[MacPorts] #60918: cppzmq @4.6.0_0: Error: Failed to configure cppzmq

[MacPorts]

#60918: cppzmq @4.6.0_0: Error: Failed to configure cppzmq
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  Reporter:  brislawn  |      Owner:  michaelld
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.3
Resolution:            |   Keywords:
      Port:  cppzmq    |
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Comment (by michaelld):

 Please do a "sync" or "selfupdate" and then "clean cppzmq" and then try
 again. Hopefully this time it will work.

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Ticket URL: <https://trac.macports.org/ticket/60918#comment:8>
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