Does that also apply to platforms where you as a consultant for hire does not have access to a C compiler for that given platform? It used to be an issue that

Does that also apply to platforms where you as a consultant for hire does not have access to a C compiler for that given platform? It used to be an issue that non-free UNIXes did not include a C-compiler by default, and then C would really not help. I am not sure if that is the case anymore.