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 you should write your next extension using Ruby-FFI.
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. At a minimum, you will need:
On Linux systems running with PaX (Gentoo, Alpine, etc.) FFI may trigger mprotect errors. You may need to disable mprotect for ruby (paxctl -m [/path/to/ruby]) for the time being until a solution is found.
From rubygems:
[sudo] gem install ffi
or from the git repository on github:
git clone git://github.com/ffi/ffi.git
git submodule update --init --recursive
cd ffi
rake install
The ffi library is covered by the BSD license, also see the LICENSE file. The specs are shared with Rubyspec and are licensed by the same license as Rubyspec, see the LICENSE.SPECS file.
The following people have submitted code, bug reports, or otherwise contributed to the success of this project:
FAQs
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We found that alinta-ffi demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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