I've been out of the loop for a while, but I am about to start hacking on sparc bits again and did an HG update only to find that configure fails: configure: error: no version of addcnd_n found in path: sparc64/ultrasparct3 sparc64/ultrasparct1 sparc64 generic I seem to vaguely remember a discussion about providing nc vs. non-nc versions of various routines.