架构armv7的未定义符号,ld:未找到架构armv7的符号 - 怎么办？

Question

我已经阅读了很多关于SO的帖子,并且所提出的解决方案都没有为我工作.我希望那些对解释错误有更多了解的人可以提供帮助.

我的应用程序一直运行良好(现在仍然如此),但是当使用某个类'iCarousel'时,我遇到了一个问题,这是一个Cover Flow的实现.

这是有趣的事情:当打开iCarousel的示例项目时,它在我的iPhone上正常运行.我的应用程序(在一个单独的项目中)也运行良好.他们都使用armv6 armv7 架构并在iOS 5.1上运行.

然后我将类复制到我自己的项目并添加所有必要的框架.还没有错误.但是当我构建并运行时,我收到一个错误:

Ld /Users/Sooper/Library/Developer/Xcode/DerivedData/TestApp-
ejfsezvwxyxhqpanwwrcmsbkslxi/Build/Intermediates/TestApp.build/Debug-
iphoneos/TestApp.build/Objects-normal/armv7/TestApp normal armv7

    cd "/Users/Sooper/Developer/TestApp v1.0"
    setenv IPHONEOS_DEPLOYMENT_TARGET 5.0
    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/iPhoneOS5.1.sdk
 -L/Users/Sooper/Library/Developer/Xcode/DerivedData/TestApp-ejfsezvwxyxhqpanwwrcmsbkslxi/Build/Products/
Debug-iphoneos -F/Users/Sooper/Library/Developer/Xcode/DerivedData/TestApp-ejfsezvwxyxhqpanwwrcmsbkslxi/Build/Products/
Debug-iphoneos -filelist /Users/Sooper/Library/Developer/Xcode/DerivedData/TestApp-ejfsezvwxyxhqpanwwrcmsbkslxi/Build/Intermediates/TestApp.build/
Debug-iphoneos/TestApp.build/Objects-normal/armv7/TestApp.LinkFileList -dead_strip -miphoneos-
version-min=5.0 -lz -framework QuartzCore -framework CoreGraphics -framework 
SystemConfiguration -lxml2.2.7.3 -framework Security -framework CoreMedia -framework Accounts 
-framework CoreFoundation -framework AudioToolbox -framework AVFoundation -framework Twitter -
framework MediaPlayer -framework UIKit -framework Foundation -o 
/Users/Sooper/Library/Developer/Xcode/DerivedData/TestApp-
ejfsezvwxyxhqpanwwrcmsbkslxi/Build/Intermediates/TestApp.build/Debug-
iphoneos/TestApp.build/Objects-normal/armv7/TestApp

在此之下:

Undefined symbols for architecture armv7:
  "_OBJC_CLASS_$_ArtworkScrollerViewController", referenced from:
      objc-class-ref in TestAppViewController.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

如果我删除了类的实例,则错误消失并且应用程序运行.我完全糊涂了.为什么它会单独工作而不能在另一个项目中工作？

非常感谢一些指导.

Answer 1

确保将ArtworkScrollerViewController.m添加到您正在构建的目标