title: Problems converting to library project including Facebook SDK
body: <p>I have a working app that I've now converted to being a library project in Eclipse.  When I attempt to include the library as a "Project Reference" in an empty app (no other functionality other than what it inherits from the library) it fails to build.  I get the message <code>Unable to execute dex: Multiple dex files define Lcom/facebook/android/R$attr;</code>.</p>
  
  <p>To try to work around this I tried to delete the Android Dependencies completely.  But then I get a "Class not found exception" for classes in the library.</p>
  
  <p>Is it possible to remove the Facebook dependency <strong><em>without also</em></strong> removing the app library dependency?  I tried to delete the facebooksdk.jar file but was unable to do so since all the buttons are grayed out.  (see screen capture below)</p>
  
  <p><img src="https://i.stack.imgur.com/fIXPv.png" alt="attempt to delete facebooksdk.jar"></p>
  
  <p>I also tried simply unchecking "Android Dependencies" in "Order and Export".  That had no effect on the problem.  </p>
  
  <p>Your suggestions are welcome.  </p>
  
  <hr>
  
  <p>FYI, my project has 3 main components.  All 3 are contained in the same Eclipse project folder (see screen capture):</p>
  
  <p><img src="https://i.stack.imgur.com/a70qs.png" alt="Eclipse project view"></p>
  
  <ul>
  <li>Application "App_A"</li>
  <li>Library_L (included as Project Reference in "A")  It's worth noting that Library_L executes perfectly when I run it as a non-library project.  </li>
  <li>Facebook SDK 3.0.2 (included as Project Reference in Library_L (see screen capture)
  <img src="https://i.stack.imgur.com/WAbFj.png" alt="Library&#39;s Project References"></li>
  </ul>