Qt cross developement

[Hilpara]

I have "succesfully" run the bakeqtpi script to get all necessary files for cross compiling Qt things to Pi. I have also configured Qt Creator accordingly. Compiling and deploying are successfull (helloworld example on from beginners guide) but when I try to run the project nothing happens. I also tried to run the file directly from pi (from LXTerminal) but same result. No warnings, nothing. The program just starts and I can see from activity monitor that something happens for few seconds and then activity goes back to zero and nothing happens.
Then I have followed other guides with the same results. Now I'm in a stand that when I try to run this helloworld program from PC I'll get:

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Cant find EGLConfig, returning null config
Unable to find an X11 visual which matches EGL config 0
Could not initialize EGL
bash: line 1:  3112 Aborted                 DISPLAY=:0.0 /home/pi/helloworld/helloworld

Any ideas? Other project which I tried and again deployed says when running:

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Cant find EGLConfig, returning null config
Unable to find an X11 visual which matches EGL config 0

and after a while the program crashes if my mouse is in window:

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The X11 connection broke (error 2). Did the X11 server die?

Running the same code from Qt Creator I get:

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Cant find EGLConfig, returning null config
Unable to find an X11 visual which matches EGL config 0

I'm hopeless. I have been trying to get this to work for a month already. And tried at least 4 different guides with the same results. I hope somebody can help me.

Hilpara

[Hilpara]

I forgot to mention that, if I try to debug a code I will get immediately

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The inferior stopped because it received a signal from the Operating System.

Signal name : 
SIGSEGV
Signal meaning : 
Segmentation fault

Hilpara

[-rst-]

Is that Qt5? Is it even supposed to work under X? Maybe exit LXDE and try running from the 'real' commanline...

Are you familiar with this thread http://www.raspberrypi.org/phpBB3/viewt ... 66&t=15861

[Hilpara]

Yes Qt5. If I try to run it from commandline I will get: QXcbConnection: Could not connect to display.
Update:
Now I'm able to get those to run with -platform eglfs. But I still can't debug the code. Immediate segfault.

[Hilpara]

The debug problem is also now solved. I took a different debugger (from http://hertaville.com/2012/09/28/develo ... -compiler/ ). No more segfaults.

[zia_7575]

Hey,

I follow the following tutorial.
http://qt-project.org/wiki/RaspberryPi_Beginners_guide

when I try to set up qt version in qt creator. It says that "qt version is not installed properly. please sudo make install".
please can anyone help me on this,..

Regards,
Zia

[-rst-]

You should check if you have qmake in the correct path (/usr/local/qt5pi/bin/qmake) - i.e. did the base build succeed - or maybe the path is slightly different?

Or you could try the ready-made stuff from here http://twolife.be/raspbian/ (add those two lines to the apt conf and use 'apt-get install qt5'...)

[zia_7575]

Hey..

There is no error during compilation except few modules does not install like qtsensors, qt3d etc..

When I add path of qmake in qtversion. I get the error attached in pic..

and for ready-made stuff I added the two lines like this in apt.conf file..

Acquire::http::proxy "deb http://twolife.be/raspbian/ wheezy main";
Acquire::http::proxy "deb-src http://twolife.be/raspbian/ wheezy main";

and when i use sudo apt-get install qt5.. it gives error "E: Unable to locate package qt5"....

[jyavenard]

Have you found a solution to your problem?

Using the qt5 packages from http://twolife.be/raspbian/; I experience the same issue.

I tried to compile the Qt5 cube example, which too fail to run:
$ DISPLAY=:0.0 ./cube
Cant find EGLConfig, returning null config
Unable to find an X11 visual which matches EGL config 0
Could not initialize EGL
Aborted

any ideas?

[Bardo]

Hi!

I think i've found a solution: try to execute your application with the '-platform eglfs' option.

Seems like the xcb platform plugin (used by default) doesn't work fine on the Raspberry.

PD: I beg you pardon on my english; it's not my native language, and i'm still learning