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37 lines
1.4 KiB
37 lines
1.4 KiB
7 years ago
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set(CMake_CXX17_BROKEN 0)
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if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
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if(NOT CMAKE_CXX17_STANDARD_COMPILE_OPTION)
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set(CMake_CXX17_WORKS 0)
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endif()
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if(NOT DEFINED CMake_CXX17_WORKS)
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message(STATUS "Checking if compiler supports needed C++17 constructs")
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try_compile(CMake_CXX17_WORKS
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${CMAKE_CURRENT_BINARY_DIR}
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${CMAKE_CURRENT_LIST_DIR}/cm_cxx17_check.cpp
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CMAKE_FLAGS -DCMAKE_CXX_STANDARD=17
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OUTPUT_VARIABLE OUTPUT
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)
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if(CMake_CXX17_WORKS AND "${OUTPUT}" MATCHES "error: no member named.*gets.*in the global namespace")
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set_property(CACHE CMake_CXX17_WORKS PROPERTY VALUE 0)
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endif()
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if(CMake_CXX17_WORKS)
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message(STATUS "Checking if compiler supports needed C++17 constructs - yes")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if compiler supports needed C++17 constructs passed with the following output:\n"
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"${OUTPUT}\n"
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"\n"
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)
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else()
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message(STATUS "Checking if compiler supports needed C++17 constructs - no")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if compiler supports needed C++17 constructs failed with the following output:\n"
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"${OUTPUT}\n"
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"\n"
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)
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endif()
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endif()
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if(NOT CMake_CXX17_WORKS)
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set(CMake_CXX17_BROKEN 1)
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endif()
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endif()
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