Troubles with mpi libraries

I've run into a tree at testMemory. Its wasn't linking, so I played around with this manually:

gcc -pipe -Wall -g -DDEBUG -O0 -o /home/cjoneill/StGermain/build/tests/testMemory1 /home/cjoneill/StGermain/build/tmp/test-libStGermainBaseFoundation/JournalWrappers.o -I/home/cjoneill/StGermain/build/include -I/home/cjoneill/StGermain/build/include/StGermain -I/opt1/site-sparc-sol8/mpich/include testMemory1.c /home/cjoneill/StGermain/build/lib/libStGermainBaseFoundation.a -L/opt1/site-sparc-sol8/mpich/lib -lmpich -lm

So this looks ok. But I'm getting the:

Undefined first referenced
symbol in file

-this usually means that a symbol is created somewhere (in a .h file) but no definition was made for it (in a .c file). This sounds to me like I haven't included something, but can't imagine what.
Funny thing is, I can compile it mpicc, with the option mpicc -cc=gcc.
(some of the options are a little funky without specifying gcc).
There is only one warning:
gcc: /home/cjoneill/StGermain/build/lib/libStGermainBaseFoundation.a: linker input file unused because linking not done
(why was linking not done? Sounds dodgy). Yet it compiles something that runs.