Hello Frederico, Thursday, February 09, 2006, 5:08:12 AM, you wrote: FF> I'm developping a package wich imports C functions. it depends on the details of your use. things go far away from the times where FFI addendum was published, but there is no good docementation, afaik. first, there are a number of FFI-helper packages, that are directed to simplify use of additional features, such as importimg constans, enums, structures, i.e. things not in FFI standard second, GHC nowadays can much easier use C functions. i personally do the following: ghc -c module.c ghc --make main.hs module.o and use module.h with usual declarations of function types while the main.hs contains import staements like the foreign import ccall unsafe "module.h __w_stat_ctime" wst_ctime :: Ptr CWStat -> IO CTime foreign import ccall unsafe "module.h __w_stat_atime" wst_atime :: Ptr CWStat -> IO CTime here< C functions __w_stat_ctime and __w_stat_ctime imported with giving them in Haskell program names wst_ctime and wst_atime. hope it will help. if not - give us additional details about your usage of FFI. -- Best regards, Bulat mailto:bulatz@HotPOP.com