Configuring examples failed in 'dev'

-- Configuring examples.
CMake Error at qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:588 (add_executable):
  add_executable cannot create target "calculator" because another target
  with the same name already exists.  The existing target is an executable
  created in source directory
  "/home/qt/work/qt/qt5/qtbase/examples/widgets/widgets/calculator".  See
  documentation for policy CMP0002 for more details.
Call Stack (most recent call first):
  qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:549 (_qt_internal_create_executable)
  qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:762 (qt6_add_executable)
  qtscxml/examples/scxml/calculator/CMakeLists.txt:17 (qt_add_executable)
CMake Warning (dev) at qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:718 (message):
  Tried to call qt6_finalize_target twice on target 'calculator'.  Did you
  forget to specify MANUAL_FINALIZATION to qt6_add_executable,
  qt6_add_library or qt6_add_plugin?
Call Stack (most recent call first):
  qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:564:EVAL:1 (qt6_finalize_target)
  qtscxml/examples/scxml/calculator/CMakeLists.txt:DEFERRED
This warning is for project developers.  Use -Wno-dev to suppress it.
CMake Error at qtbase/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:588 (add_executable):
  add_executable cannot create target "mediaplayer" because another target
  with the same name already exists.  The existing target is an executable
  created in source directory
  "/home/qt/work/qt/qt5/qtmultimedia/examples/multimedia/video/mediaplayer".
  See documentation for policy CMP0002 for more details.