cross compiled qt for BBB

Asha

my configure command is exactly as shown in below ,please go through this

./configure -platform linux-g++ release -device linux-beagleboard-g++ -sysroot /home/beagle/BBB/sysroot -prefix /home/debian/Qt5 -hostprefix ~/Qt5 -device option
CROSS_COMPILE = /home/beagle/BBB/gcc-linaro......gnuabihf- -nomake tests -nomake examples -no-opengl -opensource -confirm-license -reduce-exports -make libs -no-egl -no-eglfs -qt-zlib -qt-libpng -no-use-gold-linker-linuxfb -qt-libjpeg -no-opengl -no-cups -no-glib -no-iconv -nomake examples -nomake tools -nomake tests -no-pkg-config -skip qtdeclarative -skip qtlocation -skip qtpurchasing -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip qtwebglplugin -skip qtandroisextras -skip qtgamepad -skip qtmacextras -skip qtwinextras -skip qtsensors -skip qtconnectivity -recheck-all -v

any mistakes in this configuration then please let me know..(if any mistakes then what configuration I need to give ,for my X server, beagleboneboard,just i want to run a simple qt application in my board and display the output in my display screen)...

jsulm

@Asha You did not answer my question.
Where did you put your cross compiled Qt on the device?

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.