Qt6

Compatibility between Yocto and Qt 6 Versions

by Burkhard Stubert
2023/02/042023/02/04
3 Comments

We can build the Qt versions from 6.2 to 6.5 with the meta-qt6 layer for the Yocto versions 3.1 to 4.1. This is a big time saver.

Using Qt 6 under LGPLv3

by Burkhard Stubert
2023/01/062024/10/07
20 Comments

The Qt Company changed Qt licensing in February 2022. All the separate commercial packages – including Qt for MCU, Qt Safe Renderer, Qt Automotive Suite and Qt Automation – were folded into two Qt for Device Creation licenses: Professional and Enterprise. The Qt Marketplace license for modules like CoAP, MQTT, Charts and for the design tool bridges was discontinued. My post helps you answer the crucial question: Shall you use Qt Commercial or Qt LGPL-3.0?

The HMI of the ROPA sugar-beet harvesters runs on a Topcon Opus A8 terminal.

Building Qt 6.2 For Old Yocto Versions

by Burkhard Stubert
2022/04/112022/11/23
5 Comments

The Qt version of an embedded Linux system is tied to the Yocto version. Yocto 2.7 (Warrior) comes with Qt 5.12, Yocto 3.1 (Dunfell) with Qt 5.14, Yocto 3.2, 3.3 and 3.4 with Qt 5.15 . There is no Yocto version with Qt 6 yet. How can we build Qt 6.2 against the SDK of old Yocto versions?

Migrating the driver terminal of a sugar beet harvester from Qt 5 to Qt 6

Migrating a Harvester HMI from Qt 5.12 to Qt 6.2

by Burkhard Stubert
2021/01/172021/12/29

September 2021 saw the launch of Qt 6.2 – the first Qt 6 version with feature parity to Qt 5.15. I wanted to find out whether Qt 6.2 is fit for products. So, I migrated the HMI application of the ROPA sugar beet harvesters from Qt 5.12 over Qt 5.15 to Qt 6.2. The migration went very smooth and quick. And yes, Qt 6.2 is fit for products!