avoid gcc warnings about unused macro definitions

[gnulib.git] / m4 / unlinkdir.m4

diff --git a/m4/unlinkdir.m4 b/m4/unlinkdir.m4
index 9ec7e08..0c84375 100644 (file)
--- a/m4/unlinkdir.m4
+++ b/m4/unlinkdir.m4
@@ -1,6 +1,6 @@
-#serial 4
+# serial 6
 
-# Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -11,7 +11,7 @@
 AC_DEFUN([gl_UNLINKDIR],
 [
   AC_REQUIRE([AC_CANONICAL_HOST])
-  AC_CHECK_HEADERS_ONCE(priv.h)
+  AC_CHECK_HEADERS_ONCE([priv.h])
 
   AC_LIBOBJ([unlinkdir])
 
@@ -23,11 +23,11 @@ AC_DEFUN([gl_UNLINKDIR],
   # and might create garbage in the file system,
   # so the code below simply relies on the kernel name and version number.
   case $host in
-  *-*-gnu[0-9]* | \
+  *-*-gnu[[0-9]]* | \
   *-*-linux-* | *-*-linux | \
-  *-*-freebsd2.2* | *-*-freebsd[3-9]* | *-*-freebsd[1-9][0-9]* | \
+  *-*-freebsd2.2* | *-*-freebsd[[3-9]]* | *-*-freebsd[[1-9]][[0-9]]* | \
   *-cygwin)
-    AC_DEFINE([UNLINK_CANNOT_UNLINK_DIR], 1,
+    AC_DEFINE([UNLINK_CANNOT_UNLINK_DIR], [1],
       [Define to 1 if unlink (dir) cannot possibly succeed.]);;
   esac
 ])