# Generate new gn json files and moz.build files for building libwebrtc in our tree
/!\ This is only supported on Linux and macOS. If you are on Windows, you can run
the script under [WSL](
https://docs.microsoft.com/en-us/windows/wsl/install).
1. The script should be run from the top directory of our firefox tree.
```
./mach python python/mozbuild/mozbuild/gn_processor.py dom/media/webrtc/third_party
_build/gn-configs/webrtc.json
```
2. Checkin all the generated/modified files and try your build!
# Adding new configurations to the build
Edit the `main` function in the `python/mozbuild/mozbuild/gn_processor.py` file.
