
We need to regenerate the docs if any of the rst-files are changed. So let's add a simple extension to generate a depfile, so meson will pick up any changes needed. Reviewed-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Eric Engestrom <eric@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11494>