+dnl This macro is intended to be used solely in this file.
+dnl These are the prerequisite macros for GNU's strftime.c replacement.
+AC_DEFUN(_jm_STRFTIME_PREREQS,
+[
+ dnl strftime.c uses localtime_r and the underyling system strftime
+ dnl if they exist.
+ AC_CHECK_FUNCS(localtime_r strftime)
+
+ AC_CHECK_HEADERS(limits.h)
+ AC_CHECK_FUNCS(bcopy tzset mempcpy memcpy memset)
+
+ # This defines (or not) HAVE_TZNAME and HAVE_TM_ZONE.
+ AC_STRUCT_TIMEZONE
+
+ AC_CHECK_FUNCS(mblen mbrlen)
+
+ AC_CHECK_MEMBER([struct tm.tm_gmtoff],
+ [AC_DEFINE(HAVE_TM_GMTOFF, 1,
+ [Define if struct tm has the tm_gmtoff member.])],
+ ,
+ [#include <time.h>])
+])
+
+dnl Determine if the strftime function has all the features of the GNU one.
+dnl