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28 lines
930 B
28 lines
930 B
5 years ago
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enable_language(C)
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function(check_language_feature_flags lang level)
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if(CMAKE_${lang}${level}_STANDARD_COMPILE_OPTION)
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#this property is an internal implementation detail of CMake
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get_property(known_features GLOBAL PROPERTY CMAKE_${lang}${level}_KNOWN_FEATURES)
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list(LENGTH known_features len)
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if(len LESS 1)
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message(FATAL_ERROR "unable to find known features of ${lang}${level}")
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endif()
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string(TOLOWER ${lang} lang_lower)
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set(known_name ${lang_lower}${level}_known_features)
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set(meta_name ${lang_lower}${level}_meta_feature)
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add_library(${known_name} STATIC a.c)
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target_compile_features(${known_name} PUBLIC ${known_features})
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add_library(${meta_name} STATIC a.c)
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target_compile_features(${meta_name} PUBLIC ${lang_lower}_std_${level})
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endif()
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endfunction()
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check_language_feature_flags(C 90)
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check_language_feature_flags(C 99)
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check_language_feature_flags(C 11)
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