nwcc is a small C compiler for Unix systems under the BSDL The primary goals of nwcc currently are portability and correctness. Various C99 and GNU C features are also supported. It works with FreeBSD/OpenBSD/Solaris/Linux on 80x86, FreeBSD/Linux on AMD64, Solaris on SPARC, AIX on PowerPC, and IRIX on MIPS hardware. Cross-compilation is also supported. The x86 and AMD64 backends support two assemblers; nasm/yasm and gas. This can be useful for side-by-side assembler syntax comparison WWW: http://nwcc.sourceforge.net/