--- CMakeLists.txt.orig	2016-11-23 22:19:24 UTC
+++ CMakeLists.txt
@@ -1,6 +1,6 @@ project(perceptualdiff)
 project(perceptualdiff)
 
-cmake_minimum_required(VERSION 2.4)
+cmake_minimum_required(VERSION 3.5)
 
 add_library(
     pdiff