build-windows.txt

1) Download https://download.qt.io/archive/qt/5.12/5.12.12/single/qt-everywhere-src-5.12.12.zip
2) Extract to d:\qt\qt-everywhere-src-5.12.12
3) Create directory d:\qt\qt-install
4) Run from x64 (not x86!) command prompt for Visual Studio

..\qt-everywhere-src-5.12.12\configure -static -skip connectivity -skip sensors -skip datavis3d -skip serialbus -skip declarative -skip serialport -skip doc -skip speech -skip gamepad -skip svg -skip graphicaleffects -skip tools -skip imageformats -skip translations -skip location -skip virtualkeyboard -skip macextras -skip wayland -skip multimedia -skip webchannel -skip networkauth -skip webengine -skip websockets -skip 3d -skip purchasing -skip webview -skip activeqt -skip quickcontrols -skip winextras -skip androidextras -skip quickcontrols2 -skip x11extras -skip remoteobjects -skip xmlpatterns -skip canvas3d -skip script -skip charts -skip scxml -opensource -nomake tools -nomake tests -nomake examples -confirm-license -qt-libpng -no-harfbuzz -qt-pcre -qt-freetype -nomake tests -no-feature-testlib -no-feature-widgets -no-feature-xml -no-feature-sql -no-feature-network -no-feature-dbus -no-feature-linuxfb -no-feature-accessibility -no-feature-evdev -no-feature-vnc -no-feature-xlib -no-feature-xcb -no-feature-iconv -qt-zlib -no-feature-eglfs -no-feature-opengl -no-feature-icu -no-feature-glib --prefix=d:\qt\qt-install

nmake

nmake install