title: Why is android source such a huge size?
body: <p>The guide <a href="http://source.android.com/source/initializing.html" rel="nofollow">Initializing a Build Environment</a> says that -  </p>
  
  <blockquote>
    <p>Note: The source download is approximately 8.5GB in size. You will
    need over 30GB free to complete a single build, and up to 100GB (or
    more) for a full set of builds.</p>
  </blockquote>
  
  <p>My questions - </p>
  
  <ol>
  <li>As I understand at this point vendor specific applications and graphics are not there in the repository and it basically contains kernel source, generic drivers and basic tools. Why then is it such a large size?</li>
  <li>Why on earth would I need 100GB to build it?</li>
  <li>Is it possible to obtain a compressed source tarball?</li>
  </ol>