http://download.qt.io/archive/qt/
http://download.qt.io/archive/qt/5.12/5.12.2/single/qt-everywhere-src-5.12.2.tar.xz
qt-vsaddin-msvc:
http://download.qt.io/archive/vsaddin/
cmake:
https://cmake.org/download/
emscripten
https://emscripten.org/docs/getting_started/downloads.html
https://github.com/emscripten-core/emscripten/releases