qt5-llvm-mingw-docker/qmake-static

#!/bin/bash

if [ "${QMAKE_FORCE_ALL_STATIC}" == "YES" ]; then
   qmake "$@" LIBS+=-static
else
   QMAKE_XSPEC=$(qmake -query QMAKE_XSPEC)
   if [ "${QMAKE_XSPEC}" == "win32-clang-g++" ]; then
      qmake "$@" LIBS+=-static
   elif [ "${QMAKE_XSPEC}" == "win32-g++" ]; then
      qmake "$@" LIBS+=-static-libgcc LIBS+=-static-libstdc++
   else
      qmake "$@" LIBS+=-static # Force all static because compiler unknown
   fi
fi