message: Add c++11 option
diff: ##############################################################################################
  +set(MY_CXX_WARNING_FLAGS " -Wall -pedantic -W")
  +
  +if("${CMAKE_VERSION}" VERSION_GREATER 3.1.0)
  + set(CMAKE_CXX_STANDARD 11)
  + set(CMAKE_CXX_STANDARD_REQUIRED ON)
  +else()
  + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
  + set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -std=c++11")
  + set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} -std=c++11")
  + set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -std=c++11")
  + set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -std=c++11")
  +endif()
  +
  include_directories(
  ${HDLCONVERTOR_SOURCE_DIR}/src
  )
  