Qt 5.5 basic support

Reinier Millo Sánchez rmillo at ...210...
Tue Dec 8 03:15:09 CET 2015

Hi Genode Comunity

We want to share our basic support of QT 5.5 on GenodeOS. The on going 
development is in our GenodeOS fork at Github:


We worked to support the basic elements of Qt, based on the support of 
Qt 5.1. This work is not finished yet, but it can be used by the 
community. Based on the support of Qt 5.1 we have reorganized a bit the 
Qt modules, acording the modules on Qt 5.5.
This is the list of the components supported and a list of examples of 
Qt that we have tested on GenodeOS:

  * Qt Core
      o qt5_core_contiguouscache.run
      o qt5_core_savegame.run
      o qt5_core_semaphores.run
      o qt5_core_waitconditions.run
  * Qt Gui
      o qt5_gui_analogclock.run
      o qt5_gui_openglwindow.run
      o qt5_gui_rasterwindow.run
  * Qt Widgets
      o qt5_widgets_animatedtiles.run
      o qt5_widgets_appchooser.run
      o qt5_widgets_calculator.run
      o qt5_widgets_chart.run
      o qt5_widgets_digitalclock.run
      o qt5_widgets_dynamiclayouts.run
      o qt5_widgets_elasticnodes.run
      o qt5_widgets_lighting.run
      o qt5_widgets_mainwindow.run
      o qt5_widgets_moveblocks.run
      o qt5_widgets_pathstroke.run
      o qt5_widgets_puzzle.run
      o qt5_widgets_sliders.run
      o qt5_widgets_standarddialogs.run
      o qt5_widgets_stickman.run
      o qt5_widgets_tetrix.run
      o qt5_widgets_textedit.run
      o qt5_widgets_trafficlight.run
      o qt5_widgets_undo.run
  * Qt Network
      o qt5_network_dnslookup.run
      o qt5_network_fortuneserver.run
      o qt5_network_threadedfortuneserver.run
  * Qt Websockets
      o qt5_websockets_echoserver.run
      o qt5_websockets_simplechat.run
  * Qt Xml
      o qt5_xml_dombookmarks.run
      o qt5_xml_htmlinfo.run
      o qt5_xml_xmlstreamlint.run

At this point we are having some troubles in the support. In some 
examples, we are getting this message when the Qt application finished

    unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid
    signal-context capability

On the XML module, there  is a little problem, I think that Qt isn't 
recognizing the EOF in the XMLs files. Have tested it and it parse the 
XML file but fails at EOF. I'm reviewing this trying to fix it on Qt or 
the libc integration with Qt. The UDP sockets are not working on 
GenodeOS yet.
We are planning continue working on the other Qt modules.
If someone have any suggestion to our support problems, or is interested 
to help us in the support of Qt 5.5  is welcome.

Best regards

Lic. Reinier Millo Sánchez
Centro de Estudios de Informática
Universidad Central "Marta Abreu" de Las Villas
Carretera a Camajuaní Km 5 1/2
Santa Clara, Villa Clara, Cuba
CP 54830

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   antes de hablar ... escucha;
  antes de escribir ... piensa;
   antes de herir ... siente;
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