libqt4-debug-dev 4.1.2-1ubuntu1 (i386 binary) in ubuntu dapper

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This packages contains the header files and programs used for building
 debugging versions of Qt applications.
 .
  Homepage: http://www.trolltech.com