I'm please to announce AdaStudio-2021 new release,
based on Qt-6.1.0-everywhere extended with modules : qtconnectivity qtgraphicaleffects qtlocation qtmultimedia qtsensors qtserialbus qtserialport qtwebchannel qtgamepad (qtscript and qtwebengine - work in progress )
Qt 6 is new long time project and I hope to solve this problems in next releases.
Qt6ada version 6.1.0 open source and qt6base.dll ,qt6ext.dll (win64),libqt6base.so,libqt6txt.so(x86-64) built with Microsoft Visual Studio 2019 x64bin Windows, gcc x86-64 in Linux.

Package tested with gnat gpl 2020 ada compiler in Windows 64bit , Linux x86-64 Debian 10.4
Qt-6.1.0 everywhere opensource prebuilt binaries for win64 and x86-64 are included into AdaStudio-2021

In new AdaStudio release was added new module qt6opencvada based on OpenCV 4.5.2 for camera capture,recording,transmite and receive.
qt6opencvada supports face detection and recognition. OpenCV-4.5.2 binaries prebuilt for win64 and x86-64 and included to AdaStudio

AdaStudio-2021 includes next modules : qt6ada,vtkada,qt6avada,qt6cvada and voice recognizer.

Qt6Ada is built under аGNU GPLv3аlicense https://www.gnu.org/licenses/lgpl-3.0.html.

Qt6Ada modules for Windows, Linux (Unix) is available from
Google drive https://drive.google.com/folderview?id=0B2QuZLoe-yiPbmNQRl83M1dTRVE&usp=sharing (It can be mounted as virtual drive with ExpandDrive (https://www.expandrive.com/download-expandrive/)), go to Adastudio directory and load index.html to browser.
Directory is
AdaStudio - root
qt6ada - qt6ada components
qt6.1win64.tar.bz2 - Qt-6.1.0 win64 prebuilt
qt6.1x86-64.tar.bz2 - Qt-6.1.0 x86-64 prebuilt
qt6adademos.tar.bz2 - qt6ada demos
qt6adasrc.tar.bz2 - qt6ada packages
qt6adawin64.tar.bz2 - qt6ada win64 binaries
qt6adax86-64.tar.bz2 - qt6ada x86-64 binaries

qtavada - qt6avada components
qt5avadasrc.tar.bz2 - qt6avada packages(qt5avada packages)
qt6avadademos.tar.bz2 - qt6avada demos
qt6avadawin64.tar.bz2 - qt6avada win64 binaries
qt6avadax86-64.tar.bz2 - qt6avada win64 binaries

qtopencvada - qt6opencvada componenets
opencv_4.5.2.win64.tar.bz2 - OpenCV 4.5.2 win64 prebuilt
opencv_4.5.2.x86-64.tar.bz2 - OpenCV 4.5.2 x86-64 prebuilt
qt6opencvadademos.tar.bz2 - qt6opencvada demos
qt6opencvadasrc.tar.bz2 - qt6opencvada packages
qt6opencvadawin64.tar.bz2 - qt6opencvada win64 binaries
qt6opencvadax86-64.tar.bz2 - qt6opencvada x86-64 binaries

voicerecognizer - qt6ada voicerecognizer components
qt6speech2textwin64.tar.bz2 - qt6voicerecognizerada win64 binries
qt6speech2textx86-64.tar.bz2 - qt6voicerecognizerada x86-64 binries
speech2textdemo.tar.bz2 - qt6voicerecognizerada demos
speech2textsrc.tar.bz2 - qt6voicerecognizerada packages

vtkada - vtk6ada componenets
vtk-9.0.0.win64.tar.bz2 - VTK 9.0 win64 prebuilt
vtk9.0.x86-64.tar.bz2 - VTK 9.0 x86-64 prebuilt
vtkada9qt6.tar.bz2 - VTK 9.0 Qt6 modules prebuilt
vtkadademo.tar.bz2 - vtkada demos
vtkadasrc.tar.bz2 - vtkada packages
vtkadawin64.tar.bz2 - vtkada win64 binaries
vtkadax86-64.tar.bz2 - vtkada x86-64 binaries

The full list of released classes is in "Qt6 classes to Qt6Ada packages relation table.docx"а

If you have any problems or questions, tell me know.

Leonid(leonid.dulman@gmail.com)