gcc -o c4 c4.c  (you may need the -m32 option on 64bit machines)./c4 hello.c./c4 -s hello.c./c4 c4.c hello.c./c4 c4.c c4.c hello.c

c4x86 - JIT compiler for x86 in 86 lines

gcc -m32 c4x86.c -o c4x86./c4x86 hello.c./c4x86 c4.c hello.c