What is it? ======== A preprocessor and library which allow you to create dynamic libs from arbitrary annotated Haskell programs with one click. It also allows you to use the generated lib in C, C++ and C# just by including the generated header files. At a minimum it can be considered the inverse of c2hs. Where to get it? ============ You can get it from Hackage (http://hackage.haskell.org/package/Hs2lib) or by using cabal (cabal install Hs2lib). Documentation, Mailing List, Source, etc ======================= Go to http://mistuke.wordpress.com/category/hs2lib/ for information. What's New? ========= - Currently Supported: * Generates Marshaling information for arbitrary data types. Types with kind other then * have to be fully applied. (e.g. Maybe String). A specialized Marshaling instance is then generated for each of these instances. * Generates FFI exports for any function you mark, with FFI compatible type * Properly supports marshaling of lists. [Int] * Supports Ptr, FunPtr and StablePtr. Which introduces the possibility to have caches/sessions. * Supports Callbacks via Higher order functions (everything is auto generated from the function type) * Re-exports existing exports found in source file * Honors existing Storable instances found for types it needs * Avoids unsafePerformIO as much as possible, except for in one specific instance. * Generates Initialization functions for you * Hides unnecessary exports using a DEF file * Allows you to override default type conversions (e.g. String –> CWString) * Provides helper includes for C, C++ and C# (placed into wherever cabal places extra includes. %AppData%\cabal\Hs2lib-0.4.8 for windows) And more Details ===== A more detailed documentation will follow in the next few weeks. Why 0.4.8? -------------- This project has been in development for a very long time. Nearly two years on and off. It was developed mainly to facilitate the creation of Visual Haskell 2010. This is just the first public release of this tool.