Qt Creator C++20 module autocompletion / clang parser

[Max.S12]

Hi,

I'm trying to get C++20 modules to work with Qt Creator. I got it to compile with CMake 3.20.2 but the Qt Creator Editor integration is not working 100%. I cant autocomplete exported stuff and clang can't find any imported module. I tried with a modmap and different clang flags but the best result was a message from the parser: "can't build module xxx".

Is there a way to get this to work or is this just not supported by QT Creator 4.15?

For people who want to compile their Qt Project with C++ modules and CMake:
CMakeList (tested with gcc 11.1)

cmake_minimum_required(VERSION 3.20)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_EXPERIMENTAL_CXX_MODULE_DYNDEP true)
target_compile_options(example PRIVATE -fmodules-ts)