title: iOS - Building VLC for iOS - Please install required SDK, or set SDKROOT manually
body: <p>I have upgraded my xcode to 4.5, now I am <strong>Building VLC for iOS</strong> and countered that SDK version 5.1 not found. I have fully installed all the sdk's in my xcode 4.5</p>
  
  <pre><code>Mac-Muhammad-Umair-Mirza:vlc muhammad.umair$ ./extras/package/ios/build.sh
  [info] Building libvlc for the iOS
  [info] Using armv7 with SDK version 5.1
  usage: dirname path
  SDKROOT not specified, assuming /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
  *** /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk does not exist, please install required SDK, or set SDKROOT manually. ***
  </code></pre>
  
  <p>Please help me out in finding the solution.</p>