[gambit-list] OS X 10.6 "Building Loadable Library" example

Hi, I've been trying the "Building Loadable Library" m1/m2/m3 example (pg 16 of pdf manual). I'm getting the following error: $ gcc -bundle m1.o m2.o m3.o foo.o1.o -o foo.o1 -L/opt/local/lib/gambit-c -lgambc -I/opt/local/include ld: duplicate symbol ____G_cons in /opt/local/lib/gambit-c/libgambc.a(_gambc.o) and foo.o1.o collect2: ld returned 1 exit status Also, after this works, can I do something like the following: $gsi

(load "foo.o1") (map twice '(5))

Thanks, -Dave