mark_as_advanced(CMAKE_OSX_ARCHITECTURES CMAKE_OSX_DEPLOYMENT_TARGET CMAKE_OSX_SYSROOT)

if(CMAKE_OSX_DEPLOYMENT_TARGET AND CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS "10.7")
  message(FATAL_ERROR "Minimum OS X deployment target is 10.7, please update CMAKE_OSX_DEPLOYMENT_TARGET.")
endif()