IOS app wouldn't launch due to error "ld: 34 duplicate symbols for architecture x86_64"

Question

I tried doing a clean build, uninstalling/reinstalling pods, not too sure where to go to next.

I never received this error before, but I first got it when I tried integrating Firebase into my project. I made sure to add all of the correct pods, I then went ahead and added a few other Firebase pods, just in case. I'm not sure if it has anything to do with this, but here is what my pods file looks like.

# Uncomment the next line to define a global platform for your project
 platform :ios, '9.0'

target 'Effortflex' do
  # Comment the next line if you don't want to use dynamic frameworks
    use_frameworks!
    use_modular_headers!
  # Pods for Effortflex

  pod 'RealmSwift'
  pod 'IQKeyboardManagerSwift'
  pod 'Firebase'
  pod 'Firebase/Analytics'
  pod 'Firebase/Auth'
  pod 'Firebase/Core'
  pod 'Firebase/Firestore'
  pod 'FirebaseFirestoreSwift'

end

Here is a sample of the error...

    /Users/owner1/Library/Developer/Xcode/DerivedData/Effortflex-bmtqbbukvlosxpbraqoiwplpcfyj/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_encode.o
duplicate symbol '_pb_encode_fixed32' in:
    /Users/owner1/Library/Developer/Xcode/DerivedData/Effortflex-bmtqbbukvlosxpbraqoiwplpcfyj/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_encode 2.o
    /Users/owner1/Library/Developer/Xcode/DerivedData/Effortflex-bmtqbbukvlosxpbraqoiwplpcfyj/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/nanopb.build/Objects-normal/x86_64/pb_encode.o
ld: 34 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any help would be greatly apprecaited!

`use_modular_headers!` and `use_frameworks!` are not intended to be used together. `use_frameworks!` implies modular headers. — Paul Beusterien, Mar 24 '20 at 21:42

score 1 · Answer 1 · answered Jul 13 '20 at 16:57

1

Something that helped me was to the following -

In terminal navigate to your project folder
Run 'pod deintegrate'
Run 'pod install'

After that my project was able to compile. Hope that works for you!

answered Jul 13 '20 at 16:57

Patrick Ridd

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IOS app wouldn't launch due to error "ld: 34 duplicate symbols for architecture x86_64"

1 Answers1