core2 not recognized

[Jay DeMarrais]

Downloaded 'latest version' 4.3.1 of gmp.

./configure fails on my system using cygwin (32 bit machine with processor 
Intel Core2 Duo Cpu).  It reports:

-pc' not recognizede 'core2.. Invalid configuration 'core2
-pc-cygwin failed /bin/sh ./confure.sub core2

I was a bit surprised this wasn't a 'known problem'.  I can't have the only 
core2 machine???

I am trying ./configure --build=i386.  I have no idea if this is correct 
however.