Foreign Function Interface

Introduction

The Foreign Function Interface (FFI) allows you to link Haskell programs to programs written in another language.

Links

Select one of the following links for more information:

• FFI Introduction
• GHC manual: Writing Haskell interfaces to C code: hsc2hs
• haskell-ffi-tutorial at GitHub
• The official description: chapters 8 and 24 to 37 of The Haskell 2010 Language Report (a draft: The Haskell 98 Foreign Function Interface 1.0. An Addendum to the Haskell 98 Report)
• FFI cook book
• FFI complete examples
• GHC/Using the FFI
• Tackling the awkward squad
• fficxx, a Haskell-C++ Foreign Function Interface Generator
• Applications and libraries/Interfacing other languages
• Use another language to call a function; Haskell
• TABI a typeful tagged cross-language calling convention

Blog articles

• Dealing with fragile C libraries (e.g. MySQL) from Haskell
• Simple demonstration of Haskell FFI
• C and Haskell sitting in a tree…
• C2HS example: To save other people frustration
• Cxx foreign function interface; how to link to a C++ library
• Safety first: FFI and threading