always report "clang: error: linker command failed with exit code 1 (use -v to see invocation)" during build

Question

always report "clang: error: linker command failed with exit code 1 (use -v to see invocation)" during build

samye1976 opened this issue 9 years ago · 4 comments

samye1976 commented 9 years ago

after pod install, I open the DragonFrame and DragonPhotos project in the XCODE 7, then build failed, the error is as following:

duplicate symbol OBJC_IVAR$_AsyncSocket.theContext in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncWritePacket.timeout in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.timeout in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.startOffset in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_CLASS$_AsyncSocket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_METACLASS$_AsyncSocket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_CLASS$_AsyncSpecialPacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_METACLASS$_AsyncSpecialPacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_CLASS$_AsyncWritePacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_METACLASS$_AsyncWritePacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_CLASS$_AsyncReadPacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_METACLASS$_AsyncReadPacket in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSpecialPacket.tlsSettings in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theFlags in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theRunLoopModes in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.bufferOwner in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theConnectTimer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theWriteTimer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theReadTimer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncWritePacket.buffer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.buffer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.partialReadBuffer in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theRunLoop in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol _AsyncSocketException in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol _AsyncSocketErrorDomain in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.term in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theWriteStream in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theReadStream in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.maxLength in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.originalBufferLength in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.readLength in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncWritePacket.tag in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.tag in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theWriteQueue in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theReadQueue in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theCurrentWrite in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theDelegate in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncWritePacket.bytesDone in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncReadPacket.bytesDone in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theCurrentRead in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theUserData in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theNativeSocket6 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theSocket6 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theSource6 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theNativeSocket4 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theSocket4 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
duplicate symbol OBJC_IVAR$_AsyncSocket.theSource4 in:
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCerfing.a(AsyncSocket.o)
/Users/samye/Library/Developer/Xcode/DerivedData/DragonPhotos-hjhzmyhvtsyagxfeorhhsjmjhxig/Build/Products/Debug-iphoneos/libCocoaAsyncSocket.a(AsyncSocket.o)
ld: 47 duplicate symbols for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1 · 2016-02-18T09:49:12.000Z

I have the same problem.

Answer 2 · 2016-02-18T16:36:23.000Z

'Cerfing' pod contains duplicate of AsyncSocket.h.

Quick and dirty workaround is to delete it from Pods sources.

Answer 3 · 2016-02-24T17:17:49.000Z

This is due to a change in Cerfing recently, my apologies! Will update as soon as I can. Thanks for the report!

Answer 4 · 2016-03-30T05:26:14.000Z

I have pushed a new release of Cerfing which fixes this problem. Thanks for the bug report, and thanks for your patience, @samye1976!