iOS克隆错误-Xcode5

Question

我已经在google和stackoverflow上看到了几篇与这个错误相关的帖子，我已经阅读了所有的帖子，但仍然在寻找问题的答案，我将很高兴得到一个解决方案。以下是我在编译时收到的错误消息。

duplicate symbol _OBJC_IVAR_$_crc_assess_q1.answers in:
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q2.o
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q1.o
duplicate symbol _OBJC_IVAR_$_crc_assess_q1._assessQuestion1Label in:
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q2.o
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q1.o
duplicate symbol _OBJC_IVAR_$_crc_assess_q1._answer1Table in:
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q2.o
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q1.o
duplicate symbol _OBJC_CLASS_$_crc_assess_q1 in:
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q2.o
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q1.o
duplicate symbol _OBJC_METACLASS_$_crc_assess_q1 in:
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q2.o
    /Users/somefolder/Library/Developer/Xcode/DerivedData/CRC-cwtaapkjcvsdiaddtmdolovjtsgf/Build/Intermediates/CRC.build/Debug-iphonesimulator/CRC.build/Objects-normal/i386/crc_assess_q1.o
ld: 5 duplicate symbols for architecture i386

clang:错误:链接器命令失败，退出代码为%1(使用-v查看调用)

Answer 1

我假设您的项目目录中有重复的文件，请检查

项目的Build Phases>Compile Sources，并查看是否有两个以上的同名文件