The easiest way to do this is to use the official Raspberry Pi Imager. Let's now download and install/flash an image of Raspberry Pi OS to a microSD card. The second line will create the sysroot directory with its necessary subfolder, while the third line will create the directory for the rest of locations defined previously. $ mkdir qt-host qt-raspi qthost-build qtpi-build $ mkdir rpi-sysroot rpi-sysroot/usr rpi-sysroot/opt Sysroot, which basically is the scaled down version of our target's filesystem inside our host machine.This way, we can easily track the location of these important components when we are typing commands in the terminal.Īt its most basic setup, we need at least the following components in a host machine to cross-compile Qt: The steps on this guide was tested on Ubuntu 20.04 targeting Raspberry Pi 4 Model B 2GB (64-bit) running Raspberry Pi OS, but it should work with any Debian-based OS.įor an older guide, check this Qt Wiki guide or this one.īefore we get our hands dirty and mess around with the configurations, let's familiarise ourselves with essential components needed to cross-compile Qt and decide which directory names we want to use to store these components. The instructions in this guide are targeted for beginners, but it should be easy to follow for everyone. The end result of this guide allows you to compile Qt 6 applications on a host machine and deploy it on the Raspberry Pi running a Raspberry Pi OS image. This is a step-by-step guide to cross-compile Qt 6 for Raspberry Pi OS. 10.6 Various libraries not found when launching app on Raspberry Pi:.10.5 Compiling app in QtCreator for device linux-rasp-pi3-g++ throws various errors:.10.4 Environment variables are not permanent:.10.3 Issue with QtWayland not compiling:.8.3 Final Configuration on Raspberry Pi.
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