🚀 go-pugleaf

Can someone help me with this? I have a function f(..) called in main(),
and it resides in file g.c, also in libtest.a

When I specify gcc main.c g.o -ltest, I want it to pickm the definition
of f(..) from g.c, instead of libtest.a. When I just say 
gcc main.c -ltest, I would like the defintion from libtest.a

I keep getting errors saying "multiply defined function name". It used
to work with cc, and also I heard it works with gcc. Do I have to
specify some other option for linking?

Thanks
Dinkar.