qt Overview

Qt (pronounced "cute") is a cross-platform application development framework, widely used for the development of GUI programs (in which case it is known as a Widget toolkit), and also used for developing non-GUI programs such as console tools and servers. Qt is most notably used in KDE, the web browser Opera, Google Earth, Skype, Qtopia, Photoshop Elements and OPIE. It is produced by the Norwegian company Trolltech. Nokia made an offer to acquire Trolltech on January 28, 2008. Qt uses C++ with several non-standard extensions implemented by an additional pre-processor that generates standard C++ code before compilation. Qt can also be used in several other programming languages; bindings exist for Ada, C#, Java, Pascal, Perl, PHP (PHP-Qt), Ruby (RubyQt), and Python (PyQt). It runs on all major platforms, and has extensive internationalization support. Non-GUI features include SQL database access, XML parsing, thread management, network support and a unified cross-platform API for file handling.

Source: http://en.wikipedia.org/wiki/Qt_(toolkit)


QT 4.2.1 is installed in /usr/lib64/qt4. To use the vendor version when compiling, set QTDIR=/usr/lib64/qt4 . Another version is available via modulefiles. To access this version:
$ module load qt/4.8.7
Once the module has been loaded the QTLIB and QTINC environment variable can be used to build:
-I${QTINC) -L${QTLIB} -lQtCLucene lQtGui -lQtCore


  • 4.8.7
  • 5.3.2
  • 4.8.5