enforcing c++11

CMakeLists.txt

@@ -1,12 +1,24 @@
 # Defines the CMake commands/policies
 cmake_minimum_required(VERSION 3.0.0)
 
+
+
 # Make the scripts available in the 'cmake' directory available for the
 # 'include()' command, 'find_package()' command.
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
 
 # Setup the project
 project(pyne)
+
+# check for and enable c++11 support
+INCLUDE(CheckCXXCompilerFlag)
+CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
+IF(COMPILER_SUPPORTS_CXX11)
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+ELSE()
+    MESSAGE(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
+ENDIF()
+
 include(PyneMacros)
 pyne_print_logo()  # Beware of dragons
 pyne_set_platform()