@Hans
I'm a bit tied up with family stuff at the moment but I can check that for you - I think I did compile RayLib (from the source of afxgroup) natively on the Amiga. If that's true and I'm remembering correctly, then with a cmake that also runs natively the tutorial should work. Of course that does depend on the fetch functionality being implemented and working.
As always, I've been sidetracked, and it's not desperately on-topic for this thread anyway, but there was a specific area of functionality that didn't work for me in the current build of Raylib on OS4. I can't remember if it was 3D generally (I don't think so), or shaders. In which case it could well have been that the project I was building was using incompatible shader code to the version supported by OS4 / Raylib.
Like I say, need to get back up to speed after my holidays (not school holidays, so a couple weeks)
[EDIT] Of course, a Raylib that has some specific things that don't work is still ok for the tutorial. Provided those things are not used in the tutorial
Not perfect but not really a problem.