https://v8.dev/docs/build
https://v8.dev/docs/build-gn
fetch v8
gclient sync
gn gen out/foo --args='is_debug=false target_cpu="x64" v8_target_cpu="arm64" use_goma=true'
For an overview of all available gn arguments, run:
```bash`
gn args out/foo --list
```bash
ninja -C out/x64.release
```