--- lemon-1.3.1/CMakeLists.txt.orig	2014-07-08 14:22:38.225366435 -0700
+++ lemon-1.3.1/CMakeLists.txt	2014-07-08 14:22:56.331478072 -0700
@@ -1,6 +1,8 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 
-CMAKE_POLICY(SET CMP0048 OLD)
+IF(POLICY CMP0048)
+  CMAKE_POLICY(SET CMP0048 OLD)
+ENDIF(POLICY CMP0048)
 
 SET(PROJECT_NAME "LEMON")
 PROJECT(${PROJECT_NAME})