From 08df1271c8ee220d7085cb4763ffeca3ea685e6d Mon Sep 17 00:00:00 2001
From: Dirk Thomas <dirk-thomas@users.noreply.github.com>
Date: Wed, 3 Jan 2018 14:02:16 -0800
Subject: [PATCH] explicitly enable CMake policy 42 to prevent warning

---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64d4523..d51e954 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,10 @@ if (NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
 endif()
 
+if(POLICY CMP0042)
+  cmake_policy(SET CMP0042 NEW)
+endif()
+
 # If compiler support symbol visibility, enable it.
 include(CheckCCompilerFlag)
 check_c_compiler_flag(-fvisibility=hidden HAS_VISIBILITY)