I did a mv /usr/local/pgsql/lib/libpq.dylib /usr/local/pgsql/lib/libpq.dylib.old and got a 1.3 mb universal binary of libpq.a from another machine and it installed. The binary originally came from http://basetenframework.org/ but I am told you can get one here too: www.postgresqlformac.com in the developers pack.