# Configure the Qt6 support first:
mkdir cmake-build-qt6
cd cmake-build-qt6
  cmake \
    "${KDE_BUILD_ARGS[@]}" \
    "${KDE_QT6_ARGS[@]}" \
    $KDE_OPT_ARGS \
    ..

cd -

# Configure the Qt5 support next:
mkdir cmake-build-qt5
cd cmake-build-qt5
  cmake \
    "${KDE_BUILD_ARGS[@]}" \
    "${KDE_QT5_ARGS[@]}" \
    $KDE_OPT_ARGS \
    ..

# make can pick up from here, and first build the Qt5, then Qt6 stuff.