[Haskell] compiling under osx

hi im a first year computer science student, and we are currently learning haskell. We have recently begun to learn the IO functions and to compile programs. The problem i have is that when i execute the command ghc -o <exe-name> <name>.hs it is supposed to produce two files, when i do it <exe-name> is not produced. i am running under osx 10.3.9, and do not understand why this is happening, any help would be greatly appreciated. cheers Eli Jordan