title: Firebase iOS SDK crashes when used in Xcode frameworks
body: <p>I am trying to create a few common functions that read and write to Firestore in an Xcode framework so that they can be shared across a few a different apps. But the app crashes with </p>
  
  <blockquote>
    <p>The default FIRApp instance must be configured before the default
    FIRAuthinstance can be initialized. One way to ensure that is to call
    <code>[FIRApp configure];</code> (<code>FirebaseApp.configure()</code> in Swift) in the App
    Delegate's <code>application:didFinishLaunchingWithOptions:</code>
    (<code>application(_:didFinishLaunchingWithOptions:)</code> in Swift).'</p>
  </blockquote>
  
  <p>I am configuring Firebase in the main app with <code>FirebaseApp.configure()</code>. As soon as I move the file off the framework, the crash goes away. Is this expected to work? </p>
  
  <p>Other details that might be relevant. </p>
  
  <p>Xcode 11.2.1
  Deployment target iOS 13.0</p>