Is it easy to get all the correct aarch64 headers for OpenGL and X11? That's where I ran into issues on Arch and started looking for alternatives. Most articles seem to think cross-compiling isn't worth the effort.
Isn't that handled by multiarch support?
Not sure. Multiarch looks like a debian thing and I haven't used a debian system in many years. That might be a good way to go for a build VM anyway though.