The loop-block optimization say it needs cloog + ppl for graphite -- but I saw an email from July 2012, Jonathan Wakely, that says the trunk was using isl, so ppl wasn't needed. Does that imply that 5 years later, what was in trunk might be in the mainstream releases? I.e. what, besides cloog is needed, "today" for building the graphite optimizers, ppl or isl? If isl, should the manpage text for loop-block saying that ppl is required be updated? tnx, -linda