[MacPorts] #63714: python39 @3.9.7: build failure on Monterey/M1

[MacPorts]

#63714: python39 @3.9.7: build failure on Monterey/M1
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  Reporter:  tglsfdc   |      Owner:  jmroot
      Type:  defect    |     Status:  accepted
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  monterey
      Port:  python39  |
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Comment (by tglsfdc):

 Replying to [comment:3 FaradayLight]:
 > Are you using a beta version of the SDK?

 Not I --- it's what came with Xcode 13.1.

 Also, just to eliminate some possibilities, I copied all of the
 /Library/Developer/CommandLineTools/SDKs/MacOSX12.0.sdk/
 tree from the Mac where the build works to the one where it doesn't.
 Didn't help.

 I should also note that I've since seen what looks like the identical
 issue
 with python38 and glib2.  So my best theory at the moment is that there's
 something fundamentally wrong with that MacPorts installation.  But I
 don't
 know what, nor why removing and reinstalling MacPorts didn't fix it.

-- 
Ticket URL: <https://trac.macports.org/ticket/63714#comment:4>
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