It is often useful to compile the output C code with extra command line options. For instance, it can be quite useful to compile the SPU code through GCC with –fstack-check, which provides more robust stack checking code. –BEspuopt:<opt> (where is the option to pass onto SPU GCC, without the first -) allows us to pass these options on, for example to pass the –fstack-check option on SPU GCC we would use –BEspuopt:fstack-check.