What about make Qt 6 the default in CMakelists.txt? about libosmscout

[vyskocil]

Due to license changes, it seems there is no "free" license for Qt 6 vs Qt 5, then I think it's not a good idea to make it the default

[playgithub]

https://doc.qt.io/qt-6/licensing.html
https://doc.qt.io/qt-5/licensing.html

Almost same, right?

[vyskocil]

The last version I installed was Qt 5.9.1 and still use it only for testing. Now I couldn't find were to download current binary version, there are warning pages about the license and then I could only find source release...

[playgithub]

Following are the add-ons available under Commercial Licenses, or GNU General Public License v3, others are under LPGL3.

Qt5

From https://doc.qt.io/qt-5/qtmodules.html

• Qt Charts
• Qt Data Visualization
• Qt Lottie Animation
• Qt Network Authorization
• Qt Virtual Keyboard
• Qt Wayland Compositor
• Qt for WebAssembly
• Qt Quick 3D
• Qt Quick WebGL

Qt6

From https://doc.qt.io/qt-6/qtmodules.html

• Qt Charts
• Qt CoAP
• Qt Data Visualization
• Qt Lottie Animation
• Qt MQTT
• Qt Network Authorization
• Qt Quick 3D
• Qt Quick 3D Physics
• Qt Quick Timeline
• Qt Wayland Compositor

[Framstag]

My two cents ;-)

• I'm interested in supporting Qt6 (just as I'm interested in support for C++20 and other things).
• The current support for Qt6 is not complete. The Qt6 build does only compile because @Karry and me commented out cod ein our library to get things at least to work. There should be some "#if Qt5 #else..." in the code. I will not make Qt6 default, until this is fixed.
• Currently only the meson build does support Qt6. We should fix the cmake build for this, to make Qt 6 default
• I have no problem with Qt6 making default after this. But currently @Karry is our main user of Qt5, so this will not change much. Qt5 will not diapear and @Karry like will only work on Qt5 code. He likely will not have a problem with pass an additional Qt5 option to his builds. ´
• We need a "sponsor" for Qt6.
• We are currently not discussing the most import part of the Qt6 support. First things first :-) Make the code work.

[Karry]

It would be great to support both major versions in CMake. I don't care what is the default, if both versions will be supported. As I'm developing application for Sailfish OS, I need to support even old Qt 5.6 in library. With Qt6, the last thing that is not supported is navigation voice instructions, if I remember it correctly. But I don't test Qt6 build yet, just compile it in docker container. So, more things may be broken...