There is some stuff on using the FFI under "Collaborative documentation" at http://haskell.org/haskellwiki/GHC. The FFI link takes you to http://haskell.org/haskellwiki/GHC/Using_the_FFI It's called "collaborative" because it's When you solve your problem, can I urge you to update that page (its a wiki) to embody what you have learned? Simon | -----Original Message----- | From: haskell-cafe-bounces@haskell.org [mailto:haskell-cafe-bounces@haskell.org] On | Behalf Of Chris Eidhof | Sent: 02 November 2009 10:22 | To: Manuel M T Chakravarty | Cc: Haskell Cafe | Subject: Re: [Haskell-cafe] Bulding a library for C users on OS X | | On 2 nov 2009, at 03:30, Manuel M T Chakravarty wrote: | | > Chris Eidhof: | >> I'm trying to call a Haskell function from C, on OS X. There's an | >> excellent post [1] by Tomáš Janoušek that explains how to do this | >> on Linux. However, on OS X, it's different. First of all, it looks | >> like the -no-hs-main flag is ignored, because I get the following | >> error: | >> | >> > ghc -O2 --make -no-hs-main -optl '-shared' -optc '- | >> DMODULE=Test' -o Test.so Test.hs module_init.c | >> > [1 of 1] Compiling Main ( Test.hs, Test.o ) | >> > | >> > Test.hs:1:0: The function `main' is not defined in module `Main''' | > | > The flag -no-hs-main is a link-time flag that allows you to link | > without a main function, but you are getting a compile time error. | > It's as if you try to export main, but don't define it. | > | > Have you had a look at | http://www.haskell.org/ghc/docs/latest/html/users_guide/ffi-ghc.html#foreign... | ghc | > ? | | | Interesting! I didn't see that section before, thanks a lot. | | -chris | | _______________________________________________ | Haskell-Cafe mailing list | Haskell-Cafe@haskell.org | http://www.haskell.org/mailman/listinfo/haskell-cafe