[Marble-devel] Using Marble library with Qt Embedded

[Dennis Nienhüser]

Hi,

can you try whether using the plain.dgml theme 
("earth/plain/plain.dgml") instead of openstreetmap.dgml helps? This map 
theme does not have any texture layers. The texture layers make use of 
threads as well.

Regards,
Dennis

Am 23.05.2012 15:36, schrieb Jeremie Scheer:
> Hi,
>
> Thank you for your answer.
>
> Unfortunately it doesn't seem to be the plugins that cause the thread 
> issue.
> I tried what you suggested me to do but I always run into the same 
> error with QMutex.
>
> It is the same error that makes my application crash in a Qt Virtual 
> Framebuffer or on ARM platform.
>
> Regards,
> -- 
> Jérémie Scheer
> Software Engineer
> Tel: +33 (0)9 72 29 41 44
> Fax: +33 (0)9 72 28 79 26
> Armadeus Systems - A new vision of the embedded world
> http://www.armadeus.com
>
>
> On 05/23/2012 01:25 PM, Dennis Nienhüser wrote:
>> I started looking into it yesterday but Qt Embedded wasn't compiling 
>> on my system due to some known bug where glib and webkit interfere.
>>
>> I'd suggest trying to move all marble plugins away first (just remove 
>> them from lib/marble/plugins in the installation directory of marble) 
>> and see if that changes things. Might be some threading issue, the 
>> parser plugins working on startup for example run in their own thread 
>> each.
>>
>> Regards,
>> Dennis
>>
>> Am 23.05.2012 11:12, schrieb Jeremie Scheer:
>>> Any idea ?
>>>
>>> Is it simply possible to use Marble in a Qt Virtual Framebuffer with 
>>> Qt Embedded ?
>>>
>>> I think it should be, because I found this link on the Internet 
>>> http://wm161.net/2008/07/26/marble-under-qtembedded-linux/ . A 
>>> little bit old but it shows that Marble could run under Qt Embedded.
>>>
>>> I can't see what is the origin of the bug because I've no QThread or 
>>> QMutex in my application. It can only come from the compilation of 
>>> Marble...
>>>
>>> My Qt Embedded is configured like this:
>>>
>>>     configure -embedded x86_64 -no-cups -no-nis -depths 16,18 -qvfb
>>>     -prefix /usr/local/Trolltech/QtEmbedded-4.7.2 -glib
>>>     -confirm-license -qt-sql-sqlite
>>>
>>>
>>> And I configure Marble to build against Qt like this:
>>>
>>>     PATH=/usr/local/Trolltech/QtEmbedded-4.7.2/bin:$PATH cmake
>>>     -DQTONLY=ON ../marble_qvfb/
>>>
>>>
>>> Regards,
>>>
>>> Jérémie SCHEER
>>>
>>>
>>> On 05/22/2012 04:13 PM, Jeremie Scheer wrote:
>>>> Hi,
>>>>
>>>> I'm currently trying to use a Marble library built against _Qt 
>>>> 4.7.4 Embedded x86_.
>>>>
>>>> My application using Marble is built against the same Qt and is 
>>>> running in a Qt Virtual Framebuffer with a QWS Server.
>>>>
>>>> In the Qt project file, I simply added : /LIBS = -lmarblewidget/ to 
>>>> link with Marble. And when running the application, I defined the 
>>>> environment variable /LD_LIBRARY_PATH=/usr/local/lib/ where Marble 
>>>> libraries are installed.
>>>>
>>>> The problem is : when I run the application, before any instruction 
>>>> can be executed, it crashes on :
>>>>
>>>> QMutex::lock: Deadlock detected in thread 0x7f1fe30bb740
>>>>
>>>>
>>>> Here is my application code :
>>>>
>>>>     #include <QtGui/QApplication>
>>>>     #include <marble/MarbleWidget.h>
>>>>     #include <marble/MarbleModel.h>
>>>>     #include <marble/global.h>
>>>>     #include <QWSServer>
>>>>
>>>>     using namespace Marble;
>>>>
>>>>     int main(int argc, char** argv)
>>>>     {
>>>>         QApplication app(argc,argv);
>>>>         QWSServer *sw =  QWSServer::instance ();
>>>>
>>>>         // Create a Marble QWidget without a parent
>>>>         MarbleWidget *mapWidget = new MarbleWidget();
>>>>
>>>>         // Load the OpenStreetMap map
>>>>        
>>>>     mapWidget->setMapThemeId("earth/openstreetmap/openstreetmap.dgml");
>>>>         mapWidget->setProjection(Mercator);
>>>>
>>>>         mapWidget->show();
>>>>
>>>>         return app.exec();
>>>>     }
>>>>
>>>>
>>>> If I build the same application (without the QWS Server) and Marble 
>>>> against Qt x86, it works well.
>>>>
>>>> Is there anything I did wrong with Qt Embedded ?
>>>>
>>>> Thanks,
>>>> -- 
>>>> Jérémie Scheer
>>>> Software Engineer
>>>> Tel: +33 (0)9 72 29 41 44
>>>> Fax: +33 (0)9 72 28 79 26
>>>> ARMadeus Systems - A new vision of the embedded world
>>>> http://www.armadeus.com
>>>>
>>>>
>>>> _______________________________________________
>>>> Marble-devel mailing list
>>>> Marble-devel at kde.org
>>>> https://mail.kde.org/mailman/listinfo/marble-devel
>>>
>>>
>>> -- 
>>> Jérémie Scheer
>>> Software Engineer
>>> Tel: +33 (0)9 72 29 41 44
>>> Fax: +33 (0)9 72 28 79 26
>>> ARMadeus Systems - A new vision of the embedded world
>>> http://www.armadeus.com
>>>
>>>
>>> _______________________________________________
>>> Marble-devel mailing list
>>> Marble-devel at kde.org
>>> https://mail.kde.org/mailman/listinfo/marble-devel
>>
>>
>>
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>
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