Cannot execute OSMScout2 due to unfound qml (Qt6) runtime dependency

[vmartinlac]

Hello,

I build libosmscout on Ubuntu 24.04 with Qt6.
When I try to execute OSScout2, I get:

Setting libosmscout logging to level: WARNING
Can't load translator for locale QLocale(French, Latin, France) / "fr_FR" ( "" )
Lookup databases
found db : /mnt/aeroloc_resources/openstreetmap/osmscout
QQmlApplicationEngine failed to load component
qrc:/qml/main.qml:5:1: module "QtQuick.Controls.Styles" is not installed

[Karry]

Hi, this import for Qt5 is available in the qml-module-qtquick-controls package. But when looking to the qml6-module-qtquick-controls package, there is nothing related to the "Styles". I am worry that OSMScout2 tool is not ported to the the Qt6 yet.

Answer from GPT:

QtQuick.Controls.Styles is Qt 5-only and was removed in Qt 6.
In Qt 6:
QtQuick.Controls.Styles 1.x does not exist.
Styling is done via:
Built-in style modules, e.g.
import QtQuick.Controls.Material
import QtQuick.Controls.Fusion
import QtQuick.Controls.Universal
Or by customizing Control's background, contentItem, etc. directly.
So for Qt 6, remove import QtQuick.Controls.Styles 1.1 and migrate any *Style { ... } usages to the new styling approach.

[Framstag]

@vmartinlac : Did the solution provided by @Karry help?

The StyleEditor handles this problem by using two different sets for *.qml files. We should do this for the OSMScout2 demo application, too.QtQuick.Controls.Styles also, that the StyleEditor does not have the import in the Qt5 variant anyway.

[vmartinlac]

Thanks for the reply. I will use the OpenGL renderer or the style editor instead of OSScout2 then.

[Karry]

QtQuick.Controls.Styles is not used in OSMScout2 demo at all. Fix for Qt6 was easy: #1687