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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 3.4)
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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 3.4)
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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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__compiler_check_default_language_standard(C 3.4 90 5.0 11)
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