title: Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_AFHTTPRequestSerializer"
body: <p>I integrated the SDKTools via CocoaPods, with <code>use_frameworks!</code> and it is throwing me these errors:</p>
  
  <p><code>Undefined symbols for architecture x86_64:
    "_OBJC_CLASS_$_AFHTTPRequestSerializer", referenced from:
        objc-class-ref in SKTDownloadObjectHelper.o
    "_OBJC_CLASS_$_AFNetworkReachabilityManager", referenced from:
        objc-class-ref in SKTDownloadManager.o
    "_OBJC_CLASS_$_SKAdvisorSettings", referenced from:
        objc-class-ref in SKTNavigationManager+Factories.o
    "_OBJC_CLASS_$_SKAnimationSettings", referenced from:
        objc-class-ref in SKTNavigationManager+UI.o
    "_OBJC_CLASS_$_SKAnnotation", referenced from:
        objc-class-ref in SKTNavigationManager+UI.o
    "_OBJC_CLASS_$_SKMapView", referenced from:
        objc-class-ref in SKTNavigationManager+Styles.o
    "_OBJC_CLASS_$_SKMapViewStyle", referenced from:
        objc-class-ref in SKTNavigationConfiguration.o
    "_OBJC_CLASS_$_SKMapsService", referenced from:
        objc-class-ref in SKTDownloadManager+Additions.o
        objc-class-ref in SKTDownloadObjectHelper.o
    "_OBJC_CLASS_$_SKNavigationSettings", referenced from:
        objc-class-ref in SKTNavigationManager.o
    "_OBJC_CLASS_$_SKPositionerService", referenced from:
        objc-class-ref in SKTNavigationManager+BackgroundMode.o
        objc-class-ref in SKTNavigationManager+Factories.o
        objc-class-ref in SKTNavigationManager+NavigationState.o
        objc-class-ref in SKTNavigationManager+UI.o
        objc-class-ref in SKTNavigationManager.o
        objc-class-ref in SKTNavigationUtils.o
    "_OBJC_CLASS_$_SKReverseGeocoderService", referenced from:
        objc-class-ref in SKTNavigationUtils.o
    "_OBJC_CLASS_$_SKRouteSettings", referenced from:
        objc-class-ref in SKTNavigationManager+Factories.o
    "_OBJC_CLASS_$_SKRoutingService", referenced from:
        objc-class-ref in SKTNavigationManager+BackgroundMode.o
        objc-class-ref in SKTNavigationManager+NavigationState.o
        objc-class-ref in SKTNavigationManager+Settings.o
        objc-class-ref in SKTNavigationManager+Styles.o
        objc-class-ref in SKTNavigationManager+UI.o
        objc-class-ref in SKTNavigationManager.o
    "_OBJC_CLASS_$_SKTrailSettings", referenced from:
        objc-class-ref in SKTNavigationManager.o
    "_OBJC_CLASS_$_SKVisualAdviceConfiguration", referenced from:
        objc-class-ref in SKTNavigationManager+Factories.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></p>
  
  <p>Without the <code>use_frameworks!</code> flag, everything works fine. But I have to use this flag in order to use other pods.
  This is a swift project btw.</p>
  
  <p>Any help is highly appreciated since I've been trying to solve this for days now.</p>