message: Test compiler to decide to add -std=c++11 option
  Copied from renderdoc cmake configuration
diff: @@ -108,6 +108,11 @@ set(SRC main.cpp
  linux/linux_window.cpp)
  project(demos)
  +
  +if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
  +endif()
  +
  add_executable(demos ${SRC} ${VULKAN_SRC} ${OPENGL_SRC})
  install(TARGETS demos DESTINATION .)
  