Qt 6.11 is out! See what's new in the release
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Building Qt 5.8 source code for visual studio 2015 on windows
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http://doc.qt.io/qt-5/qtquick-porting-qt5.html
"QtDeclarative module has been deprecated in favor of two new modules: Qt QML, which implements the QML engine and language infrastructure, and Qt Quick, which implements the visual canvas and scenegraph backend." -