title: Bitcode Compile During Archive Never Finishes
body: <p>I am preparing an app for ad hoc distribution via Test Flight.  I have stepped through (successfully) all of the preparatory steps in this Ray Wenderlich article already (<a href="https://www.raywenderlich.com/48750/testflight-sdk-tutorial">https://www.raywenderlich.com/48750/testflight-sdk-tutorial</a>), and I feel confident that the certificate, App ID, and Provisioning Profile are all created correctly and in proper working order.  I am on the step in which you archive the project in Xcode.  I have selected these settings during the archive process:</p>
  
  <p>I choose to Export :</p>
  
  <p><a href="https://i.stack.imgur.com/X8z3F.png"><img src="https://i.stack.imgur.com/X8z3F.png" alt="enter image description here"></a></p>
  
  <p>I choose "Save for Ad Hoc deployment" since our plan is to use Test Flight to distribute the app to our testers.  I <em>do</em> believe this is the correct option for that (as opposed to "for enterprise deployment"):</p>
  
  <p><a href="https://i.stack.imgur.com/tEdyG.png"><img src="https://i.stack.imgur.com/tEdyG.png" alt="enter image description here"></a></p>
  
  <p>This is the default setting, and I do not have a specific reason to change it, although I'd appreciate any insight you may have:</p>
  
  <p><a href="https://i.stack.imgur.com/3JaYq.png"><img src="https://i.stack.imgur.com/3JaYq.png" alt="enter image description here"></a></p>
  
  <p>Again, default options for both of these.  The first one is unchecked by default and the second one is checked by default:</p>
  
  <p><a href="https://i.stack.imgur.com/sna57.png"><img src="https://i.stack.imgur.com/sna57.png" alt="enter image description here"></a></p>
  
  <p>When I get to this screen, the spinner spins seemingly forever:</p>
  
  <p><a href="https://i.stack.imgur.com/62ejr.png"><img src="https://i.stack.imgur.com/62ejr.png" alt="enter image description here"></a></p>
  
  <p>The problem seems to be that once it gets to the part where it is compiling from bitcode it spins and spins and shows no signs of finishing.  When I am building the app to run on a device connected to the MBP, it compiles quickly, usually within a few seconds.  What could be causing this unresponsiveness?</p>