Recently I flashed coreboot + tianocore into my thinkpad x220 and I was having some issues to compile it on my Fedora 32. So I used docker to run an older version of the ubuntu to make it compile flawlessly.
Here is what I had to do, so inside my coreboot directory I ran the command:
docker run -it -v /home/loop0/Code/coreboot-4.12:/coreboot:z ubuntu:18.04 /bin/bash
Once inside bash I had to install a few packages:
apt-get update
apt-get install gnat build-essential libssl-dev pkg-config git flex bison libncurses5-dev wget zlib1g-dev uuid-dev nasm python
Then to proceed on the compilation:
cd /coreboot
make crossgcc-i386 CPUS=8
make -j8
At the end of the process if everything goes well you should have a file called coreboot.rom inside the build folder. That’s it, you’re ready to flash the new bios and make your laptop a little more free.