我打算将instaPDF和Avairy合并到我的应用程序中。我可以使用Xcode 4.6很好地下载和编译instaPDF。
我遇到的问题是，作为合并Aviary的一部分，我必须将“其他链接程序标志”设置为“ -ObjC -all_load”。一旦设置好这些错误。如果删除其他链接器标记，一切正常。当然，鸟舍不会启动，它会崩溃。
所以两个问题
1）其他链接器标记有什么意义？将其设置为-ObjC -all_load是什么意思
2）有没有一种方法可以设置其他链接器标志并使instaPDF感到满意，或者这意味着没有Aviary和InstaPDF可以共存？
这是错误。
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)
最佳答案
您需要链接CoreVideo框架来解析所有这些符号。
这是一个简单的把戏。查看未定义的符号之一。复制符号（减去下划线），然后将其输入Xcode组织者中参考文档的搜索字段中。选择匹配的参考。滚动到参考页面的顶部。页面顶部的标题中应有一个Framework条目。