cross compiled qt for BBB

Asha

@jsulm

I copied my cross compiled qt in my board via

scp Qt5 debian@192.168.7.2:Qt5

means directly in my device only,not in any directory(where i need to copy that one)..

SGaist

So you did not copy the libraries at the exact same place on your device ?

Your system installed Qt is picked before the one you copied.

So one solution is to call: LD_LIBRARY_PATH=/path/to/your/cross-compiled_qt/lib ./YOUR_EXECUTABLE_NAME.

jsulm

@Asha said in cross compiled qt for BBB:

means directly in my device only

Your app definitely uses wrong Qt libs.
You have to copy the Qt libs into same directory you specified in -prefix. In your case /home/debian/Qt5.
If this is the case then try following to start your app on device:

cd DIR_WHERE_YOUR_APP_IS
export LD_LIBRARY_PATH=/home/debian/Qt5
./YOUR_APP

Asha

@jsulm

now at present I don't have my display,

but while giving this

@jsulm said in cross compiled qt for BBB:

cd DIR_WHERE_YOUR_APP_IS
export LD_LIBRARY_PATH=/home/debian/Qt5
./YOUR_APP

I am getting the output in my laptop,it just blinking for a second..

If I connect my display, and then I execute as you told,then can I get the result in my display?

jsulm

@Asha said in cross compiled qt for BBB:

If I connect my display, and then I execute as you told,then can I get the result in my display?

If nothing else is wrong then yes

Asha

@jsulm

Hi,

now i connected my device to the display ,and i followed as you said..
but i am not getting the output in display screen,getting output in my laptop...

jsulm

@Asha said in cross compiled qt for BBB:

getting output in my laptop

Did you redirect the output as @Pablo-J-Rogina suggested before?
If so then do not redirect, just make sure you see graphical desktop on the display.

Asha

@jsulm said in cross compiled qt for BBB:

Did you redirect the output as @Pablo-J-Rogina suggested before?

i am not understand this one,what your trying to ask?

i burned new image in my sdcard,and i put that sdcard into the BBB after that trying to execute this qt applications,

while trying with

ssh debian@192.168.7.2
getting Qxcb error

And trying with

ssh -X debian@192.168.7.2

getting this with displaying the output in laptop

libEGL warning: DRI3: failed to query the version
libEGL warning: DRI2: failed to authenticate
QXcbConnection: XCB error: 1 (BadRequest), sequence: 405, resource id: 220, major code: 154 (Unknown), minor code: 1

jsulm

@Asha Can you connect a keyboard to your device and start your app directly on the device without SSH?

Asha

@jsulm through keyboard I am able to display the output on my display screen...

but why not getting by the laptop(via ssh)?

how do I execute it by laptop?

Asha

@jsulm Thankyou so much Sir,for the help..
Thanks to everyone how guided me..

Pablo J. Rogina

@Asha said in cross compiled qt for BBB:

but why not getting by the laptop(via ssh)?

Because you seem not to forward the X display through the SSH connection.

how do I execute it by laptop?

I've already told you, see one of my previous posts.
In addition, you may want to read more about X forwarding, there's plenty of articles, for instance here. I won't post anymore about this issue remote display.