include_guard(GLOBAL) set(_policies CMP0020 CMP0022 CMP0058 CMP0028 CMP0042 CMP0063 CMP0053 CMP0011 CMP0054 CMP0012 CMP0069 CMP0063 ) foreach(k ${_policies}) if(POLICY ${k}) cmake_policy(SET ${k} NEW) endif() endforeach()