Back out the 2000-04-02 change.

[gnulib.git] / m4 / strftime.m4

diff --git a/m4/strftime.m4 b/m4/strftime.m4
index e2074ab..732eacc 100644 (file)
--- a/m4/strftime.m4
+++ b/m4/strftime.m4
@@ -1,14 +1,26 @@
-#serial 6
+#serial 13
 
 dnl This macro is intended to be used solely in this file.
 dnl These are the prerequisite macros for GNU's strftime.c replacement.
-dnl FIXME: the list is far from complete
 AC_DEFUN(_jm_STRFTIME_PREREQS,
 [
- dnl strftime.c uses localtime_r if it exists.  Check for it.
- AC_CHECK_FUNCS(localtime_r)
- dnl FIXME: add tests for everything in strftime.c: e.g., HAVE_BCOPY,
- dnl HAVE_TZNAME, HAVE_TZSET, HAVE_TM_ZONE, etc.
+ 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.
@@ -25,8 +37,7 @@ AC_DEFUN(jm_FUNC_GNU_STRFTIME,
  AC_CHECK_HEADERS(sys/time.h)
  AC_CACHE_CHECK([for working GNU strftime], jm_cv_func_working_gnu_strftime,
   [AC_TRY_RUN(
-changequote(<<, >>)dnl
-<< /* Ulrich Drepper provided parts of the test program.  */
+[ /* Ulrich Drepper provided parts of the test program.  */
 #if STDC_HEADERS
 # include <stdlib.h>
 #endif
@@ -66,6 +77,11 @@ main ()
   time_t t = 738367; /* Fri Jan  9 13:06:07 1970 */
   tm = gmtime (&t);
 
+  /* Undefine this in case the configure-time putenv test has defined it
+     to something else.  The use we make of this function here doesn't
+     require the added functionality of the replacement one.  */
+#undef putenv
+
   /* This is necessary to make strftime give consistent zone strings and
      e.g., seconds since the epoch (%s).  */
   putenv ("TZ=GMT0");
@@ -104,7 +120,6 @@ main ()
   CMP ("%^c", "FRI JAN  9 13:06:07 1970");
   CMP ("%d", "09");
   CMP ("%e", " 9");            /* POSIX.2 */
-  CMP ("%f", "5");             /* POSIX.2 */
   CMP ("%g", "70");            /* GNU */
   CMP ("%h", "Jan");           /* POSIX.2 */
   CMP ("%^h", "JAN");
@@ -124,15 +139,14 @@ main ()
   CMP ("%z", "+0000");         /* GNU */
 
   exit (n_fail ? 1 : 0);
-}
-             >>,
-changequote([, ])dnl
+}],
             jm_cv_func_working_gnu_strftime=yes,
              jm_cv_func_working_gnu_strftime=no,
             dnl When crosscompiling, assume strftime is missing or broken.
             jm_cv_func_working_gnu_strftime=no)
   ])
   if test $jm_cv_func_working_gnu_strftime = no; then
+    AC_SUBST(LIBOBJS)
     LIBOBJS="$LIBOBJS strftime.$ac_objext"
     AC_DEFINE_UNQUOTED(strftime, gnu_strftime,
       [Define to gnu_strftime if the replacement function should be used.])