CODEWITHSUNDEEP
iosgoogle-analyticsfirebasecocoapodsfirebase-cloud-messaging
Libor Zapletal
Libor Zapletal

Reputation: 14102

iOS - Duplicate symbols when added Firebase Messaging (conflict with Google Analytics)

I want to add Firebase Cloud Messaging to my project which has already other services from Google (like Analytics). I am using cocoapods and I added to my podfile:

pod 'Firebase'
pod 'Firebase/Messaging'

I run pod install and everything looked good but when I am trying to build project I get many duplicate symbol errors:

duplicate symbol _OBJC_CLASS_$_ACPGmpAudienceRoot in:
    .../Pods/Google/Libraries/libGGLCore.a(GmpAudience.pb.o)
    .../Pods/FirebaseAnalytics/Frameworks/FirebaseAnalytics.framework/FirebaseAnalytics(GmpAudience.pb_d68254ec585824fa42de6de2f056cda0.o)
... more and more duplicate symbol errors ...

How can I fix it? Why with Messaging there is added Analytics library too? I don't need it. I tried Clean project and delete Derived data but for now without luck.

Upvotes: 12

Views: 4304

Answers (3)

Guilherme Torres Castro
Guilherme Torres Castro

Reputation: 15350

Update your Google/(Google analytics) pod version to 3.0 higher .
I was using version 2.0.4, I did pod update and the following pods were update:

  • Installing Google 3.0.3 (was 2.0.4)
  • Installing GoogleSignIn 4.0.0 (was 3.0.0)

After that I was able to use Google analytics with Firebase

Upvotes: 4

rfox
rfox

Reputation: 94

I have exactly the same issue - an iOS app that is already using Google Analytics, but I want to add Firebase Messaging, just so the app can have a push notification capability. I added "pod 'Firebase/Messaging'" to the Podfile, and had the same linking errors on compiling.

A lot of searching revealed this compiler setting: Your Target -> Build Settings - Apple LLVM 7.1 - Code Generation -> No Common Blocks - set it to 'Yes', like this:

Build Settings

On Xcode 7.3 it seems the default for that setting is 'No', bu on making that change all the linking errors went away and the app built without issues.

Upvotes: 0

mkwongh2g2
mkwongh2g2

Reputation: 484

Depending on your use case, one thing you can consider: If you use Google Tag Manager, you can integrate with Firebase Analytics, and use GTM to forward the event data to Google Analytics if you prefer to have app and web data together or want to use Google Analytics for some other reason.

Upvotes: 0

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