We have received reports of difficulty linking libbardecode.a under XCode 4.5 GM, despite the fact that it worked ok under XCode 4.5 DP2. The following article gives some more detail:
http://macindie.com/2012/09/ios6-xcode4-5-vs-3rd-party-sdks/
We are currently working on a resolution to the problem and will update this page as soon as news becomes available.
