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Latest commit 4a237f5 Nov 17, 2014 @jvoorhis Deprecation notice.


ruby-llvm has moved to ruby-llvm/ruby-llvm

This repository has been deprecated in favor of



Jeremy Voorhis


Evan Phoenix, David Holroyd, Takanori Ishikawa, Ronaldo M. Ferraz, Mac Malone, Chris Wailes, Ary Borenszweig, Richard Musiol, Juan Wajnerman, Steven Farlie


Copyright © 2010-2012 Jeremy Voorhis


BSD 3-clause (see LICENSE)

This package contains Ruby bindings to the LLVM api, enabling users to make use of LLVM's optimization passes and JIT compilation for implementing compiled DSLs, callback functions, or fast Ruby method implementations.

ruby-llvm has been tested on OS X 10.7 using the following Ruby interpreters:

  • MRI 1.8.7-p174

  • MRI 1.9.2-p290

  • MRI 1.9.3-preview1

  • JRuby 1.4.0

If using MRI, ffi >= 1.0.7 is recommended (only ffi >= 1.0.0 is required).


  • LLVM 3.0, including libLLVM-3.0 (compile LLVM with –enable-shared).

  • In order to ensure the usability of JIT features (i.e. create_jit_compiler), compile LLVM with –enable-jit as well.


LLVM can be installed with Homebrew by executing `brew install llvm –shared`

About version numbers

The first two digits of ruby-llvm's version number refer to the required major and minor version of LLVM. The third digit refers to the ruby-llvm release itself. Because LLVM's api changes often, this coupling between LLVM and ruby-llvm versions is useful.

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