title: Cannot install bcrypt-ruby on vagrant machine
body: <p>I have followed the instructions for setting up a vagrant rails dev box from <a href="https://github.com/rails/rails-dev-box" rel="nofollow">https://github.com/rails/rails-dev-box</a>. Unfortunately when I attempt to bundle I get the following:</p>
  
  <pre><code>Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
  
      /home/vagrant/.rvm/rubies/ruby-2.0.0-p353/bin/ruby extconf.rb 
  creating Makefile
  
  make "DESTDIR=" clean
  sh: 1: make: not found
  
  make "DESTDIR="
  sh: 1: make: not found
  
  make failed, exit code 127
  
  Gem files will remain installed in /home/vagrant/.rvm/gems/ruby-2.0.0-p353/gems/bcrypt-ruby-3.0.1 for inspection.
  Results logged to /home/vagrant/.rvm/gems/ruby-2.0.0-p353/extensions/x86-linux/2.0.0/bcrypt-ruby-3.0.1/gem_make.out
  
  An error occurred while installing bcrypt-ruby (3.0.1), and Bundler cannot
  continue.
  Make sure that `gem install bcrypt-ruby -v '3.0.1'` succeeds before bundling.
  </code></pre>
  
  <p>When I try and run that gem install command I get the same issue. I have done some searching and am at a loss. Any input is greatly appreciated.</p>