@Karlos
Indeed. The only thing causing slight problems is the OpenGL. It might build with current public 68k MiniGL, but it wouldn't actually work correctly.
Other than that it should be rather easy, just grabbing the MorphOS port source from
http://bigfoot.morphos-team.net/files/ and adjusting it for AmigaOS and 68k.
You'd probably want to use a cross compiler system to build it though.