[MacPorts] #69639: netcdf fails to build on Sonoma macOS 14.4.1

[MacPorts]

#69639: netcdf fails to build on Sonoma macOS 14.4.1
-------------------------+----------------------
  Reporter:  EJFielding  |      Owner:  tenomoto
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.9.1
Resolution:  fixed       |   Keywords:  sonoma
      Port:  netcdf      |
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Comment (by ryandesign):

 Replying to [comment:4 ryandesign]:
 > Replying to [comment:1 ryandesign]:
 > > So far Apple has not responded to my bug report.
 >
 > In case anyone at Apple is looking for it, it's FB13684598.

 Apple responded today that the problem should be fixed in Xcode CLT 16
 beta 3. I checked 16 beta, 16 beta 2, and 16 beta 3, and `m4` appears to
 be present again in all of them.

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Ticket URL: <https://trac.macports.org/ticket/69639#comment:8>
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