Tests for module 'printf-frexpl'.

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

diff --git a/m4/mkdir-slash.m4 b/m4/mkdir-slash.m4
index 7507b55..3c25d2a 100644 (file)
--- a/m4/mkdir-slash.m4
+++ b/m4/mkdir-slash.m4
@@ -1,10 +1,16 @@
-#serial 3
+#serial 5
+
+# Copyright (C) 2001, 2003, 2004, 2006 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.
 
 # On some systems, mkdir ("foo/", 0700) fails because of the trailing slash.
 # On such systems, arrange to use a wrapper function that removes any
 # trailing slashes.
 AC_DEFUN([gl_FUNC_MKDIR_TRAILING_SLASH],
 [dnl
+  AC_CHECK_HEADERS_ONCE(unistd.h)
   AC_CACHE_CHECK([whether mkdir fails due to a trailing slash],
     gl_cv_func_mkdir_trailing_slash_bug,
     [
@@ -14,6 +20,9 @@ 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");