Mach-O Linker error when trying to setup Google Analytics in xcode

So I'm trying to get Google Analytics installed inside of my app and have been following the instructions from Google located here http://ift.tt/1LymQan.

My Podfile looks ike this:

 source 'http://ift.tt/1czpBWo'
 platform :ios, '8.0'
 use_frameworks!
 pod 'Google/Analytics', '~> 1.0.0'
 pod 'Google-Mobile-Ads-SDK'

Now everything ran fine after installing pod, but when I added this snippet of code to my AppDelegate.swift file, the app failed to compile.

    // Configure tracker from GoogleService-Info.plist.
    var configureError:NSError?
    GGLContext.sharedInstance().configureWithError(&configureError)
    assert(configureError == nil, "Error configuring Google services: \(configureError)")

   // Optional: configure GAI options.
    var gai = GAI.sharedInstance()
    gai.trackUncaughtExceptions = true  // report uncaught exceptions
    gai.logger.logLevel = GAILogLevel.Verbose  // remove before app release

This is causing the following compile errors:

Undefined symbols for architecture arm64: "_OBJC_CLASS_$_GAI", referenced from: __TMaCSo3GAI in AppDelegate.o "_OBJC_CLASS_$_GGLContext", referenced from: __TMaCSo10GGLContext in AppDelegate.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any idea how to fix this?

via Chebli Mohamed