## 4. The build configuration that must accompany the source

Verbatim from `packages/ffmpeg.cmake` at recipe revision `8ddbe5472465`, the
licence-determining flags:

```
--disable-gpl  --disable-nonfree  --enable-version3
--enable-static  --disable-shared
```

and from `packages/mpv.cmake`:

```
-Dgpl=false  -Dlibmpv=true  --default-library=shared  --prefer-static
```

Toolchain: LLVM/clang mingw-w64 cross-compile, `--target-os=mingw32`,
`--arch=x86_64`, built on `ubuntu-latest` inside `ghcr.io/shinchiro/archlinux:latest`.

The full flag list (several hundred `--enable-decoder=` lines) is in the recipe
archive above; publishing the archive is what satisfies "the scripts used to
control compilation".