> Where do I find the documentation for the FFI for GHC? I've read the > FFI report, the GHC user guide and scoured haskell.org but they all > gloss over what commands you actually need to give GHC and how to give > them. "foreign import blah blah" just gives me undefined references.
One well documented and compiler independent way to do that is to use Cabal packages: http://www.haskell.org/ghc/docs/latest/html/Cabal/authors.html as used on Hackage: http://hackage.haskell.org If you have never done that, you will take some time to understand the role of the setup file (which in your case will problably be something like: import Distribution.Simple; main=defaultMain) and the details of .cabal files. (The problem you are concerned with is detailed in 3.1.4: Build Information. You'll see you can also list C files to be compiled with your code, and if you are using some library that implements the pkg-config standard then everything is really, really easy. I advise you to also understand well how 'build-depends' works and how to list language features out of Haskell 98 — in your situation, at least 'extensions: ForeignFunctionInterface'.) Best, Maurício _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
