Fabrice Bellard's "tiny cc"[0] is a great sweet spot between "not even a portable assembler" like CC500 and C4, and GCC/LLVM: It is a full-blown C compiler wit

Fabrice Bellard's "tiny cc"[0] is a great sweet spot between "not even a portable assembler" like CC500 and C4, and GCC/LLVM: It is a full-blown C compiler with enough extensions to compile the Linux kernel (and boot to it directly - look at the "tccboot" project). But it's also small enough and simple enough to retarget in a few days work (make that a few month if you want optimizations ... but you don't seem to). [0] http://bellard.org/tinycc http://bellard.org/tinycc