title: Error comes while unity3d project opens in Xcode
body: <p>My unity project creates error while opens in Xcode.</p>
  
  <p>The error is</p>
  
  <pre><code>clang: error: linker command failed with exit code 1 
  (use -v to see invocation)
  </code></pre>
  
  <p>So project not opens in xcode.</p>
  
  <pre><code>Xcode Version : xcode5.0
  
  Unity Version : unity4.0
  </code></pre>
  
  <p>How can i escape from this issue?</p>
  
  <p><img src="https://i.stack.imgur.com/dXTgj.png" alt="enter image description here"></p>