I pulled this from the Apple Discussions
I was very close
Now I think I shall trust cpan a little bit more
Followed instructions at http://www.saladwithsteve.com/osx/2003_11_01_archive.html, modified by tip at OSXhints.com
perl Makefile.PL –testuser=root
perl -pi -e’s/MACOSX/env MACOSX/’ Makefile
At this point, edit Makefile to remove all instances of -arch i386
make
make test
make install