title: How to customize build setting based on architecture in Xcode 7.2
body: <p>I need to customize some build settings (namely linker flags) in <code>Xcode</code> based on whether the build is for architecture <code>arm64</code> or <code>armv7</code>.  I upgraded to <code>Xcode 7.2</code> and it seems there is no longer this option:</p>
  
  <p>As usual, you can expand any setting to see Debug and Release tabs, then if you click <code>+</code>, you will see pop up menu with <code>Any Architecture|Any SDK</code> on top, but inside the menu I only see options for different OSs and SDKs like <code>iOS 9.2</code>, <code>Any iOS</code>, <code>Mac OS X</code>, etc.  I chose <code>Any iOS</code> since I need to support older iOS versions, but I don't see a way to choose <code>arm64</code> and <code>armv7</code>, on which I need to customize.</p>
  
  <p>Am I missing something, or did <code>Xcode</code> really remove this option now?</p>
  
  <p>I suppose if this is no longer working, the only other way I see to customize is to create additional target, which is not very convenient.</p>