[MacPorts] #71549: qt6-qtmultimedia @6.8.1_0 fails to build on macOS 13 and older

[MacPorts]

#71549: qt6-qtmultimedia @6.8.1_0 fails to build on macOS 13 and older
-------------------------------+---------------------------------
  Reporter:  mopihopi          |      Owner:  MarcusCalhoun-Lopez
      Type:  defect            |     Status:  reopened
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:
Resolution:                    |   Keywords:
      Port:  qt6-qtmultimedia  |
-------------------------------+---------------------------------

Comment (by mopihopi):

 This should deactivate any Qt 6.8 ports that are currently active on your
 system:
 {{{
 sudo port deactivate 'qt6-*' and active
 }}}
 Answer y if asked to confirm that it will break existing ports that depend
 on Qt:
 {{{
 Note: It is not recommended to uninstall/deactivate a port that has
 dependents as it breaks the dependents.
 The following ports will break: mkvtoolnix @88.0_0
 Continue? [y/N]: y
 }}}
 Then you can upgrade your ports as usual and it should automatically
 rebuild any broken ports, using Qt 6.7 on macOS 12/13 or Qt 6.4 on macOS
 10.15/11:
 {{{
 sudo port selfupdate
 sudo port upgrade outdated
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/71549#comment:7>
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