title: Xcode 9 _OBJC_CLASS_$_FBSDKApplicationDelegate
body: <p>I'm trying to implement Facebook SDK into my project and I get the same issue
  <a href="https://stackoverflow.com/questions/32690590/facebook-sdk-is-not-a-dylib-error-after-update-update-xcode-7">Facebook sdk is not a dylib error after update update Xcode 7?</a>
  Well, I have <code>Bolts</code> in my <code>Frameworks</code> Directory, also</p>
  
  <p>In my <code>Build Settings</code>:
  <code>Frameworks Search Path: ~/Documents/Frameworks/FacebookSDKs-iOS-4.27.0</code>
  (That is correct for my path)</p>
  
  <p>In my <code>Briding-Header.h</code></p>
  
  <pre><code>#import &lt;Bolts/Bolts.h&gt;
  #import &lt;FBSDKCoreKit/FBSDKCoreKit.h&gt;
  #import &lt;FBSDKLoginKit/FBSDKLoginKit.h&gt;
  </code></pre>
  
  <p>But, I'm still getting the same error, also, I just deleted the <code>Derived data</code>.</p>
  
  <p>The error is:</p>
  
  <pre><code>ld: warning: Auto-Linking supplied '/Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/FBSDKCoreKit.framework/FBSDKCoreKit', framework linker option at /Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/FBSDKCoreKit.framework/FBSDKCoreKit is not a dylib
  ld: warning: Auto-Linking supplied '/Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/Bolts.framework/Bolts', framework linker option at /Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/Bolts.framework/Bolts is not a dylib
  ld: warning: Auto-Linking supplied '/Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/FBSDKLoginKit.framework/FBSDKLoginKit', framework linker option at /Users/jarvis/Documents/Frameworks/FacebookSDKs-iOS-4.27.0/FBSDKLoginKit.framework/FBSDKLoginKit is not a dylib
  Undefined symbols for architecture x86_64:
    "_OBJC_CLASS_$_FBSDKApplicationDelegate", referenced from:
        objc-class-ref in AppDelegate.o
  ld: symbol(s) not found for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>Some one has an idea about this error?</p>