Add removed lines

Author: tresf

CMakeLists.txt

@@ -52,6 +52,7 @@ if(APPLE)
 		find_path(IOKit_INCLUDE_DIR NAMES IOKitLib.h HINTS ${IOKit_INC_SEARCH_PATH} ${IOKit_PKGC_INCLUDE_DIRS} PATH_SUFFIXES IOKit)
 		list(APPEND JSSC_ADDITIONAL_INCLUDES ${IOKit_INCLUDE_DIR})
 	endif()
+
 	# Handle edge-case with legacy versioned SDK headers (e.g. usr/include/c++/4.2.1)
 	if(CMAKE_OSX_SYSROOT)
 	    file(GLOB std_versions "${CMAKE_OSX_SYSROOT}/usr/include/c++/*")
@@ -67,6 +68,9 @@ if(APPLE)
 	endif()
 endif()
 
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
 # Statically link gcc/c++
 if(MSVC)
 	# /MT = Multithread, static version of the run-time library