message: CMAKE: CMAKE_CXX_EXTENSIONS=OFF
diff: @@ -92,9 +92,10 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build." FORCE)
  endif()
  -# Force C++11 and C99
  +# Force C++11 (No extensions) and C99
  set(CMAKE_CXX_STANDARD 11)
  set(CMAKE_CXX_STANDARD_REQUIRED True)
  +set(CMAKE_CXX_EXTENSIONS OFF)
  if(NOT MSVC)
  set(CMAKE_C_STANDARD 99)
  set(CMAKE_C_STANDARD_REQUIRED True)
  