X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fpathmax.m4;h=4913fa06cb850749c4f33bf5fcfdc01b5cf5c917;hb=f91a52116057e8f56e1af7dd58b2ded6274d60e5;hp=95ab044d841a1f8b46483842294bf48f4516ab79;hpb=552a680fa612218b68d4ef2f49bc276b95f6677b;p=gnulib.git

diff --git a/m4/pathmax.m4 b/m4/pathmax.m4
index 95ab044d8..4913fa06c 100644
--- a/m4/pathmax.m4
+++ b/m4/pathmax.m4
@@ -1,13 +1,42 @@
-# pathmax.m4 serial 2
-dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# pathmax.m4 serial 10
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2011 Free Software Foundation,
+dnl 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.
 
 AC_DEFUN([gl_PATHMAX],
 [
   dnl Prerequisites of lib/pathmax.h.
-  AC_CHECK_HEADERS_ONCE(sys/param.h unistd.h)
+  AC_CHECK_HEADERS_ONCE([sys/param.h])
+])
+
+# Expands to a piece of C program that defines PATH_MAX in the same way as
+# "pathmax.h" will do.
+AC_DEFUN([gl_PATHMAX_SNIPPET], [[
+/* Arrange to define PATH_MAX, like "pathmax.h" does. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <limits.h>
+#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
+# include <sys/param.h>
+#endif
+#if !defined PATH_MAX && defined MAXPATHLEN
+# define PATH_MAX MAXPATHLEN
+#endif
+#ifdef __hpux
+# undef PATH_MAX
+# define PATH_MAX 1024
+#endif
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# undef PATH_MAX
+# define PATH_MAX 260
+#endif
+]])
+
+# Prerequisites of gl_PATHMAX_SNIPPET.
+AC_DEFUN([gl_PATHMAX_SNIPPET_PREREQ],
+[
+  AC_CHECK_HEADERS_ONCE([unistd.h sys/param.h])
 ])