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authorJim Meyering <jim@meyering.net>1999-01-31 05:07:11 +0000
committerJim Meyering <jim@meyering.net>1999-01-31 05:07:11 +0000
commiteaacf48c40ef4d2a31afaa18f8a7e9e625541cb6 (patch)
tree6d24754753076f8f9a4223e68611f0b83e58f0b8 /m4
parent263bc0f77bb0cb2edf8fca704b11f46134e82bec (diff)
downloadcoreutils-eaacf48c40ef4d2a31afaa18f8a7e9e625541cb6.tar.xz
.
Diffstat (limited to 'm4')
-rw-r--r--m4/mktime.m4166
1 files changed, 0 insertions, 166 deletions
diff --git a/m4/mktime.m4 b/m4/mktime.m4
deleted file mode 100644
index 10e02db55..000000000
--- a/m4/mktime.m4
+++ /dev/null
@@ -1,166 +0,0 @@
-#serial 1001
-
-dnl Just like mktime.m4 from automake-1.3b, but with an additional test.
-dnl Renamed to have jm_ prefix and to use jm_ prefix on cache variable names.
-
-AC_DEFUN(jm_AM_FUNC_MKTIME,
-[AC_REQUIRE([AC_HEADER_TIME])dnl
- AC_CHECK_HEADERS(sys/time.h unistd.h)
- AC_CHECK_FUNCS(alarm)
- AC_CACHE_CHECK([for working mktime], jm_am_cv_func_working_mktime,
- [AC_TRY_RUN(
-changequote(<<, >>)dnl
-<</* Test program from Paul Eggert (eggert@twinsun.com)
- and Tony Leneis (tony@plaza.ds.adp.com). */
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#if !HAVE_ALARM
-# define alarm(X) /* empty */
-#endif
-
-/* Work around redefinition to rpl_putenv by other config tests. */
-#undef putenv
-
-static time_t time_t_max;
-
-/* Values we'll use to set the TZ environment variable. */
-static const char *const tz_strings[] = {
- (const char *) 0, "TZ=GMT0", "TZ=JST-9",
- "TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
-};
-#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
-
-/* Fail if mktime fails to convert a date in the spring-forward gap.
- Based on a problem report from Andreas Jaeger. */
-static void
-spring_forward_gap ()
-{
- /* glibc (up to about 1998-10-07) failed this test) */
- struct tm tm;
-
- /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
- instead of "TZ=America/Vancouver" in order to detect the bug even
- on systems that don't support the Olson extension, or don't have the
- full zoneinfo tables installed. */
- putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
- tm.tm_year = 98;
- tm.tm_mon = 3;
- tm.tm_mday = 5;
- tm.tm_hour = 2;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- if (mktime (&tm) == (time_t)-1)
- exit (1);
-}
-
-static void
-mktime_test (now)
- time_t now;
-{
- struct tm *lt;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
- now = time_t_max - now;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
-}
-
-static void
-irix_6_4_bug ()
-{
- /* Based on code from Ariel Faigon. */
- struct tm tm;
- tm.tm_year = 96;
- tm.tm_mon = 3;
- tm.tm_mday = 0;
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- mktime (&tm);
- if (tm.tm_mon != 2 || tm.tm_mday != 31)
- exit (1);
-}
-
-static void
-bigtime_test (j)
- int j;
-{
- struct tm tm;
- time_t now;
- tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
- /* This test makes some buggy mktime implementations loop.
- Give up after 10 seconds. */
- alarm (10);
- now = mktime (&tm);
- alarm (0);
- if (now != (time_t) -1)
- {
- struct tm *lt = localtime (&now);
- if (! (lt
- && lt->tm_year == tm.tm_year
- && lt->tm_mon == tm.tm_mon
- && lt->tm_mday == tm.tm_mday
- && lt->tm_hour == tm.tm_hour
- && lt->tm_min == tm.tm_min
- && lt->tm_sec == tm.tm_sec
- && lt->tm_yday == tm.tm_yday
- && lt->tm_wday == tm.tm_wday
- && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
- == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
- exit (1);
- }
-}
-
-int
-main ()
-{
- time_t t, delta;
- int i, j;
-
- spring_forward_gap ();
- for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
- continue;
- time_t_max--;
- delta = time_t_max / 997; /* a suitable prime number */
- for (i = 0; i < N_STRINGS; i++)
- {
- if (tz_strings[i])
- putenv (tz_strings[i]);
-
- for (t = 0; t <= time_t_max - delta; t += delta)
- mktime_test (t);
- mktime_test ((time_t) 60 * 60);
- mktime_test ((time_t) 60 * 60 * 24);
-
- for (j = 1; 0 < j; j *= 2)
- bigtime_test (j);
- bigtime_test (j - 1);
- }
- irix_6_4_bug ();
- exit (0);
-}
- >>,
-changequote([, ])dnl
- jm_am_cv_func_working_mktime=yes, jm_am_cv_func_working_mktime=no,
- dnl When crosscompiling, assume mktime is missing or broken.
- jm_am_cv_func_working_mktime=no)
- ])
- if test $jm_am_cv_func_working_mktime = no; then
- LIBOBJS="$LIBOBJS mktime.o"
- fi
-])