gmp loads when installed from http://R.research.att.com; however,
running some of the functions (nextprime(), factorize()) in the
library crashes R, something that has never happened to me when using
R before (5+ years of experience on Mac, Windows, and Linux). The
function isprime() works OK. I have not tried anything else in the
library. (I have installed Xcode 2.2.1, and as I noted before I
installed the most recent GNU MP library).
TAC