iOS9 linker errors in xcode

Hello.
I'm trying to test my application on iOS9 device (iPad 2 and iPhone 5S)
In Unity it builds fine, then in XCode I got these link errors:

Undefined symbols for architecture arm64:

  "_AVCaptureDeviceTypeBuiltInWideAngleCamera", referenced from:

      l4365 in libVuforia.a(libVuforia.a-arm64-master.o)

      l4369 in libVuforia.a(libVuforia.a-arm64-master.o)

  "___isOSVersionAtLeast", referenced from:

      l4304 in libVuforia.a(libVuforia.a-arm64-master.o)

      l4337 in libVuforia.a(libVuforia.a-arm64-master.o)

      l4354 in libVuforia.a(libVuforia.a-arm64-master.o)

      l4365 in libVuforia.a(libVuforia.a-arm64-master.o)

      l4369 in libVuforia.a(libVuforia.a-arm64-master.o)

ld: symbol(s) not found for architecture arm64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

I tried updating XCode from 7.3 to 9.4, but same problem.
Does anybody know the solution to this?

 

solved, that was because of xcode 7 not properly updated to 9..