Ld: 4 duplicate characters for google's firevase armv7 architecture

Question

Using cocoa pods, install firebase:

target 'Ejemplo' do pod 'MOCA' pod 'Firebase/Auth' end 

Intall cocoa pods But when I try to compile

Ld / Users / dortiz / Library / Developer / Xcode / DerivedData / Ejemplo-hknorfqqubdrwxbrvosftrtmrnle / Build / Products / Debug-iphoneos / Ejemplo.app / Ejemplo normal armv7 cd / Users / dortiz / Documents / BEACploTempone2 export PATH = "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.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 armv7 -isysroot / Applications / Xcode.app / Contents /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.2.sdk -L / Users / dortiz / Library / Developer / Xcode / DerivedData / EJEMPLO-hknorfqqubdrwxbrvosftrtmrnle / Build / Products / Debug-iphoneosiz / Library / Developer / Xcode / DerivedData / EJEMPLO-hknorfqqu bdrwxbrvosftrtmrnle / Build / Products / Debug-iphoneos / GTMSessionFetcher -L / Users / dortiz / Library / Developer / Xcode / DerivedData / EJEMPLO-hknorfqqubdrwxbrvosftrtmrnle / Build / Products / Debug-iphoneos / dacodobodlfor / docs / googlebox Ejemplo / Ejemplo / Pods / MOCA -F / Users / dortiz / Library / Developer / Xcode / DerivedData / Ejemplo-hknorfqquddwwbbrfsvtrtmrnle / Build / Products / Debug-iphoneos -F / Users / dortiz / Documents / BeacOns EJPL FirebaseAnalytics / Frames / Frames -F / Users / dortiz / Documents / Beacons / EJEMPLO / EJEMPLO / pods / FirebaseAuth / Frames / frames -F / Users / dortiz / Documents / Beacons / EJEMPLO / EJEMPLO / pods / FirebaseCore / Frames Users / dortiz / Documents / Beacons / EJEMPLO / EJEMPLO / pods / FirebaseInstanceID / Frames / frames -F / Users / dortiz / Documents / Beacons / EJEMPLO / EJEMPLO / pods / GoogleInterchangeUtilities / Frames / frames -F / Users / dortiz / Documents / Beacons / EJEMPLO / EJEMPLO / pods / GoogleSymbolUtilities / Frames / file frames / Users / dortiz Library / Developer / Xcode / DerivedData / Ejemplo -hknorfqqubdrwxbrvosftrtmrnle / Build / Intermediates / Ejemplo.build / Debug-iphoneos / Ejemplo.build / Objects-normal / armv7 / Ejemplo.LinkFileList -Xlinkerrlinklinker-xlinker version-min = 10.2 -dead_strip -Xlinker -object_path_lto -Xlinker / Users / dortiz / Library / Developer / Xcode / DerivedData / Ejemplo-hknorfqqubdrwxbrvosftrtmrnle / Build / Intermediates / Ejemplo.build / Debjp-iphoneos normal armv7 / Ejemplo_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -fembed-bitcode-marker -fobjc-arc -fobjc-link-runtime -ObjC -all_load -lGTMSessionFetcher -lGoogleToolboxForMacllOCALIB te3 -lz -framework AddressBook -framework AudioToolbox -framework CoreBluetooth - framework CoreLocation -framework CoreTelephony -framework FirebaseAnalytics -framework FirebaseAuth -framework FirebaseCore -framework FirebaseInstanceID -frameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworkFrameworks StoreKit -framework SystemConfiguration -framework UIKit -lsqlite3.0 -lPods-Ejemplo -Xlinker -dependency_info -Xlinker / Users / dortiz / Library / Developer / Xcode / DerivedData / Ejemplo -hknorfqqubdrwxbrvosftrildmdbjdlfmdbm Ejemplo.build/Objects-normal/armv7/Ejemplo_dependency_info.dat -o / Users / dortiz / Library / Developer / Xcode / DerivedData / Ejemplo-hknorfqqubdrwxbrvosftrtmrnle / Build / Products / Debugjposlooapplo iphone /

Duplicate the _GSDK_NSClassFromString symbol in: /Users/dortiz/Documents/BEACONS/Ejemplo/Ejemplo/Pods/FirebaseCore/Frameworks/FirebaseCore.framework/FirebaseCore(overload_560emploments docs2) /Frameworks/frameworks/GoogleSymbolUtilities.framework/GoogleSymbolUtilities(overload.o) backup in the character _GSDK_objc_getClass: /Users/dortiz/Documents/BEACONS/Ejemplo/Ejemplo/Pods/FirebaseCore/Frameworks/FirebaseCore.framework/FirebaseCore(overload_56070eb5aec147705560f2b7c064869c.o) / Users / dortiz / Documents / BEACONS / Ejemplo / Ejemplo / Pods / GoogleSymbolUtilities / Frameworks / frameworks / GoogleSymbolUtilities.framework / GoogleSymbolUtilities (overload.o) duplicate character _GSDK_objc_getProtocol in: / Users / demjloppels / documents / ejemplodes / documents / documents / ecomplodes / documents FirebaseCore / Frameworks / FirebaseCore.framework / FirebaseCore (overload_56070eb5aec147705560f2b7c0648 69c.o) /Users/dortiz/Documents/BEACONS/Ejemplo/Ejemplo/Pods/GoogleSymbolUtilities/Frameworks/frameworks/GoogleSymbolUtilities.framework/GoogleSymbolUtilities(overload.o / duplicate _GSDizploments_clocks_classes_classes docs_objects docs_objects docs_objects /Ejemplo/Pods/FirebaseCore/Frameworks/FirebaseCore.framework/FirebaseCore(overload_56070eb5aec147705560f2b7c064869c.o) /Users/dortiz/Documents/BEACONS/Ejemplo/Ejemplo/Pods/GoogleSymbolUtilities/Frameworks/frameworks/GoogleSymbolUtilities.framework/GoogleSymbolUtilities(overload.o) ld: 4 duplicate characters for armv7 architecture clang: error: linker command with exit code 1 (use -v to call the call)

Done, I clean and reinstall the containers. To import only firebase, use @import Firebase;

Answer 1

This seems like a bug in the Firebase 3.11.1 build.

Try backing up to Firebase 3.11.0 by adding the following to your file:

 pod 'Firebase/Analytics', '3.11.0' 

Update: February 14, 2017: Firebase 3.13.0 released today should fix the duplicate character issue.

Answer 2

Which helped me in Build Settings for the project file (blue), and in Other Linker Flags make sure you do not have -ObjC -all_load manually. They are not required when using the Objective-C and Cocoapods modules, because Cocoapods will correctly add the necessary flags to your target.

Answer 3

you just need to remove the -all-load flag from the “other linker flag” both in the project settings and in the target settings