When compiling a haskell source file via ghc --make foo.hs GHC always leaves behind a variety of intermediate files other than foo.exe. These are foo.hi and foo.o.
I often end up having to delete the .hi and .o files to avoid cluttering up the folders.
Is there a command line option for GHC not to leave behind its intermediate files? (When asked on #haskell, the best answer I got was ghc --make foo.hs && rm foo.hi foo.o.
I've gone through the GHC docs a bit, and there doesn't seem to be a built-in way to remove the temporary files automatically -- after all, GHC needs those intermediate files to build the final executable, and their presence speeds up overall compilation when GHC knows it doesn't have to recompile a module.
However, you might find that setting the -outputdir option will help you out; that will place all of your object files (.o), interface files (.hi), and FFI stub files in the specified directory. It's still "clutter," but at least it's not in your working directory anymore.
