Problem

When the terminal is not in focus, there is no way to know the progress state of the compilation.

Proposed Solution

There exist escape codes that allow control of a "progress meter", that for example is shown on the taskbar in Windows.
Winget uses them, and the implementation can be seen at https://github.com/microsoft/winget-cli/blob/master/src/AppInstallerCLICore/VTSupport.cpp. It mostly consists of adding the correct progress number, and clean up after the end.

Notes

I volunteer to make this change to this repo.