Google Ads using FireBase + CocoaPods gives error: "duplicated symbols for architechture x86_64"
target 'myapp' do
pod 'Firebase/Core'
#the other projects not related with Firebase
use_frameworks!
end
leads to this error:
51968 duplicated symbols for architechture x86_64
the callstack consists of compiled classes from the other frameworks.
Swift 3 , XCode 8.
Without this pod (FireBase) my project works correctly.
The problem was about -ObjC flag. CocoaPods added this flag into Other linker flags project automatically.
But this this flag my other custom projects did not build properly. In order to fix this I did these steps.
- https://firebase.google.com/docs/ios/setup I've dowloaded file under Integrate without CocoaPods .
- Dragged several franeworks into file as described at Readme.md :
FirebaseAnalytics.framework,FirebaseCore.framework,FirebaseInstanceID.framework,GoogleInterchangeUtilities.framework,GoogleSymbolUtilities.framework,GoogleToolboxForMac.frameworkand for admob:GoogleMobileAds.framework - In order to prevent
-ObjCflat that force use all libraries I've changedOther linker flagusing-force_load. That is,-force_load GoogleMobileAds.framework/GoogleMobileAds -force_load FirebaseAnalytics.framework/FirebaseAnalytics -force_load FirebaseCore.framework/FirebaseCore -force_load GoogleToolboxForMac.framework/GoogleToolboxForMac -force_load GoogleSymbolUtilities.framework/GoogleSymbolUtilities -force_load GoogleInterchangeUtilities.framework/GoogleInterchangeUtilities -force_load FirebaseInstanceID.framework/FirebaseInstanceID
Do not forget to create and download GoogleService-Info.plist file inside console: https://console.firebase.google.com
** EDIT **
Version 3.12 rejects -force_load GoogleSymbolUtilities.framework/GoogleSymbolUtilities
So , now correct solution is:
-force_load GoogleMobileAds.framework/GoogleMobileAds -force_load FirebaseAnalytics.framework/FirebaseAnalytics -force_load FirebaseCore.framework/FirebaseCore -force_load GoogleToolboxForMac.framework/GoogleToolboxForMac -force_load GoogleInterchangeUtilities.framework/GoogleInterchangeUtilities -force_load FirebaseInstanceID.framework/FirebaseInstanceID