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50 lines
1.5 KiB
50 lines
1.5 KiB
include(Compiler/Clang)
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__compiler_clang(C)
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cmake_policy(GET CMP0025 appleClangPolicy)
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if(WIN32 OR (APPLE AND NOT appleClangPolicy STREQUAL NEW))
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return()
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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_C90_STANDARD_COMPILE_OPTION "-std=c90")
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set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")
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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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set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11")
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set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
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endif()
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if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4)
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if (NOT CMAKE_C_COMPILER_FORCED)
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if (NOT CMAKE_C_STANDARD_COMPUTED_DEFAULT)
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message(FATAL_ERROR "CMAKE_C_STANDARD_COMPUTED_DEFAULT should be set for ${CMAKE_C_COMPILER_ID} (${CMAKE_C_COMPILER}) version ${CMAKE_C_COMPILER_VERSION}")
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endif()
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set(CMAKE_C_STANDARD_DEFAULT ${CMAKE_C_STANDARD_COMPUTED_DEFAULT})
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elseif(NOT DEFINED CMAKE_C_STANDARD_DEFAULT)
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# Compiler id was forced so just guess the default standard level.
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if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.6)
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set(CMAKE_C_STANDARD_DEFAULT 11)
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else()
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set(CMAKE_C_STANDARD_DEFAULT 99)
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endif()
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endif()
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endif()
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macro(cmake_record_c_compile_features)
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set(_result 0)
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if (UNIX AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4)
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if (_result EQUAL 0)
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_record_compiler_features_c(11)
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endif()
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if (_result EQUAL 0)
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_record_compiler_features_c(99)
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endif()
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if (_result EQUAL 0)
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_record_compiler_features_c(90)
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endif()
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endif()
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endmacro()
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