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Diffstat (limited to 'm4/jm-mktime.m4')
| -rw-r--r-- | m4/jm-mktime.m4 | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/m4/jm-mktime.m4 b/m4/jm-mktime.m4 deleted file mode 100644 index be4191f4..00000000 --- a/m4/jm-mktime.m4 +++ /dev/null @@ -1,178 +0,0 @@ -#serial 7 - -dnl From Jim Meyering. -dnl A wrapper around AC_FUNC_MKTIME. - -AC_DEFUN(jm_FUNC_MKTIME, -[AC_REQUIRE([AC_FUNC_MKTIME])dnl - - dnl mktime.c uses localtime_r if it exists. Check for it. - AC_CHECK_FUNCS(localtime_r) - - if test $ac_cv_func_working_mktime = no; then - AC_DEFINE_UNQUOTED(mktime, rpl_mktime, - [Define to rpl_mktime if the replacement function should be used.]) - fi -]) - -# AC_FUNC_MKTIME -# -------------- -# Stolen from CVS Autoconf. Should be removed once you use Autoconf 2.15. -AC_DEFUN(AC_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], ac_cv_func_working_mktime, -[AC_TRY_RUN( -[/* 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; - now = mktime (&tm); - 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; - - /* This test makes some buggy mktime implementations loop. - Give up after 60 seconds; a mktime slower than that - isn't worth using anyway. */ - alarm (60); - - 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 (); - spring_forward_gap (); - exit (0); -}], -ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no, -ac_cv_func_working_mktime=no)]) -if test $ac_cv_func_working_mktime = no; then - LIBOBJS="$LIBOBJS mktime.${ac_objext}" -fi -])# AC_FUNC_MKTIME
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