The QT C++ extensions supports only Microsoft's C++Tools as debugger. However, it is available only for official VSCode builds:

https://github.com/microsoft/vscode-cpptools/issues/6388

This means open source builds, e.g. the VSCode builds provided by major Linux operating systems, won't have access to such debugger.

The closest alternative is this:

https://open-vsx.org/extension/KylinIdeTeam/cppdebug

However, source code is not available (see my request https://gitee.com/quanzhuo/cpp-debug/issues/ID1YAJ).

Thus I would like CodeLLDB to be supported as it is available for both official and open-source builds of VSCode.

Please feel free to ask questions if you need additional information.