CLion project fails to compile after update to Xcode 11

I am now getting errors such as 

fatal error: 'CoreFoundation/CoreFoundation.h' file not found

did not find header 'CoreFoundation.h' in framework 'CoreFoundation' (loaded from '/System/Library/Frameworks'

I've seen some clues about clang version, or missing link to '/System/Library/Frameworks' but I want to be sure before I start messing with things under the hood. 

Thanks