[Marble-devel] Using Marble library with Qt Embedded

[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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