fi
])
-#serial 4
-
-dnl From Jim Meyering.
-dnl FIXME: this should migrate into libit.
-
-AC_DEFUN(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], 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, "GMT0", "JST-9",
- "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]))
-
-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;
-
- 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
- am_cv_func_working_mktime=yes, am_cv_func_working_mktime=no,
- dnl When crosscompiling, assume mktime is missing or broken.
- am_cv_func_working_mktime=no)
- ])
- if test $am_cv_func_working_mktime = no; then
- LIBOBJS="$LIBOBJS mktime.o"
- fi
-])
-
-
-
-
-
-
-
-
-AC_DEFUN(AM_FUNC_STRTOD,
-[AC_CACHE_CHECK(for working strtod, am_cv_func_strtod,
-[AC_TRY_RUN([
-double strtod ();
-int
-main()
-{
- {
- /* Some versions of Linux strtod mis-parse strings with leading '+'. */
- char *string = " +69";
- char *term;
- double value;
- value = strtod (string, &term);
- if (value != 69 || term != (string + 4))
- exit (1);
- }
-
- {
- /* Under Solaris 2.4, strtod returns the wrong value for the
- terminating character under some conditions. */
- char *string = "NaN";
- char *term;
- strtod (string, &term);
- if (term != string && *(term - 1) == 0)
- exit (1);
- }
- exit (0);
-}
-], am_cv_func_strtod=yes, am_cv_func_strtod=no, am_cv_func_strtod=no)])
-test $am_cv_func_strtod = no && LIBOBJS="$LIBOBJS strtod.o"
-AC_SUBST(LIBOBJS)dnl
-am_cv_func_strtod_needs_libm=no
-if test $am_cv_func_strtod = no; then
- AC_CHECK_FUNCS(pow)
- if test $ac_cv_func_pow = no; then
- AC_CHECK_LIB(m, pow, [am_cv_func_strtod_needs_libm=yes],
- [AC_MSG_WARN(can't find library containing definition of pow)])
- fi
-fi
-])
-
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