Error trying to build qtwebglplugin in Qt-6.2.0

McTob

Dear all,
After >6month, I am retrying the qtwebgl plugin, now with QT 6.2.0 (there was no release of this plugin for QT6 before).
Unfortunately, it looks like I cannot build the plugin, I get the following error:

Project ERROR: Unknown module(s) in QT: eventdispatcher_support-private fontdatabase_support-private theme_support-private

Of course, I have a fresh Qt installation version 6.2.0 and I use qmake from there. Most likely I am missing some elements in my QT6 installation, but I have no idea which one ?

Right now, I installed the following:
qtbase
qtshadertools
qtdeclarative
qt3d
qtwebsockets

Thank you in advance for your help

McTob

@McTob said in Error trying to build qtwebglplugin in Qt-6.2.0:

theme_support-private

Ok after a lot on tinkering, I realized that it might have to do with a change of "structure" in where those features are integrated, from https://github.com/qt/qtwayland/commit/1f37019fd5156ed139108c83b34e12d34d140ac8

Remove FontDatabaseSupportPrivate/fontdatabase_support-private
in the libraries dependency. The libraries were removed in qtbase in
6be9830d865be32f224e15d13ddefd9c7e176553 and the functionality is now
in QtGui.

Remove PlatformCompositorSupport mentions, it was removed in qtbase
in 7172b5112e5dbf0cb63dec68d2f916a323748aa1, and functionality moved
to QtGui.

Indeed, If I check the qtwebplugin source code, I see includes such as
<QtFontDatabaseSupport/private/qgenericunixfontdatabase_p.h>

Although the said file is now in
Qt-6.2.0/include/QtGui/6.2.0/QtGui/private/qgenericunixfontdatabase_p.h

McTob

@McTob said in Error trying to build qtwebglplugin in Qt-6.2.0:

QtGui/private

Ok things are starting to make sense.

release 6.2.0 of qtwebgl plugin is supposed to be paired with Qt 5.15.1 as per https://github.com/qt/qtwebglplugin/tree/6.2.0/dist ?

This however doesn not make any sense. Why the hell would someone tag 6.2.0 on a qt plugin only compatible with 5.15.1... I don't get it, someone can help ?

McTob

Ok, eventually I found this: https://bugreports.qt.io/browse/QTBUG-72802?focusedCommentId=507973&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-507973

Which is heartbreaking....
WebGL plugin support has been dropped from QT6 onwards....