I have a "Raspberry Pi" mini computer, which runs a Debian derivate. It comes with GCC and perl, and I guess that it was also gcc that compiled the perl.

Executables (and object files) must be compiled for ARM; i386/x64 executables don't run on ARM, and vice versa.

Cross compilation is (as far as I can tell) possible, but a hassle.

tl;dr: ARM is pretty much mainstream for linux.