Binutils/gcc cross-compiler can be built rather quickly, once you know the right configure flags for each. Then it's just make && make install. You can speed th

Binutils/gcc cross-compiler can be built rather quickly, once you know the right configure flags for each. Then it's just make && make install. You can speed the buil considerably by building with -g0 and not doing a bootrstrap or building needless targets. Then you have a cross-compiler in some --prefix that you can point the kernel build system to via some environment variables and you're done. It's a well known process. It's basically built just like any other dependency and doesn't take much time. Hardly a nightmare. If it would be possible to just add rust to the list of gcc languages, that would indeed be very easy.