R help - Jun 2004 - rcmd with a libgsl.a

Dear all, I'm new to R and am trying to create a dll in order to be able to 
use the "dyn.load".
I work with some examples and its works fine.

Now, I would like to create a dll that use a lib (libgsl.a). I have linked 
its in
a main c program and its works fine  too. How can I instruct rcm ... to 
include this lib???

The .h file is in mingw\include\gsl and I put #include <gsl/gsl_cdf.h> in 
the C code. The libgsl.a is in mingw\lib.



Best regards.