Question

我想知道如何解决这些链接器错误......

Ld ... normal armv7
cd ...
setenv IPHONEOS_DEPLOYMENT_TARGET 7.0
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/iPhoneOS7.0.sdk -L...-esjhccmwalrxrdfeduounwwkhaef/Build/Products/Debug-iphoneos -F ...-esjhccmwalrxrdfeduounwwkhaef/Build/Products/Debug-iphoneos -filelist ...-esjhccmwalrxrdfeduounwwkhaef/Build/Intermediates/... -dead_strip -fobjc-arc -fobjc-link-runtime -miphoneos-version-min=7.0 -framework AVFoundation -framework UIKit -framework Foundation -framework CoreGraphics -Xlinker -dependency_info -Xlinker ...

Undefined symbols for architecture armv7:
  "_kCVPixelBufferPixelFormatTypeKey", referenced from:
  -[MyAVController setupCapture] in AVController.o
  "_CATransform3DIdentity", referenced from:
  -[MyAVController setupCapture] in AVController.o
  "_CMSampleBufferGetImageBuffer", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_kCAGravityResizeAspectFill", referenced from:
  -[MyAVController setupCapture] in AVController.o
  "_CVPixelBufferLockBaseAddress", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_CVPixelBufferGetWidth", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_CVPixelBufferGetBytesPerRow", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_CVPixelBufferGetBaseAddress", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_CATransform3DRotate", referenced from:
  -[MyAVController setupCapture] in AVController.o
  "_OBJC_CLASS_$_CALayer", referenced from:
  objc-class-ref in AVController.o
  "_CVPixelBufferGetHeight", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
  "_CVPixelBufferUnlockBaseAddress", referenced from:
  -[MyAVController captureOutput:didOutputSampleBuffer:fromConnection:] in AVController.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我知道我需要添加一些框架，但我无法弄清楚是什么。

如果您需要任何其他信息，我可以提供。谢谢！

Answer 1

看起来您忘记将一些框架导入到您的项目中：即AVFoundation框架。

Answer 2

好像你没有导入框架如果你不知道怎么做这是一步一步的指南

Yous应该添加CoreVideo，CoreMedia框架和AVFoundation。

http://thinketg.com/xcode-4-tips-adding-frameworks-to-your-project/

Apple Mach-O链接器错误

2 个答案: