require C++ 11 using set(CMAKE_CXX_STANDARD 11)

Author: michaeldsmith

CMakeLists.txt

@@ -2,6 +2,8 @@ cmake_minimum_required(VERSION 3.1)
 project(CTL VERSION 1.5.2)
 include(GNUInstallDirs)
 
+set(CMAKE_CXX_STANDARD 11)
+
 set(CMAKE_MODULE_PATH
 	"${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
 	${CMAKE_MODULE_PATH}