&& ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
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== (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
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exit (1);
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}
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}
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int
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main ()
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{
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time_t t, delta;
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int i, j;
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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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alarm (60);
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for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
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continue;
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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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{
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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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mktime_test (t);
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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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for (j = 1; 0 < j; j *= 2)
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bigtime_test (j);
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bigtime_test (j - 1);
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}
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irix_6_4_bug ();
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spring_forward_gap ();
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exit (0);
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}
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>>,
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changequote([, ])dnl
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ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
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ac_cv_func_working_mktime=no)])
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if test $ac_cv_func_working_mktime = no; then
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LIBOBJS="$LIBOBJS mktime.${ac_objext}"
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fi
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])
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AC_DEFUN(AC_FUNC_STRFTIME,
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[AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)],
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[# strftime is in -lintl on SCO UNIX.
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@ -20,6 +20,7 @@ signal AC_TYPE_SIGNAL
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alloca AC_FUNC_ALLOCA
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fnmatch AC_FUNC_FNMATCH
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getloadavg AC_FUNC_GETLOADAVG
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mktime AC_FUNC_MKTIME
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mmap AC_FUNC_MMAP
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setvbuf AC_FUNC_SETVBUF_REVERSED
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strcoll AC_FUNC_STRCOLL
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@ -40,7 +41,6 @@ getcwd AC_CHECK_FUNCS
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getwd AC_CHECK_FUNCS
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mkdir AC_CHECK_FUNCS
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mkfifo AC_CHECK_FUNCS
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mktime AC_CHECK_FUNCS
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putenv AC_CHECK_FUNCS
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re_comp AC_CHECK_FUNCS
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regcmp AC_CHECK_FUNCS
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||||
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