Xcode Undefined symbols for architecture x86_64 for FBAudienceNetwork
<p>I'm facing this problem when I upgrade my facebook sdk from 4.5.1 to 4.13.1 in my xcode project.</p>

<p>I have replaced those Facebook SDK files: 
<code>Bolts, FBAudienceNetwork, FBSDKCoreKit, FBSDKLoginKit, FBSDKMessengerShareKit, FBSDKShareKit</code> then I get Undefined symbols for <code>architecture x86_64</code> from <code>FBAudienceNetwork</code> on the methods below:</p>

<blockquote>
  <p>"_xmlFreeDoc", referenced from:</p>
  
  <p>"_xmlLastError", referenced from:</p>
  
  <p>"_xmlReadMemory", referenced from:</p>
  
  <p>"_xmlXPathCastToBoolean", referenced from:</p>
  
  <p>"_xmlXPathCastToNumber", referenced from:</p>
  
  <p>"_xmlXPathCastToString", referenced from:</p>
  
  <p>"_xmlXPathCompile", referenced from:</p>
  
  <p>"_xmlXPathCompiledEval", referenced from:</p>
  
  <p>"_xmlXPathFreeCompExpr", referenced from:</p>
  
  <p>"_xmlXPathFreeContext", referenced from:</p>
  
  <p>"_xmlXPathFreeObject", referenced from:</p>
  
  <p>"_xmlXPathNewContext", referenced from:</p>
  
  <p>"_xmlXPathRegisterNs", referenced from:</p>
  
  <p>clang: error: linker command failed with exit code 1 (use -v to see
  invocation)</p>
</blockquote>