A typical embedded Linux system comprises 250+ software components under 75+ different licenses like BSD, Apache, LGPL, EPL and GPL. You must satisfy the license obligations for all components and ensure that license combinations are legal and desirable. A special focus is on using Qt under LGPL and on avoiding the hefty fees for commercial Qt licenses on embedded systems.
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
From Qt 5.15, The Qt Company make their offering a bit more inconvenient for FOSS users. They announced three changes: * A Qt account is mandatory to download binary Qt packages. The offline installer is not available to FOSS users
The little known KDE Free Qt Foundation makes sure that Qt stays free and open-source. It guarantees that all Qt modules currently licensed under LGPLv3 must continue to be available under LGPLv3 in the future. This covers all modules from
At Qt Day 2019 in Florence, Italy, I gave a talk Using Qt under LGPLv3. In the first part The obligations of Qt LGPLv3: made understandable, I explain in detail, how you must provide the source code, the license texts,