Mark, I have tried several of the available methods. Greencard works pretty well for most things, but these days I use straight ffi (with CForeign libs that come with ghc) and code it myself. It turned out to be a lot less difficult then I imagined to marshall simple structures and arrays back and forth. CHeers!

From: Mark Conway Wirt To: glasgow-haskell-users@haskell.org Subject: FFI

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