Ruby-FFI is a ruby extension for programmatically loading dynamic libraries, binding functions within them, and calling those functions from Ruby code. Moreover, a Ruby-FFI extension works without changes on Ruby and JRuby. Discover why should you write your next extension using Ruby-FFI here.
It has a very intuitive DSL
It supports all C native types
It supports C structs (also nested), enums and global variables
It supports callbacks
It has smart methods to handle memory management of pointers and structs
require 'ffi' module MyLib extend FFI::Library ffi_lib 'c' attach_function :puts, [ :string ], :int end MyLib.puts 'Hello, World using libc!'
For less minimalistic and more sane examples you may look at:
You need a sane building environment in order to compile the extension.
[sudo] gem install ffi
or from the git repository on github:
git clone git://github.com/ffi/ffi.git cd ffi rake gem:install
See LICENSE file.