[Haskell-cafe] building a FFI library with cabal

Hi, I'm trying to create an FFI library to CHOLMOD ( http://www.cise.ufl.edu/research/sparse/cholmod/) but am having problems. My project is here: github.com/tdox/hcholmod. I can link an executable with the build script in the examples directory (line 4). But line 7 does not work (I get undefineds for functions that are in cholmod.a. Also, I can't build example1 with cabal. (Uncommenting the -- lines in hcholmod.cabal results is similar undefineds.) I would appreciate any help or hints. Thanks, Tad