Macro: ag_check_strftime

Back to the Main Page. | # ag_check_strftime | Download the M4 Source.

Synopsis

  `AG_CHECK_STRFTIME`

Version

  1.1 (2001/11/11) bkorb @ ac-archive-0.5.39

Author

  autogen.sf.net is a project of Bruce Korb <bkorb@gnu.org>

Description

  Check for existence and functioning of strftime routine.

M4 Source Code

      AC_DEFUN(AG_CHECK_STRFTIME,[
        AC_MSG_CHECKING([whether strftime() works])
        AC_CACHE_VAL([ag_cv_strftime],[
        AC_TRY_RUN([#include <time.h>
      char t_buf[ 64 ];
      int main() {
        static const char z[] = "Thursday Aug 28 240";
        struct tm tm;
        tm.tm_sec   = 36;  /* seconds after the minute [0, 61]  */
        tm.tm_min   = 44;  /* minutes after the hour [0, 59] */
        tm.tm_hour  = 12;  /* hour since midnight [0, 23] */
        tm.tm_mday  = 28;  /* day of the month [1, 31] */
        tm.tm_mon   =  7;  /* months since January [0, 11] */
        tm.tm_year  = 86;  /* years since 1900 */
        tm.tm_wday  =  4;  /* days since Sunday [0, 6] */
        tm.tm_yday  = 239; /* days since January 1 [0, 365] */
        tm.tm_isdst =  1;  /* flag for daylight savings time */
        strftime( t_buf, sizeof( t_buf ), "%A %b %d %j", &tm );
        return (strcmp( t_buf, z ) != 0); }],[ag_cv_strftime=yes],[ag_cv_strftime=no],[ag_cv_strftime=no]
                 ) # end of TRY_RUN]) # end of CACHE_VAL

       AC_MSG_RESULT([$ag_cv_strftime])
       if test x$ag_cv_strftime = xyes
       then
         AC_DEFINE(HAVE_STRFTIME, 1,
            [Define this if strftime() works])
       fi
       ]) # end of AC_DEFUN