Compiler doesn't detect changes in C++ header files

Hi,


Using the Xcode 10 "new build" system, if, after a successful build, you change a C++ header file contents - Xcode will not detect the change and will not perform the required compilation. Already mentioned in the Apple developers forum: https://forums.developer.apple.com/thread/109826


Using Version 10.0 (10A255)

This is a critical issue, already reported through the Feedback Assistant as FB6593303 since Jul 10, with no initial response from Apple.


Any suggestions?

Thanks,

Gil Moses.