Expect rpmatch to be declared.

[gnulib.git] / m4 / time_r.m4

diff --git a/m4/time_r.m4 b/m4/time_r.m4
index ac8353a..c871b56 100644 (file)
--- a/m4/time_r.m4
+++ b/m4/time_r.m4
@@ -1,6 +1,6 @@
 dnl Reentrant time functions like localtime_r.
 
-dnl Copyright (C) 2003, 2006 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -9,7 +9,10 @@ dnl Written by Paul Eggert.
 
 AC_DEFUN([gl_TIME_R],
 [
+ dnl Persuade glibc and Solaris <time.h> to declare localtime_r.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
   AC_REQUIRE([AC_C_RESTRICT])
 
   AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature],
@@ -20,14 +23,15 @@ AC_DEFUN([gl_TIME_R],
           even though the POSIX signature has the 'restrict's,
           since C99 says they can't affect type compatibility.  */
        struct tm * (*ptr) (time_t const *, struct tm *) = localtime_r;
-        if (ptr) return 0;],
+        if (ptr) return 0;
+        /* Check the return type is a pointer.  On HP-UX 10 it is 'int'.  */
+        *localtime_r (0, 0);],
        [gl_cv_time_r_posix=yes],
        [gl_cv_time_r_posix=no])])
   if test $gl_cv_time_r_posix = yes; then
-    AC_DEFINE([HAVE_TIME_R_POSIX], 1,
-      [Define to 1 if localtime_r, etc. have the type signatures that
-       POSIX requires.])
+    REPLACE_LOCALTIME_R=0
   else
+    REPLACE_LOCALTIME_R=1
     AC_LIBOBJ([time_r])
     gl_PREREQ_TIME_R
   fi