[MacPorts] #60436: avahi fails to build on High Sierra

[MacPorts]

#60436: avahi fails to build on High Sierra
---------------------+------------------------
  Reporter:  furioe  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.2
Resolution:          |   Keywords:  highsierra
      Port:  avahi   |
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Comment (by furioe):

 Oh. The error went away after cleaning up the build directory with `rm -rf
 /opt/local/var/macports/build/*` and retrying. Sorry about that. Perhaps
 the ticket is still useful to make the build more robust. Anyway, my
 problem is now solved.

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Ticket URL: <https://trac.macports.org/ticket/60436#comment:2>
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