So I've had a deeper look and tried to compile GCC (10) under MorphOS. Then I ran into the same libstdc++ problem. That stubborn thing really doesn't want to compile natively. We could hack the configure to make it think it's crosscompiling (the only way to disable dlopen dependency there without bigger changes), but don't think it's worth it. I'll look into making sure the thing is relatively easy to cross-compile but that's it.