1. Pull the repo and bundle $ git clone [email protected]:code0100fun/ruby-llvm.git $ cd ruby-llvm/ $ bundle install 2. Create a symbolic link to llvm-config in your PATH ln -s /usr/local/Cellar/llvm/3.4/bin/llvm-config /usr/local/bin/llvm-config 3. Build the Ruby LLVM support *.dylib $ cd ext/ruby-llvm-support/ $ rake $ cd ../../ 4. Build the gem and install it $ gem build ruby-llvm.gemspec $ gem install ./ruby-llvm-3.4.0.gem 5. Run the tests to verify it's working $ rake ... Finished in 0.175873s, 477.6174 runs/s, 1660.2890 assertions/s. 84 runs, 292 assertions, 0 failures, 0 errors, 0 skips ...