965a50dcea
The C90 flags were only the "89" versions until GNU 4.5. The C11 flags were not introduced until GNU 4.6.
49 lines
1.6 KiB
CMake
49 lines
1.6 KiB
CMake
include(Compiler/GNU)
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__compiler_gnu(C)
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if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5)
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set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
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set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")
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elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
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set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c89")
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set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu89")
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endif()
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if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
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set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99")
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set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99")
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endif()
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if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7)
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set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11")
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set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
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elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
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set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c1x")
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set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu1x")
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endif()
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if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
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set(CMAKE_C_STANDARD_DEFAULT 11)
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else()
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set(CMAKE_C_STANDARD_DEFAULT 90)
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endif()
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macro(cmake_record_c_compile_features)
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macro(_get_gcc_features std_version list)
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record_compiler_features(C "${std_version}" ${list})
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endmacro()
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set(_result 0)
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if (UNIX AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
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_get_gcc_features(${CMAKE_C11_STANDARD_COMPILE_OPTION} CMAKE_C11_COMPILE_FEATURES)
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endif()
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if (UNIX AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
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if (_result EQUAL 0)
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_get_gcc_features(${CMAKE_C99_STANDARD_COMPILE_OPTION} CMAKE_C99_COMPILE_FEATURES)
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endif()
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if (_result EQUAL 0)
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_get_gcc_features(${CMAKE_C90_STANDARD_COMPILE_OPTION} CMAKE_C90_COMPILE_FEATURES)
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endif()
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endif()
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endmacro()
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