Linking OpenCV library in Xcode 4? - xcode

I've been having trouble compiling my own OpenCV iOS project. I started with a simple command-line app target and I've now added an iOS app target. The problem is that my iOS target produces the following linker error:
ld: library not found for -lcv
collect2: ld returned 1 exit status
Command
/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/llvm-g++-4.2
failed with exit code 1
I'm not sure where the flag, -lcv is coming from, as I haven't set it as any of the settings in my project's "Build Settings". I've downloaded a demo OpenCV iPhone project that compiles perfectly fine, and I've tried to copy the build settings from this project but I can't see what's different!
Thanks very much for any help.

Try adding in the project settings the path exact of the library since : /User/.....
important: only ONE ""

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Download from:
https://github.com/kudan-eu/Simple-Samples-iOS
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Please answer....
As the README instructions say:
In order for this sample project to work, you will need to download the KudanAR framework from the Kudan website. Then simply drop the framework into the root project directory and run the Xcode project.
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There is one class that uses BluetoothKit and it is called NPFBluetooth.
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The solution is to delete the content of your 'derived data' folder.
Works for frameworks installed with Carthage and cocoapods.....
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It's working for me ;)

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