希望你们知道如何解决这个问题。我可能只需要在链接二进制文件中添加一个框架，但我真的找不到要添加的框架。
Ld的 /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Products/Debug-iphonesimulator/Sum.app/Sum 正常的i386 cd / Users / Chrismac / Documents / Sum export IPHONEOS_DEPLOYMENT_TARGET = 7.1 export PATH =“/ Applications / Xcode.app / Contents / Developer / Platforms / iPhoneSimulator.platform / Developer / usr / bin：/Applications/Xcode.app/Contents/Developer/usr/bin：/ usr / bin：/ bin： / usr / sbin目录：/ sbin目录” /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk -L /用户/ Chrismac /库/开发商/ Xcode中/ DerivedData /加总cyzxwtuyfesisgfvermcafpbmtgv /编译/产品/调试，iphonesimulator -F /用户/ Chrismac /库/开发商/ Xcode中/ DerivedData /加总cyzxwtuyfesisgfvermcafpbmtgv /编译/产品/调试，iphonesimulator -filelist /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/Sum.LinkFileList -Xlinker -objc_abi_version -Xlinker 2 -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min = 7.1 -framework CoreGraphics -framework UIKit -framework Foundation -Xlinker -dependency_info -Xlinker / Users / Chrismac /Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/Sum_dependency_info.dat -o / Users / Chrismac / Library / Developer / Xcode /DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Products/Debug-iphonesimulator/Sum.app/Sum
重复符号_PressIt in： /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/SecondViewController.o /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/FirstViewController.o 重复符号_push in： /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/SecondViewController.o /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/FirstViewController.o 重复符号_savedData： /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/SecondViewController.o /Users/Chrismac/Library/Developer/Xcode/DerivedData/Sum-cyzxwtuyfesisgfvermcafpbmtgv/Build/Intermediates/Sum.build/Debug-iphonesimulator/Sum.build/Objects-normal/i386/FirstViewController.o ld：架构i386 clang的3个重复符号：错误：链接器 命令失败，退出代码为1（使用-v查看调用）
答案 0 :(得分：1)
你不是缺少一个lib但你有两个叫做Pressit，Push和SavedData的C函数冲突！
重复的符号位于FirstViewController＆amp; SecondViewController。
不要两次实现相同的功能：
答案 1 :(得分：0)
我想，您可能已在项目中实施过三次FirstViewController。
在整个项目中搜索FirstViewController，并为项目保留一个FirstViewController。