I am using Emgu.CV.monotouch which is giving an error in my project

1
votes

How to add Monotouch.AVFoundation Framework linking in Xamarin.ios project? Please can anyone tell me in detail? I need this because I am using Emgu.CV.Monotouch.dll which is giving errors as

MT5210: Native linking failed, undefined symbol: _AVCaptureSessionPresetMedium. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in.

Error MT5211: Native linking failed, undefined Objective-C class: _OBJC_CLASS_$_AVAssetWriterInputPixelBufferAdaptor. If '_OBJC_CLASS_$_AVAssetWriterInputPixelBufferAdaptor' is a protocol from a third-party binding, please check that it has the [Protocol] attribute in its api definition file, otherwise verify that all the necessary frameworks have been referenced and native libraries are properly linked in. (MT5211)

1
iosxamarin.ios

1 Answers

0
votes

The error message is telling you that the binding (the assembly) is out of date with the latest Xamarin.iOS version.

The new registrars available in 7.2.1 (and later) requires a bit more information (like the [Protocol] attributes) in order to work correctly (and solve a lot of small issues). Details on how to update the bindings are part of the links in the release notes (see earlier link).

It is possible to workaround this by (without fixing the bindings) using the --registrar:legacy option. That will effectively use the old registrars (and you won't get the benefits from the new ones). Again this is described in the release notes.