cmake HAS_CXX11_FLAG examples

OpenPHDGuiding/phd2 cmake_modules/compiler_options.cmake :64 

check_cxx_compiler_flag(-std=c++11 HAS_CXX11_FLAG)

Jackarain/proxy third_party/boost/libs/test/build/CMakeLists.txt :37 

check_cxx_compiler_flag(-std=c++11 HAS_CXX11_FLAG)

patrikhuber/superviseddescent CMakeLists.txt :11 

check_cxx_compiler_flag(-std=c++11 HAS_CXX11_FLAG)

yyzybb537/libgo third_party/boost.context/libs/test/build/CMakeLists.txt :37 

check_cxx_compiler_flag(-std=c++11 HAS_CXX11_FLAG)