Firebase 10.x compiling issue
Description
Once upgrading to Firebase 10.x, we faced compiling issues where Xcode said Multiple methods named xxxx found with mismatched result. Downgraded to 9.x, then everything is fine.
Example error line:

Reproducing the issue
No response
Firebase SDK Version
10.1
Xcode Version
14.1
Installation Method
CocoaPods
Firebase Product(s)
All
Targeted Platforms
iOS
Relevant Log Output
No response
If using Swift Package Manager, the project's Package.resolved
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Replace this line with the contents of your Package.resolved.
If using CocoaPods, the project's Podfile.lock
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- Firebase/CoreOnly (10.1.0):
- FirebaseCore (= 10.1.0)
- Firebase/Database (10.1.0):
- Firebase/CoreOnly
- FirebaseDatabase (~> 10.1.0)
- FirebaseABTesting (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseAnalytics (10.1.0):
- FirebaseAnalytics/AdIdSupport (= 10.1.0)
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleUtilities/AppDelegateSwizzler (~> 7.8)
- GoogleUtilities/MethodSwizzler (~> 7.8)
- GoogleUtilities/Network (~> 7.8)
- "GoogleUtilities/NSData+zlib (~> 7.8)"
- nanopb (< 2.30910.0, >= 2.30908.0)
- FirebaseAnalytics/AdIdSupport (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleAppMeasurement (= 10.1.0)
- GoogleUtilities/AppDelegateSwizzler (~> 7.8)
- GoogleUtilities/MethodSwizzler (~> 7.8)
- GoogleUtilities/Network (~> 7.8)
- "GoogleUtilities/NSData+zlib (~> 7.8)"
- nanopb (< 2.30910.0, >= 2.30908.0)
- FirebaseAnonymousAuthUI (12.3.0):
- FirebaseAuth (< 11.0, >= 8.0)
- FirebaseAuthUI
- FirebaseCore
- FirebaseAppCheck (10.1.0):
- FirebaseCore (~> 10.0)
- GoogleUtilities/Environment (~> 7.8)
- PromisesObjC (~> 2.1)
- FirebaseAppCheckInterop (10.1.0)
- FirebaseAuth (10.1.0):
- FirebaseCore (~> 10.0)
- GoogleUtilities/AppDelegateSwizzler (~> 7.8)
- GoogleUtilities/Environment (~> 7.8)
- GTMSessionFetcher/Core (~> 2.1)
- FirebaseAuthInterop (10.1.0)
- FirebaseAuthUI (12.3.0):
- FirebaseAuth (< 11.0, >= 8.0)
- FirebaseCore
- FirebaseCore (10.1.0):
- FirebaseCoreInternal (~> 10.0)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/Logger (~> 7.8)
- FirebaseCoreExtension (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseCoreInternal (10.1.0):
- "GoogleUtilities/NSData+zlib (~> 7.8)"
- FirebaseCrashlytics (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleDataTransport (~> 9.2)
- GoogleUtilities/Environment (~> 7.8)
- nanopb (< 2.30910.0, >= 2.30908.0)
- PromisesObjC (~> 2.1)
- FirebaseDatabase (10.1.0):
- FirebaseCore (~> 10.0)
- leveldb-library (~> 1.22)
- FirebaseDatabaseUI (12.3.0):
- FirebaseDatabase (< 11.0, >= 8.0)
- FirebaseEmailAuthUI (12.3.0):
- FirebaseAuth
- FirebaseAuthUI
- FirebaseCore
- GoogleUtilities/UserDefaults
- FirebaseFacebookAuthUI (12.3.0):
- FBSDKCoreKit_Basics
- FBSDKLoginKit (< 15.0, >= 11.0)
- FirebaseAuth
- FirebaseAuthUI
- FirebaseCore
- FirebaseFirestore (10.1.0):
- abseil/algorithm (~> 1.20211102.0)
- abseil/base (~> 1.20211102.0)
- abseil/container/flat_hash_map (~> 1.20211102.0)
- abseil/memory (~> 1.20211102.0)
- abseil/meta (~> 1.20211102.0)
- abseil/strings/strings (~> 1.20211102.0)
- abseil/time (~> 1.20211102.0)
- abseil/types (~> 1.20211102.0)
- FirebaseCore (~> 10.0)
- "gRPC-C++ (~> 1.44.0)"
- leveldb-library (~> 1.22)
- nanopb (< 2.30910.0, >= 2.30908.0)
- FirebaseFirestoreUI (12.3.0):
- FirebaseFirestore (< 11.0, >= 8.0)
- FirebaseFunctions (10.1.0):
- FirebaseAppCheckInterop (~> 10.0)
- FirebaseAuthInterop (~> 10.0)
- FirebaseCore (~> 10.0)
- FirebaseCoreExtension (~> 10.0)
- FirebaseMessagingInterop (~> 10.0)
- FirebaseSharedSwift (~> 10.0)
- GTMSessionFetcher/Core (~> 2.1)
- FirebaseGoogleAuthUI (12.3.0):
- FirebaseAuth
- FirebaseAuthUI
- FirebaseCore
- GoogleSignIn (~> 6.0)
- FirebaseInstallations (10.1.0):
- FirebaseCore (~> 10.0)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/UserDefaults (~> 7.8)
- PromisesObjC (~> 2.1)
- FirebaseMessaging (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleDataTransport (~> 9.2)
- GoogleUtilities/AppDelegateSwizzler (~> 7.8)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/Reachability (~> 7.8)
- GoogleUtilities/UserDefaults (~> 7.8)
- nanopb (< 2.30910.0, >= 2.30908.0)
- FirebaseMessagingInterop (10.1.0)
- FirebaseOAuthUI (12.3.0):
- FirebaseAuth (< 11.0, >= 8.0)
- FirebaseAuthUI (< 13.0, >= 12.0.2)
- FirebasePerformance (10.1.0):
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- FirebaseRemoteConfig (~> 10.0)
- GoogleDataTransport (~> 9.2)
- GoogleUtilities/Environment (~> 7.8)
- GoogleUtilities/ISASwizzler (~> 7.8)
- GoogleUtilities/MethodSwizzler (~> 7.8)
- nanopb (< 2.30910.0, >= 2.30908.0)
- FirebasePhoneAuthUI (12.3.0):
- FirebaseAuth
- FirebaseAuthUI
- FirebaseRemoteConfig (10.1.0):
- FirebaseABTesting (~> 10.0)
- FirebaseCore (~> 10.0)
- FirebaseInstallations (~> 10.0)
- GoogleUtilities/Environment (~> 7.8)
- "GoogleUtilities/NSData+zlib (~> 7.8)"
- FirebaseSharedSwift (10.1.0)
- FirebaseStorage (10.1.0):
- FirebaseAppCheckInterop (~> 10.0)
- FirebaseAuthInterop (~> 10.0)
- FirebaseCore (~> 10.0)
- FirebaseCoreExtension (~> 10.0)
- GTMSessionFetcher/Core (~> 2.1)
- FirebaseStorageUI (12.3.0):
- FirebaseStorage (< 11.0, >= 8.0)
- SDWebImage (~> 5.6)
- FirebaseUI (12.3.0):
- FirebaseUI/Anonymous (= 12.3.0)
- FirebaseUI/Auth (= 12.3.0)
- FirebaseUI/Database (= 12.3.0)
- FirebaseUI/Email (= 12.3.0)
- FirebaseUI/Facebook (= 12.3.0)
- FirebaseUI/Firestore (= 12.3.0)
- FirebaseUI/Google (= 12.3.0)
- FirebaseUI/OAuth (= 12.3.0)
- FirebaseUI/Phone (= 12.3.0)
- FirebaseUI/Storage (= 12.3.0)
- FirebaseUI/Anonymous (12.3.0):
- FirebaseAnonymousAuthUI (~> 12.0)
- FirebaseUI/Auth (12.3.0):
- FirebaseAuthUI (~> 12.0)
- FirebaseUI/Database (12.3.0):
- FirebaseDatabaseUI (~> 12.0)
- FirebaseUI/Email (12.3.0):
- FirebaseEmailAuthUI (~> 12.0)
- FirebaseUI/Facebook (12.3.0):
- FirebaseFacebookAuthUI (~> 12.0)
- FirebaseUI/Firestore (12.3.0):
- FirebaseFirestoreUI (~> 12.0)
- FirebaseUI/Google (12.3.0):
- FirebaseGoogleAuthUI (~> 12.0)
- FirebaseUI/OAuth (12.3.0):
- FirebaseOAuthUI (~> 12.0)
- FirebaseUI/Phone (12.3.0):
- FirebasePhoneAuthUI (~> 12.0)
- FirebaseUI/Storage (12.3.0):
- FirebaseStorageUI (~> 12.0)
I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.
Please share the full error message including the locations of the multiple methods.
Hi @paulb777, sorry for not being clear. The problem was that our project couldn't compile when adding Firebase 10.x. It was working fine with Firebase 9.6 and older. So we are just wondering there were any compiling setting changed/added since Firebase 10.x?
@businessengine I don't know of any options that changed.
Hey @businessengine. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.
If you have more information that will help us get to the bottom of this, just add a comment!
Since there haven't been any recent updates here, I am going to close this issue.
@businessengine if you're still experiencing this problem and want to continue the discussion just leave a comment here and we are happy to re-open this.