FirebaseとGoogle Sign In SDKをCocoapodsなしで手動で統合するとシンボルが重複する

Question

FirebaseとGoogle Sign In SDKを既存のiOSプロジェクトに手動で統合すると、重複するシンボルエラーが発生します。

ココアポッドを使用しているので、ここの関連する質問は役に立ちませんでした。

Firebase and Google Signin giving duplicate symbols error

私は年代順に行った手順：私のプロジェクトにダウンロードFirebase SDK（3.11.0）からFirebase.hファイルと一緒に

1. コピーした解析を、認証およびデータベースのフォルダをターゲットに追加されます。

2. GoogleService-Info.plistをプロジェクトにコピーしてターゲットに追加しました。

3. 他のリンカーフラグに-ObjCフラグを追加しました。

4. ダウンロードしたGoogle Sign In SDK（4.0.1）の必要なフレームワークとバンドルを自分のプロジェクトにコピーしてターゲットに追加しました。

5. 必要なフレームワークとライブラリをリンクしました。ここで

は、関連するプロジェクト構造である：ここで

Firebase 
    Analytics 
     FirebaseAnalytics.framework 
     FirebaseCore.framework 
     FirebaseInstanceId.framework 
     GoogleInterchangeUtilities.framework 
     GoogleSymbolUtilities.framework 
     GoogleToolboxForMac.framework 
    Auth 
     FirebaseAuth.framework 
     GTMSessionFetcher.framework 
GoogleSignIn 
    GoogleAppUtilities.framework 
    GoogleSignIn.bundle 
    GoogleSignIn.framework 
    GoogleSignInDependencies.framework 
    GoogleSymbolUtilities.framework (removed as Firebase Analytics already includes it) 

は、エラーログ（切り捨て）である：

Ld /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Products/Debug-iphonesimulator/AddressBookGoogleMaps.app/AddressBookGoogleMaps normal x86_64 
    cd /Projects/iOS/AddressBookGoogleMaps 
    export IPHONEOS_DEPLOYMENT_TARGET=8.0 
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin" 
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.2.sdk -L/Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Products/Debug-iphonesimulator -F/Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Products/Debug-iphonesimulator -F/Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics -F/Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth -F/Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Database -F/Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn -filelist /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Intermediates/AddressBookGoogleMaps.build/Debug-iphonesimulator/AddressBookGoogleMaps.build/Objects-normal/x86_64/AddressBookGoogleMaps.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -mios-simulator-version-min=8.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Intermediates/AddressBookGoogleMaps.build/Debug-iphonesimulator/AddressBookGoogleMaps.build/Objects-normal/x86_64/AddressBookGoogleMaps_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -ObjC -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __entitlements -Xlinker /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Intermediates/AddressBookGoogleMaps.build/Debug-iphonesimulator/AddressBookGoogleMaps.build/AddressBookGoogleMaps.app.xcent -framework GoogleToolboxForMac -framework FirebaseAuth -framework FirebaseAnalytics -framework GoogleSignInDependencies -framework SystemConfiguration -framework GoogleAppUtilities -framework GTMSessionFetcher -framework FirebaseCore -framework GoogleSignIn -framework SafariServices -framework GoogleSymbolUtilities -framework Accelerate -framework GoogleSymbolUtilities -framework GoogleInterchangeUtilities -framework FirebaseDatabase -framework FirebaseInstanceID -Xlinker -dependency_info -Xlinker /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Intermediates/AddressBookGoogleMaps.build/Debug-iphonesimulator/AddressBookGoogleMaps.build/Objects-normal/x86_64/AddressBookGoogleMaps_dependency_info.dat -o /Users/Ehtesham/Library/Developer/Xcode/DerivedData/AddressBookGoogleMaps-hbtfxxvykazaogbfqnnraeuywtdt/Build/Products/Debug-iphonesimulator/AddressBookGoogleMaps.app/AddressBookGoogleMaps 

duplicate symbol _OBJC_CLASS_$_GTMLogStandardFormatter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogStandardFormatter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogBasicFormatter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogBasicFormatter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogNoFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogNoFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogMininumLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogMininumLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogMaximumLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogMaximumLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_METACLASS_$_GTMLogLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
duplicate symbol _OBJC_CLASS_$_GTMLogAllowedLevelFilter in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Analytics/GoogleToolboxForMac.framework/GoogleToolboxForMac(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMLogger_e66760ac68814bab22c3e6b0850da5e6.o) 

........................................ 
........................................ 

duplicate symbol _OBJC_IVAR_$_GTMSessionFetcherService._cookieStorageMethod in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionFetcherService_c6b7326897506dd1305d6961fdc1ec8b.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionFetcherService_c6b7326897506dd1305d6961fdc1ec8b.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionFetcherService._retryEnabled in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionFetcherService_c6b7326897506dd1305d6961fdc1ec8b.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionFetcherService_c6b7326897506dd1305d6961fdc1ec8b.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadGranularity in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._shouldInitiateOffsetQuery in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._lastChunkRequest in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._initialBodySent in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._fetcherInFlight in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._currentOffset in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._useBackgroundSessionOnChunkFetchers in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._recentChunkReponseHeaders in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._delegateCompletionHandler in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._chunkFetcher in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_CLASS_$_GTMSessionUploadFetcher in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_METACLASS_$_GTMSessionUploadFetcher in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadDataProvider in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _kGTMSessionFetcherUploadLocationObtainedNotification in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._initialBodyLength in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadFileLength in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._subdataGenerating in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._isSubdataGenerating in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _kGTMSessionUploadFetcherMaximumDemandBufferSize in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._chunkSize in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _kGTMSessionUploadFetcherStandardChunkSize in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._delegateCallbackQueue in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadMIMEType in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadFileHandle in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._recentChunkStatusCode in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._isPaused in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._isRestartedUpload in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadData in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadLocationURL in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
duplicate symbol _OBJC_IVAR_$_GTMSessionUploadFetcher._uploadFileURL in: 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/GoogleSignIn/GoogleSignInDependencies.framework/GoogleSignInDependencies(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
    /Projects/iOS/AddressBookGoogleMaps/AddressBookGoogleMaps/Sources/Externals/Firebase/Auth/GTMSessionFetcher.framework/GTMSessionFetcher(GTMSessionUploadFetcher_fb894b20da0d1114d3ddd8f56ed741c5.o) 
ld: 194 duplicate symbols for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

Answer 1

これは理想的なソリューションとはかけ離れていますが、これを解決しました。

（この溶液が原因両方のライブラリは、共通クラスを含むと-ObjC又は-all_loadフラグを使用して「重複シンボル」エラー原因2つのスタティックライブラリいずれの場合にも適用することができる。）

コピーGoogleSignInDependenciesファイルGoogleSignInDependencies内部。別の場所のPATHにあるフレームワーク。このファイルは、異なるアーキテクチャーのコードを持つ太いファイルです。

端末を開いてPATHに移動します。

$ cd PATH 

コマンドを実行して、fatライブラリに関する情報を取得します。

$ lipo -info GoogleSignInDependencies 

以下の結果が得られます。

Architectures in the fat file: GoogleSignInDependencies are: armv7 i386 x86_64 arm64 

このように、fatファイルには4つのアーキテクチャがあります。

以下のコマンドを実行して、ファットファイルからシンファイル（1つのアーキテクチャのみのコードを含むファイル）を取得します。

$ lipo -thin armv7 GoogleSignInDependencies -output armv7.a 
$ lipo -thin i386 GoogleSignInDependencies -output i386.a 
$ lipo -thin x86_64 GoogleSignInDependencies -output x86_64.a 
$ lipo -thin arm64 GoogleSignInDependencies -output arm64.a 

あなたはarmv7.a、i386.a、x86_64.aとarm64.aという名前の4つの薄いファイルを取得します。

GoogleSignInDependenciesファイルを削除します。これは不要です。

armv7、i386、x86_64、arm64という4つの新しいフォルダを作成します。次に、薄いファイルarmv7.a、i386.a、x86_64.a、およびarm64.aをそれぞれのフォルダに移動します。次のようなフォルダ構造が必要です。

ターミナルから4つのフォルダのそれぞれに移動し、次のコマンドを使用してシンファイルからオブジェクトファイル（* .o）を抽出します。

$ cd armv7 
$ ar -x armv7.a 
$ cd ../i386 
$ ar -x i386.a 
$ cd ../x86_64 
$ ar -x x86_64.a 
$ cd ../arm64 
$ ar -x arm64.a 

これらのコマンドを実行した後、4つのフォルダのそれぞれに次のファイルが含まれている必要があります。

__.SYMDEF 
GTMGeometryUtils_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMLogger_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMNSDictionary+URLArguments_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMNSString+URLArguments_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMOAuth2Authentication_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMOAuth2SignIn_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMOAuth2ViewControllerTouch_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcher_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcherLogging_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcherService_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionUploadFetcher_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSynchronizationAsserts_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 

4つのフォルダのそれぞれからFirebaseライブラリと競合するファイルを削除します。これらの6つのファイルを削除する必要があります。 （これは、将来のバージョンで変更することができます。）

GTMLogger_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMNSDictionary+URLArguments_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcher_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcherLogging_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionFetcherService_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 
GTMSessionUploadFetcher_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.o 

が薄いファイルarmv7.a、i386.a、x86_64.aとarm64.aを削除します。

次のコマンドを実行して残りのオブジェクトファイルをシンファイルに結合します。

$ cd armv7 
$ libtool -static *.o -o armv7-new.a 
$ cd ../i386 
$ libtool -static *.o -o i386-new.a 
$ cd ../x86_64 
$ libtool -static *.o -o x86_64-new.a 
$ cd ../arm64 
$ libtool -static *.o -o arm64-new.a 

コピーし、新しく作成された薄いファイルのARMv7-new.a、I386-new.a、x86_64版-new.aとarm64-new.a新しい場所PATH_NEWへ。 PATH内の他のものはすべて削除できます。

次のコマンドを実行して、新しいシンファイルを新しいファットファイルに結合します。

$ cd PATH_NEW 
$ lipo -create armv7-new.a i386-new.a x86_64-new.a arm64-new.a -output GoogleSignInDependencies-new 

XcodeプロジェクトでGoogleSignInDependenciesの代わりに新しく生成されたGoogleSignInDependencies-newを使用します。

物事をより深く理解するには、次の記事を強くお勧めします。

http://atnan.com/blog/2012/01/12/avoiding-duplicate-symbol-errors-during-linking-by-removing-classes-from-static-libraries

Answer 2

本当の問題がされます。なぜあなたはココアポッドを使う代わりに直接コピーしていますか？実際にあなたのメソッドを使う利点はありません。 cocoapodsを使用する場合は、この問題はありません。私があなただったら、私はこれらのファイルを削除し、ココアポッドをインストールします。ココポッドをインストールするときにエラーの余地がはるかに少なくなります

Answer 3

あなたはこの問題を持っている場合、私はちょうど私のためにすべての作業を行いbashシェルスクリプトを書きました。私はそれをGistとして保存しました。自己責任で使用してください。