[MacPorts] #53818: fox: version upgrade breaks sumo

[MacPorts]

#53818: fox: version upgrade breaks sumo
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  Reporter:  lockhart  |      Owner:
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  fox       |
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Comment (by lockhart):

 I've tried testing with 1.6.52 (fails to build with an undefined variable)
 and 1.6.50 (builds and does not exhibit the crashing problem found in
 1.6.53).
 SUMO developers report success with 1.6.50 on Linux and 1.6.52 on Windows
 and no experience with 1.6.53.
 If we want to upgrade Fox I would recommend moving to 1.6.50 from 1.6.46.

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Ticket URL: <https://trac.macports.org/ticket/53818#comment:4>
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