title: Zxing with Xcode 4
body: <p>I am using zxing Framework in my new project for QRcode scanning.
  I followed all the instructions from this link give bu google
   <a href="http://zxing.googlecode.com/svn/trunk/iphone/README" rel="nofollow">http://zxing.googlecode.com/svn/trunk/iphone/README</a>.
  But still its throwing errors below</p>
  
  <p>Build target BusinessCard of project BusinessCard with configuration Debug</p>
  
  <blockquote>
    <p>Ld /Users/innoppltechnologies/Library/Developer/Xcode/DerivedData/BusinessCard-gapnbrefvettfmgtnizgctiusbsn/Build/Intermediates/BusinessCard.build/Debug-iphoneos/BusinessCard.build/Objects-normal/armv6/BusinessCard normal armv6
        cd /Users/innoppltechnologies/iosapps/BusinessCard
        setenv IPHONEOS_DEPLOYMENT_TARGET 4.0
        setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
        /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-g++-4.2 -arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk -L/Users/innoppltechnologies/Library/Developer/Xcode/DerivedData/BusinessCard-gapnbrefvettfmgtnizgctiusbsn/Build/Products/Debug-iphoneos -L/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.3.sdk/usr/lib -L/Users/innoppltechnologies/iosapps/BusinessCard -
    Undefined symbols for architecture armv6:
      "_CVPixelBufferGetHeight", referenced from:
          -[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)
      "_kCVPixelBufferPixelFormatTypeKey", referenced from:
          -[ZXingWidgetController initCapture] in libZXingWidget.a(ZXingWidgetController.o)
      "_CVPixelBufferGetBaseAddress", referenced from:</p>
  </blockquote>
  
  <pre><code>ld: symbol(s) not found for architecture armv6
  collect2: ld returned 1 exit status
  </code></pre>
  
  <hr>
  
  <p>Thanks in advance </p>