Error: The architecture arm64 has duplicate symbols in React-Native

I am encountering an issue in my React-Native project after installing vision-camera-code-scanner. When attempting to build the project in XCode, I am faced with the following error message:

duplicate symbol '_OBJC_CLASS_$_GDTCCTCompressionHelper' in:
    /Users/XXX/Library/Developer/Xcode/DerivedData/XXX-xxx/Build/Products/Debug-iphoneos/GoogleDataTransport.o
    /Users/XXX/Library/Developer/Xcode/DerivedData/XXX-xxx/Build/Products/Debug-iphoneos/GoogleDataTransport/libGoogleDataTransport.a(GDTCCTCompressionHelper.o)

duplicate symbol '_OBJC_METACLASS_$_GDTCCTCompressionHelper' in:
    /Users/XXX/Library/Developer/Xcode/DerivedData/XXX-xxx/Build/Products/Debug-iphoneos/GoogleDataTransport.o
    /Users/XXX/Library/Developer/Xcode/DerivedData/XXX-xxx/Build/Products/Debug-iphoneos/GoogleDataTransport/libGoogleDataTransport.a(GDTCCTCompressionHelper.o)
[...]
ld: 105 duplicate symbols for architecture arm64

Upon reviewing the log, it appears that the duplicate symbols are found in these files:

GoogleDataTransport.o
libGoogleDataTransport.a

GoogleUtilities_Environment.o
libGoogleUtilities.a

GoogleUtilities_Logger.o
libGoogleUtilities.a

GoogleUtilities_UserDefaults.o
libGoogleUtilities.a

FBLPromises.o
libPromisesObjC.a

I have attempted to identify and remove duplicate files without success: https://i.sstatic.net/Iw74E.png

Being new to React-Native, I am seeking guidance on resolving this duplicate symbols error. Any suggestions would be greatly appreciated.

javascriptiosxcodereact-nativeduplicate-symbol

Answer №1

There could be several reasons for the issue at hand.

  • It is possible that you have accidentally linked the file twice, resulting in a duplicate entry in the specified path.

Alternatively,

  • You might be attempting to link two different files with identical names.

The error message provided is quite general, so it could also be due to other factors. I recommend checking the specified path for any files with matching names and extensions, or verifying if the file is linked twice in the Compile resources section.

To access the Compile resources path, visit:

Answer №2

Follow these instructions

  1. Execute 
    rm -rf ~/Library/Developer/Xcode/DerivedData/*
    to eliminate DerivedData
  2. Erase the ios/pods directory
  3. Delete the ios/build directory
  4. Get rid of Podfile.lock
  5. If necessary, remove the DEAD_CODE_STRIPPING option from 
    ios/app.xcodeproj/project.pbxproj
  6. Run pod install and attempt a rebuild

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