iOS Clang 错误-Xcode5答案

【问题标题】：iOS Clang error-Xcode5iOS Clang 错误-Xcode5
【发布时间】：2014-01-03 06:06:53
【问题描述】：

我在 google 和 stackoverflow 上看到了几篇与此错误相关的帖子，我已经阅读了所有帖子，但仍然遇到问题，我很高兴找到解决方案。这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: error: 链接器命令失败，退出代码为 1（使用 -v 查看调用）

【问题讨论】：

我尝试在构建阶段检查 .m 文件。一切都很完美。

标签： ios objective-c xcode5

【解决方案1】：

我假设您的项目目录中有重复文件，请检查您的项目的
Build Phases>Compile Sources 并查看是否存在两个以上同名的文件

【讨论】：

检查了兄弟一切都很完美。