title: Proguard: exclude external library jar from obfuscation
body: <p>In my android project, I have a <code>libs/</code> directory under project root. </p>
  
  <pre><code>MyProject/
    - libs/
       - lib1.jar 
       - lib2.jar
  </code></pre>
  
  <p>In Eclipse, I added those jars to my build path. </p>
  
  <p>In my proguard configuration, I try to exclude these jars from obfuscation. So I defined the following lines in <strong>proguard.cfg</strong></p>
  
  <pre><code>-libraryjars /libs/lib1.jar
  -libraryjars /libs/lib2.jar
  </code></pre>
  
  <p>But I got error :</p>
  
  <pre><code>Can't read [/libs/lib1.jar] (No such file or directory)
  </code></pre>
  
  <p>Then, I change to <code>-libraryjars /libs/lib1.jar</code> 
  but I got <code>can't find referenced class</code> error which points to my lib's classes.</p>
  
  <p>Where am I wrong in my configuration? What is the correct way of using <code>-libraryjars</code> in my case?</p>