Subcheck not working for cmake setups with multiple cmakelists.txt files

[Jerreeee]

Subcheck complains that the project hasnt properly set cxx20 and W4 settings because it only looks at your top level cmakelists.txt file. With the code in the 1st image (top level CMakeLists.txt) I get 0 issues. If I move those lines into my BubbleBobble cmakelists file then I do get the 1 issue (2nd image). So I do define the settings but subcheck just doesnt find them because it only checks the top level cmakelists file.