Ability to provide alternate timing implementation
diff --git a/library/timing.c b/library/timing.c
index 1b4311c..c70b78c 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -1,7 +1,7 @@
/*
* Portable interface to the CPU cycle counter
*
- * Copyright (C) 2006-2010, Brainspark B.V.
+ * Copyright (C) 2006-2014, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@@ -25,7 +25,7 @@
#include "polarssl/config.h"
-#if defined(POLARSSL_TIMING_C)
+#if defined(POLARSSL_TIMING_C) && !defined(POLARSSL_TIMING_ALT)
#include "polarssl/timing.h"