How to Configure IntelliSense in VS Code Server on a BeagleBone Black Running Debian 12.11?

I’m using a BeagleBone Black and have just installed Debian 12.11.
I tested VS Code Server to develop a C++ project.
It works well, and I’m able to build my project.
However, I can’t get IntelliSense to work, which is a deal-breaker.
Has anyone managed to configure VS Code Server to enable this feature?
Thanks for your help.