d0af0faefb
The __STDC_VERSION__ macro may be defined or not depending on the implementation dialect of C. Test that it is defined before testing its value. The CXX tests do not need such a change because they define __cplusplus in all dialects.
12 lines
590 B
CMake
12 lines
590 B
CMake
|
|
set(_cmake_oldestSupported "((__clang_major__ * 100) + __clang_minor__) >= 304")
|
|
|
|
set(Clang_C11 "${_cmake_oldestSupported} && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L")
|
|
set(_cmake_feature_test_c_static_assert "${Clang_C11}")
|
|
set(Clang_C99 "${_cmake_oldestSupported} && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L")
|
|
set(_cmake_feature_test_c_restrict "${Clang_C99}")
|
|
set(_cmake_feature_test_c_variadic_macros "${Clang_C99}")
|
|
|
|
set(Clang_C90 "${_cmake_oldestSupported} && !defined(__STDC_VERSION__)")
|
|
set(_cmake_feature_test_c_function_prototypes "${Clang_C90}")
|