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This is the b2qt build for Raspbery Pi - How-to

Please be aware that this process can take very long time (days depending on your system..)

Make sure you have installed the management tool Repo by Google, if not, as super root and assuming you are in a Debian distribution or derivative of some sort:

apt install repo

Create a project directory (i.e mkdir My_Project) and cd into it, then:

repo init -u git://code.qt.io/yocto/boot2qt-manifest -m v6.2.3.xml

Sync the repositories:

repo sync

Then define what Raspberry Pi you have:

Board MACHINE value
Raspberry Pi raspberrypi
Raspberry Pi 2 raspberrypi2
Raspberry Pi 3 raspberrypi3
Raspberry Pi 4 raspberrypi4
Raspberry Pi 4 64-bit raspberrypi4-64
Raspberry Pi 0 raspberrypi0 
export MACHINE=raspberrypi_NUMBER && source ./setup-environment.sh

This will not just create a sub directory build-raspberrypi_NUMBER but also reallocate you inside it. All corresponding configuration files of the project bblayers.conf, local.conf and templateconf.cfg are in this directory.

Now you can build the full image by running the command:

bitbake b2qt-embedded-qt6-image

This process will take ages as it compiles all the source code... Once all has compilated and built we can flash the image into a SD card. You can use the Raspberry Imager or bmap-tools.

To use the Raspberry Imager, just download it sudo apt install rpi-imager and choose the Use Custom option and then inside Project_Name/build-raspberrypi_Number/tmp/deploy/raspberrypi_Number look for the corresponding wic.xz file that you can flash.

And to use bmap-tools, make sure it is installed

sudo apt-get install -y bmap-tools

And then

sudo bmaptool copy b2qt-embedded-qt6-image-raspberrypi_NUMBER.wic.bz2 --bmap b2qt-embedded-qt6-image-raspberrypi_NUMBER.wic.bmap /dev/sda
bmaptool: info: block map format version 2.0
bmaptool: info: 687923 blocks of size 4096 (2.6 GiB), mapped 374929 blocks (1.4 GiB or 54.5%)
bmaptool: info: copying image 'b2qt-embedded-qt6-image-raspberrypi_NUMBER.wic.bz2' to block device '/dev/sda' using bmap file 'b2qt-embedded-qt6-image-raspberrypi_NUMBER.wic.bmap'

Adding the kit in Qt Creator

bitbake meta-toolchain-b2qt-embedded-qt6-sdk

This process does take a while..

Building the cross-compile SDK

/opt/b2qt/3.3.4/configure-qtcreator.sh --config /opt/b2qt/3.3.4/environment-setup-cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi --qtcreator .../Qt/Tools/QtCreator/ --name qt6-pi3  # where your QtCreator is installed

So here --config: points to the file that the SDK installer tells you to source. --qtcreator: points to the folder where QtCreator is installed.. --name: the name of the new kit

After this process, a remote device needes to be added to the QtCreator, it should come up when opening the QtCreator under Tools/Options/Kit... Then you will have to create a new device (few tabs down from where the kits are).