Xcode：找不到架构 armv7 的符号
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Xcode: symbol(s) not found for architecture armv7
提问by DuckDucking
I have this message from Xcode
我收到来自 Xcode 的这条消息
Ld /Users/myUsername/Library/Developer/Xcode/DerivedData/myApp-gqsubryokdmrjmczxeqypzcgpths/Build/Intermediates/myApp.build/Debug-iphoneos/myApp.build/Objects-normal/armv7/myApp normal armv7
cd /Users/myUsername/Documents/_IPAD/myApp
setenv IPHONEOS_DEPLOYMENT_TARGET 4.3
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk -L/Users/myUsername/Library/Developer/Xcode/DerivedData/myApp-gqsubryokdmrjmczxeqypzcgpths/Build/Products/Debug-iphoneos -F/Users/myUsername/Library/Developer/Xcode/DerivedData/myApp-gqsubryokdmrjmczxeqypzcgpths/Build/Products/Debug-iphoneos -filelist /Users/myUsername/Library/Developer/Xcode/DerivedData/myApp-gqsubryokdmrjmczxeqypzcgpths/Build/Intermediates/myApp.build/Debug-iphoneos/myApp.build/Objects-normal/armv7/myApp.LinkFileList -dead_strip -fobjc-arc -fobjc-link-runtime -miphoneos-version-min=4.3 -framework AudioToolbox -framework SystemConfiguration -framework QuartzCore -framework OpenAL -framework CoreGraphics -framework CFNetwork -framework MessageUI -framework CoreData -framework AVFoundation -framework StoreKit -framework UIKit -framework Foundation -o /Users/myUsername/Library/Developer/Xcode/DerivedData/myApp-gqsubryokdmrjmczxeqypzcgpths/Build/Intermediates/myApp.build/Debug-iphoneos/myApp.build/Objects-normal/armv7/myApp
Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_ViewController", referenced from:
objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
What exactly is not found? If it is saying that something was not found where is this not found stuff being looked for? Or in other words, if xcode is searching for something it is searching somewhere, where and what?
究竟是什么没有找到？如果它是说没有找到某些东西，那么在哪里寻找这个没有找到的东西？或者换句话说，如果 xcode 正在搜索某些东西，它正在搜索某处，在哪里搜索什么？
回答by Till
The ViewControllerobject is not found and it was referenced within AppDelegate. You do not link ViewController into your app. Check if your Compile Sourcessection within the Build Phasesof your project shows ViewController.m.
ViewController未找到该对象，并且在 中引用了该对象AppDelegate。您没有将 ViewController 链接到您的应用程序。检查您的项目中的Compile Sources部分是否Build Phases显示ViewController.m.
回答by nab
I just ran into this. Turns out I didn't add the new source to all of the targets that needed it. Maybe this will help someone in the future.. :)
我刚遇到这个。结果我没有将新源添加到所有需要它的目标中。也许这会在将来对某人有所帮助.. :)
回答by Ramis
I got same error after updating xCode 6beta to xCode 6.0.1. After spending a lot of time I fixed it by deleting "Derived Data" from Window -> Organizer -> Projects -> #Select project#and pressed Delete in the "Derived Data".
将 xCode 6beta 更新到 xCode 6.0.1 后，我遇到了同样的错误。花了很多时间后，我通过从窗口 -> 管理器 -> 项目 -> #Select project# 中删除“派生数据”来修复它，然后在“派生数据”中按下删除。
