[MacPorts] #65905: pango @1.50.7: error: use of undeclared identifier 'FC_VARIABLE'

[MacPorts]

#65905: pango @1.50.7: error: use of undeclared identifier 'FC_VARIABLE'
---------------------------------+------------------------
  Reporter:  jamesstuartgunning  |      Owner:  ryandesign
      Type:  defect              |     Status:  assigned
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:  2.7.2
Resolution:                      |   Keywords:  bigsur
      Port:  pango               |
---------------------------------+------------------------

Comment (by ryandesign):

 After moving /opt/X11 aside, you would need to `sudo port clean pango` so
 that it reassesses the situation. Did you do that? If so, and it still
 fails, please attach the new main.log file.

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Ticket URL: <https://trac.macports.org/ticket/65905#comment:11>
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