[MacPorts] #61167: Cmake fails to build on Big Sur

[MacPorts]

#61167: Cmake fails to build on Big Sur
----------------------+--------------------
 Reporter:  TruePath  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.99
 Keywords:  bigsur    |       Port:  cmake
----------------------+--------------------
 Cmake fails to build after upgrade to big sur using the xcode 12 beta (I'm
 using the version of port built from the github repo ...last commit on Sep
 1st and the ).  The error seems to either be

 :info:configure CMake Error at
 /opt/local/libexec/qt5/lib/cmake/Qt5Gui/Qt5Gui_QICNSPlugin.cmake:4
 (_populate_Gui_plugin_
 properties):
 :info:configure   _populate_Gui_plugin_properties Macro invoked with
 incorrect arguments for
 :info:configure   macro named: _populate_Gui_plugin_properties

 Or

 :info:configure sh: /bin/ps: Operation not permitted

 I'll attach complete logs.

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Ticket URL: <https://trac.macports.org/ticket/61167>
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