9d767810e1
If no compiler feature information is known for a given compiler version, do not set a language standard default either. The two settings must be recorded consistently.
45 lines
1.5 KiB
CMake
45 lines
1.5 KiB
CMake
include(Compiler/Clang)
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__compiler_clang(CXX)
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if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
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set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden")
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endif()
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.0)
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set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
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set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
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endif()
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.1)
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# AppleClang 5.0 knows this flag, but does not set a __cplusplus macro greater than 201103L
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++1y")
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
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endif()
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.0)
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set(CMAKE_CXX_STANDARD_DEFAULT 98)
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endif()
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macro(cmake_record_cxx_compile_features)
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macro(_get_appleclang_features std_version list)
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record_compiler_features(CXX "${std_version}" ${list})
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endmacro()
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set(_result 0)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.0)
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set(_result 0)
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if(CMAKE_CXX14_STANDARD_COMPILE_OPTION)
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_get_appleclang_features(${CMAKE_CXX14_STANDARD_COMPILE_OPTION} CMAKE_CXX14_COMPILE_FEATURES)
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endif()
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if (_result EQUAL 0)
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_get_appleclang_features(${CMAKE_CXX11_STANDARD_COMPILE_OPTION} CMAKE_CXX11_COMPILE_FEATURES)
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endif()
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if (_result EQUAL 0)
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_get_appleclang_features(${CMAKE_CXX98_STANDARD_COMPILE_OPTION} CMAKE_CXX98_COMPILE_FEATURES)
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endif()
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endif()
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endmacro()
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