@thehive I pinged the api dev, no answer today, I'll try again tomorrow.
Regarding Daphne, i never tried to compile it. I see it uses SDL1, which saddens me quite much, but ok
Regarding configgen : most part of it is to setup controllers, eventually tweak some config file, but that's all. It's a real pain when config files are not documented, as it's some try'n'die progression to find out.
But I'd be glad to give you a hand for a "proper" integration, Buildroot is quite of a monster, we don't get that many contributors