[MacPorts] #65853: qt5-qtbase fails to configure

[MacPorts]

#65853: qt5-qtbase fails to configure
--------------------------+--------------------
  Reporter:  AgilentGCMS  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.2
Resolution:               |   Keywords:
      Port:  qt5-qtbase   |
--------------------------+--------------------

Comment (by kencu):

 I think this PR is needed to fix this:

 https://github.com/macports/macports-ports/pull/15136

 Mark took code that was working in the qmake5 PG and added it to the
 qt5-qtbase ports.

 That's probably what we need to test next here.

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Ticket URL: <https://trac.macports.org/ticket/65853#comment:18>
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