Troubleshooting

Installing

Linux

cannot load such file -- mkmf (LoadError)

This usually means that you do not have the ruby-dev package installed. Try something like sudo apt-get install ruby-dev (or manage your ruby installation using RVM.)

##OSX

When you try to gem install it on an up-to-date OSX, you may get an error from the ffi dependency that looks a bit like this:

clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]

You can make this go away by doing:

export ARCHFLAGS="-Wno-error=unused-command-line-argument-hard-error-in-future”