qt4-demos-dbg 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu4 (arm64 binary) in ubuntu vivid

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This package contains the debugging symbols for the Qt 4 examples and
 demos.