This is the Mac way; applications are packaged in bundles. It avoids DLL hell but at a cost in disk space. At least you know that installing a new application won't mean updating a library to a version incompatible with another app.
Please see http://doc.qt.nokia.com/4.7/deployment.html
You dynamically link to the QT libs and include them in the bundle; GPL/LGPL satisfied. However, the Mac store may place other restrictions on top that are not compatible with copyleft licensing, re: http://www.theregister.co.uk/2010/05..._apple_itunes/
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