| enable_language(CXX) |
| |
| if (NOT ";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";gnu_cxx_typeof;" |
| AND NOT ";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";msvc_cxx_sealed;" ) |
| # Simulate passing the test. |
| message(SEND_ERROR |
| "The compiler feature \"gnu_cxx_dummy\" is not known to CXX compiler\n\"GNU\"\nversion 4.8.1." |
| ) |
| return() |
| endif() |
| |
| if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";gnu_cxx_typeof;") |
| set(feature msvc_cxx_sealed) |
| if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";msvc_cxx_sealed;") |
| # If a compiler supports both extensions, remove one of them. |
| list(REMOVE_ITEM CMAKE_CXX_COMPILE_FEATURES msvc_cxx_sealed) |
| endif() |
| else() |
| set(feature gnu_cxx_typeof) |
| endif() |
| |
| add_executable(main empty.cpp) |
| |
| target_compile_features(main |
| PRIVATE |
| ${feature} |
| ) |
