commit 4b9c1ff9a8bb25a52559bba8e7e8e2482c012395
author Pierre Ossman <ossman@cendio.se> Mon Apr 04 13:17:38 2016 +0200
committer Pierre Ossman <ossman@cendio.se> Mon Apr 04 13:17:38 2016 +0200
tree ece0ebb962205b3d3546e2c0040b73b9df5be0ce
parent 6dd28d4d2791e4be684a8729285b6b2a8806f28d

Use cmake_policy() in a safe way

cmake_policy() by itself raises the minimum requirement on CMake.
We want it to be optional though, so add the necessary if() around
it.

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2759781..cd5a23b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,9 @@
 #
 
 cmake_minimum_required(VERSION 2.8)
-cmake_policy(SET CMP0022 OLD)
+if(POLICY CMP0022)
+  cmake_policy(SET CMP0022 OLD)
+endif()
 
 # Internal cmake modules
 set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)