Ok, scratch that last message, I got it built by: - cd gmp-2.0.2; make install-bsdmp (doesn't do this automatically :( ) - cd COW-3.00pl1; vi system.mk, add -lmp after -lgmp (LMP = -L/fs/scd/home0/rsc/lib -lgmp -lmp) So, disregard the previous message, I guess. Bob Campbell