CMAKE 3.19 - cmake_check_compiler_flag doesn't pass along CMAKE_REQUIRED_FLAGS, etc.

It seems that with 3.19, check_c_compiler_flag no longer respects CMAKE_REQUIRED_FLAGS.

check_c_compiler_flag -> cmake_check_compiler_flag

It looks like there are two implementations of cmake_check_compiler_flag one in Modules/Internal/CheckCompilerFlag.cmake and the other in Modules/Internal/CMakeCheckCompilerFlag.cmake.

If the version on CMakeCheckCompilerFlag.cmake wins than CMAKE_REQUIRED_FLAGS and related aren’t respected. Is this expected behavior?

And if so how do you control which version of cmake_check_compiler_flag gets pulled in?

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