Configuring: Qt 6.2 " Unknown command line option '-webengine-proprietary-codecs'."

[FrogCastOrg]

Just a bit confused as what is going on here. It shows it as available but pumps out this:

exec /home/anon/Library/qt6.2/qtbase/configure -top-level -webengine-proprietary-codecs -webp -tiff -jasper -mng -libproxy -sctp -journald -syslog -eventfd -inotify -developer-build -debug
CMake Error at qtbase/cmake/QtProcessConfigureArgs.cmake:249 (message):
  Unknown command line option '-webengine-proprietary-codecs'.
Call Stack (most recent call first):
  qtbase/cmake/QtProcessConfigureArgs.cmake:623 (qtConfAddError)