React Native build failing: duplicate symbols for architecture arm64

[AliMeer]

Hi,

I am trying to use this module in a React Native project.

I have tried to build for ios and its failing with an error: "duplicate symbols for architecture arm64"
I am using node verison 14
React Native version 0.63
and the latest XCode version 12.3

More error output below:

13 duplicate symbols for architecture arm64

duplicate symbol 'OBJC_CLASS$_TcpSocketClient' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_METACLASS$_TcpSocketClient' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._tcpSocket' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._pendingSends' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol '_RCTTCPErrorDomain' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._lock' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._sendTag' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._clientDelegate' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSocketClient._id' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSocketClient.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSocketClient.o)
duplicate symbol 'OBJC_IVAR$_TcpSockets._clients' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSockets.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSockets.o)
duplicate symbol 'OBJC_CLASS$_TcpSockets' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSockets.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSockets.o)
duplicate symbol 'OBJC_METACLASS$_TcpSockets' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSockets.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSockets.o)
duplicate symbol 'OBJC_IVAR$_TcpSockets._counter' in:
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/TcpSockets/libTcpSockets.a(TcpSockets.o)
/Users/ali/Library/Developer/Xcode/DerivedData/HEXA-gsiembgiloupdqgkpctpopctnicw/Build/Products/Debug-iphoneos/react-native-tcp/libreact-native-tcp.a(TcpSockets.o)
ld: 13 duplicate symbols for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[jalesingh]

We are also getting the same error, please help.
@AliMeer : Have you resolved this issue ?

@aprock : Hey Buddy, check into this we already spend a lot of time :-(
We are using react-native-version: 0.63.2
react-native-tcp: 4.0.0
Xcode version: 12.4
mentioned below line in Podfile file as well
pod 'TcpSockets', :path => '../node_modules/react-native-tcp'

duplicate symbol 'OBJC_IVAR$_GCDAsyncSocket.socket6FD' in:
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/CocoaAsyncSocket/libCocoaAsyncSocket.a(GCDAsyncSocket.o)
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/TcpSockets/libTcpSockets.a(GCDAsyncSocket.o)
duplicate symbol 'OBJC_IVAR$_GCDAsyncSocket.socket4FD' in:
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/CocoaAsyncSocket/libCocoaAsyncSocket.a(GCDAsyncSocket.o)
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/TcpSockets/libTcpSockets.a(GCDAsyncSocket.o)
duplicate symbol 'OBJC_IVAR$_GCDAsyncSocket.connectInterface6' in:
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/CocoaAsyncSocket/libCocoaAsyncSocket.a(GCDAsyncSocket.o)
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/TcpSockets/libTcpSockets.a(GCDAsyncSocket.o)
duplicate symbol 'OBJC_IVAR$_GCDAsyncSocket.connectInterface4' in:
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/CocoaAsyncSocket/libCocoaAsyncSocket.a(GCDAsyncSocket.o)
/Users/anmol.d/Library/Developer/Xcode/DerivedData/ExperienceRIL-gtggcbtawqmfgsbadgsjuuckttel/Build/Products/Debug-iphonesimulator/TcpSockets/libTcpSockets.a(GCDAsyncSocket.o)
ld: 79 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[Overtorment]

you are posting to a project thats dead for 3.5 years.
i suggest you use https://www.npmjs.com/package/react-native-tcp-socket

[jalesingh]

@Overtorment Thanks Man, Now I switched to react-native-tcp-socket.

[AliMeer]

@jalesingh Apologies didn't see this message. I don't remember what I did to resolve this issue.
@Overtorment Thanks, will keep that in mind 👍