How to cross-compile QT App on RPi3

dziko147

Hello
I am new in QT development. So i would like to deploy my Qt App on RPi3 using buildroot toolchain. I installed the linux Kernel under my Rpi and now i would like to deploy my App .
Any help please ! Thanks <3

jsulm

@dziko147 Please start here https://wiki.qt.io/Raspberry_Pi_Beginners_Guide

KroMignon

@dziko147 I do not really understand what you want to do.

Do you want to create a buildroot image containing your application or do you want to be able to build Qt app for your RPi?

dziko147

Thank you for your answers
I am sorry my post wasn't clear .
So , I create a kernel image using buildroot . Now i would like to cross compile my Qt App to Rpi . If it's possible using the buildroot toolchain . Really i haven't no idea how to do this .

jsulm

@dziko147
If you want to cross compile then please follow the link I provided.
As alternative you can also build on RPi, which is of course slower.

dziko147

@jsulm thank you but I would like to use the kernel image generated by buildroot not Raspbian distribution

jsulm

@dziko147 Should work similar: you need a sysroot and you need to cross compile Qt using this sysroot.

KroMignon

@dziko147 said in How to cross-compile QT App on RPi3:

I would like to use the kernel image generated by buildroot not Raspbian distribution

What did you add to your custom buildroot image?
You must, at least, have add QT5 support.