Question

我打算在我的应用中加入instaPDF和Avairy。我可以使用Xcode 4.6轻松下载和编译instaPDF。

我遇到的问题是，作为合并Aviary的一部分，我必须将“其他链接器标志”设置为“-ObjC -all_load”。一旦我设置我得到这些错误。如果我删除其他链接器标志一切都很好。当然，Aviary不会发射而且它会崩溃。

所以有两个问题

1）其他链接器标志有什么意义？将其设置为-ObjC -all_load

的含义是什么

2）有没有办法可以设置其他链接器标志并且仍然让instaPDF满意或这是否意味着没有Aviary和InstaPDF可以共存？

以下是错误。

Undefined symbols for architecture armv7:
  "_CVPixelBufferGetPixelFormatType", referenced from:
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetWidthOfPlane", referenced from:
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetHeightOfPlane", referenced from:
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferLockBaseAddress", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetBaseAddressOfPlane", referenced from:
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetBaseAddress", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetWidth", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetBytesPerRow", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetBytesPerRowOfPlane", referenced from:
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVBufferRetain", referenced from:
      -[CaptureDelegate captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_avfoundation.o)
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
  "_kCVPixelBufferPixelFormatTypeKey", referenced from:
      -[CvVideoCamera createVideoDataOutput] in opencv2(cap_ios_video_camera.o)
      -[CvVideoCamera createVideoFileOutput] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferGetHeight", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVPixelBufferUnlockBaseAddress", referenced from:
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
      -[CvVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_ios_video_camera.o)
  "_CVBufferRelease", referenced from:
      -[CaptureDelegate captureOutput:didOutputSampleBuffer:fromConnection:] in opencv2(cap_avfoundation.o)
      -[CaptureDelegate updateImage] in opencv2(cap_avfoundation.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

您需要链接CoreVideo框架以解析所有这些符号。

这是一个简单的伎俩。查看其中一个未定义的符号。复制符号（减去前导下划线）并将其输入到Xcode管理器中参考文档的搜索字段中。选择匹配的引用。滚动到参考页面的顶部。在页面顶部的标题中应该有一个框架条目。

InstaPDF和Aviary存在的问题

1 个答案: