version-etc: extend for packagers

[gnulib.git] / m4 / mkdir-slash.m4

diff --git a/m4/mkdir-slash.m4 b/m4/mkdir-slash.m4
index c1e595b..4e56bda 100644 (file)
--- a/m4/mkdir-slash.m4
+++ b/m4/mkdir-slash.m4
@@ -1,6 +1,6 @@
-#serial 4
+# serial 7
 
-# Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2004, 2006, 2008-2009 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -10,6 +10,8 @@
 # trailing slashes.
 AC_DEFUN([gl_FUNC_MKDIR_TRAILING_SLASH],
 [dnl
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+  AC_CHECK_HEADERS_ONCE([unistd.h])
   AC_CACHE_CHECK([whether mkdir fails due to a trailing slash],
     gl_cv_func_mkdir_trailing_slash_bug,
     [
@@ -19,6 +21,9 @@ AC_DEFUN([gl_FUNC_MKDIR_TRAILING_SLASH],
 #       include <sys/types.h>
 #       include <sys/stat.h>
 #       include <stdlib.h>
+#       ifdef HAVE_UNISTD_H
+#         include <unistd.h>
+#       endif
        int main ()
        {
          rmdir ("confdir-slash");
@@ -33,9 +38,8 @@ AC_DEFUN([gl_FUNC_MKDIR_TRAILING_SLASH],
   )
 
   if test $gl_cv_func_mkdir_trailing_slash_bug = yes; then
-    AC_LIBOBJ(mkdir)
-    AC_DEFINE(mkdir, rpl_mkdir,
-      [Define to rpl_mkdir if the replacement function should be used.])
+    REPLACE_MKDIR=1
+    AC_LIBOBJ([mkdir])
     gl_PREREQ_MKDIR
   fi
 ])