Qt5 SDK Core

https://www.google.com/search?q=qt5+sdk+windows&oq=Qt5+SDK&aqs=chrome.3.69i57j0l5.3720j0j7&sourceid=chrome&ie=UTF-8
https://www.qt.io/download
https://ru.wikihow.com/%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%82%D1%8C-Qt-SDK-%D0%B2-Microsoft-Windows

http://qtlinux.narod.ru/install_qt.htm