Home/ Questions/Is it okay to fix the duplicate symbols for architecture x86_64 problem?
Next
Answered
Ellis Roberts
  • 22
Asked: 2022-05-18T16:42:32+00:00 In:

Is it okay to fix the duplicate symbols for architecture x86_64 problem?

  • 22

. Advertisement .

..3..

. Advertisement .

..4..

I get the “duplicate symbols for architecture x86_64” issue when trying to add -ObjC to the Other Linker Flags. Here is the detail of the error I got the error message:

/Users/nle/Library/Developer/Xcode/DerivedData/TestMoboSDK-Client-cgodalyxmwqzynaxfbbewrooymnq/Build/Intermediates/TestMoboSDK-Client.build/Debug-iphonesimulator/TestMoboSDK-Client.build/Objects-normal/x86_64/MoboSDK.o
  /Users/nle/Library/Developer/Xcode/DerivedData/TestMoboSDK-Client-cgodalyxmwqzynaxfbbewrooymnq/Build/Products/Debug-iphonesimulator/libMoboSDK.a(MoboSDK.o)
 duplicate symbol _OBJC_METACLASS_$_MoboSDK in:
  /Users/nle/Library/Developer/Xcode/DerivedData/TestMoboSDK-Client-cgodalyxmwqzynaxfbbewrooymnq/Build/Intermediates/TestMoboSDK-Client.build/Debug-iphonesimulator/TestMoboSDK-Client.build/Objects-normal/x86_64/MoboSDK.o
  /Users/nle/Library/Developer/Xcode/DerivedData/TestMoboSDK-Client-cgodalyxmwqzynaxfbbewrooymnq/Build/Products/Debug-iphonesimulator/libMoboSDK.a(MoboSDK.o)
 ld: 75 duplicate symbols for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Please give me some advice to solve this problem.

duplicate symbols
Share

2 Answers

  1. Best Answer
    Expert

    The cause: In my opinion, the cause of this error is that you have loaded same functions twice. As the problem goes away after deleting the -ObjC from Other Linker Flags, this option results ithat functions loads twice

    Solution: You can fix this error by changing ‘No Common Blocks’ from Yes to No ( under Targets->Build Settings->Apple LLVM – Code Generation )

    • 0

  2. My solution was to change ‘No Common Blocks” from Yes to No under Targets->Build Setting->Apple LLVM – Code Generation

    • 12

Leave an answer

You must login to add an answer.

Need An Account,