- All included (apart from SoftMAC maybe?)
Here’s the best way to do it all:
- sudo apt-get install build-essential git
- git clone GitHub - osmc/osmc: OSMC (Open Source Media Center) is a free and open source media center distribution
- cd package/kernel-osmc/
- You’ll see rbp1/rbp2 patch for adding the config.
- Edit the config, and run diff -u /dev/null .config > rbp1/rbp2-… Edit the patch and add b/.config instead of just .config.
- Run make rbp1 or make rbp2 and check it builds OK. dpkg -i rbp1/rbp2-image…*.deb to verify it works.
- Submit pull request.
I understand this is brief, but you’ll likely work it out 
Edit: just refreshed my memory, if build for a Pi Zero, you want rbp1, but I’d also like to see support added for rbp2/rbp3 if applicable.
Sam