Hi @rsacchettini,
Clang is a double-sided sword. If it works, it gives you fantastic insight in your code - but if not, you often have no idea why.
I'd recommend you nevertheless to start an own discussion topic here, we might be able to help you get it at least running. Can you at least work on a small example project?
Also note that the CMake integration is in flow currently, so there might be regressions in .0 releases. You might want to try the last stable or the next snapshot release.
Regards
Edit: Ah, you alread did: https://forum.qt.io/topic/111067/symbols-parsing-and-finding-stops-working-qtcreator-v4-11-0-cmake-on-linux-x64