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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_check_strftime.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_STRFTIME
#
# DESCRIPTION
#
# Check for existence and functioning of strftime routine.
#
# LICENSE
#
# Copyright (c) 2008 Bruce Korb <bkorb@gnu.org>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 8
AU_ALIAS([AG_CHECK_STRFTIME], [AX_CHECK_STRFTIME])
AC_DEFUN([AX_CHECK_STRFTIME],[
AC_MSG_CHECKING([whether strftime() works])
AC_CACHE_VAL([ax_cv_strftime],[
AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
#include <string.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); }]])],[ax_cv_strftime=yes],[ax_cv_strftime=no],[ax_cv_strftime=no]
) # end of TRY_RUN]) # end of CACHE_VAL
AC_MSG_RESULT([$ax_cv_strftime])
if test x$ax_cv_strftime = xyes
then
AC_DEFINE(HAVE_STRFTIME, 1,
[Define this if strftime() works])
fi
]) # end of AC_DEFUN of AX_CHECK_STRFTIME
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