8ed59fc207
This can be used to set the compiler features required by particular targets. An error is issued at CMake time if the compiler does not support the required feature. If a language dialect flag is required by the features used, that will be added automatically. Base the target_compile_features command on cmTargetPropCommandBase. This gives us 'free' handling of IMPORTED, ALIAS, INTERFACE, non-compilable and missing targets.
27 lines
758 B
CMake
27 lines
758 B
CMake
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if (NOT ";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";gnu_cxx_typeof;"
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AND NOT ";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";msvc_cxx_sealed;" )
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# Simulate passing the test.
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message(SEND_ERROR
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"The compiler feature \"gnu_cxx_dummy\" is not known to compiler\n\"GNU\"\nversion 4.8.1."
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)
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return()
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endif()
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if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";gnu_cxx_typeof;")
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set(feature msvc_cxx_sealed)
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if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";msvc_cxx_sealed;")
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# If a compiler supports both extensions, remove one of them.
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list(REMOVE_ITEM CMAKE_CXX_COMPILE_FEATURES msvc_cxx_sealed)
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endif()
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else()
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set(feature gnu_cxx_typeof)
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endif()
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add_executable(main empty.cpp)
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target_compile_features(main
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PRIVATE
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${feature}
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)
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