Switch back to using -std=c++11 instead of CMAKE_CXX11_STANDARD_COMPILE_OPTION, since CMAKE_CXX11_STANDARD_COMPILE_OPTION doesn't work properly with Clang on OS X.
Switch back to using -std=c++11 instead of CMAKE_CXX11_STANDARD_COMPILE_OPTION, since CMAKE_CXX11_STANDARD_COMPILE_OPTION doesn't work properly with Clang on OS X.

google/fruit,google/fruit,google/fruit