Rails 4 Gem Errors

1. Error libv8

[Error Msg]

An error occurred while installing libv8 (3.16.14.11), and Bundler cannot continue.

Make sure that `gem install libv8 -v '3.16.14.11'` succeeds before bundling.

[Solv]

gem install libv8 -v '3.16.14.11' -- --with-system-v8