[MacPorts] #60588: urbit: Undefined symbols _dprintf

[MacPorts]

#60588: urbit: Undefined symbols _dprintf
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  Reporter:  ryandesign  |      Owner:  l2dy
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.2
Resolution:              |   Keywords:
      Port:  urbit       |
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Comment (by ryandesign):

 Oh right! So I have seen that before.

 It sounds pretty simple. In #47301, aircrack-ng already contained
 compatibility code to use `fprintf` when `dprintf` was not available.

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Ticket URL: <https://trac.macports.org/ticket/60588#comment:3>
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