RE: Doubts in GHC

I´m new in this list and I think that it´s a very good idea, because we can show our doubts. I have a doubt in GHC: How can we include a folder in the compiling process? Example: If one file called main.hs requires some others modules that are in one folder, how can compile it in GHC and include this folder?

ghc --make -i<folder> main.hs Cheers, Simon