[MacPorts] #58819: bison @3.4.1 build failure on 10.4: flex: unknown flag '-'

[MacPorts]

#58819: bison @3.4.1 build failure on 10.4: flex: unknown flag '-'
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  Reporter:  mrkapqa  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.5.4
Resolution:           |   Keywords:  tiger
      Port:  bison    |
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Comment (by mrkapqa):

 Thanks, this solved it.

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Ticket URL: <https://trac.macports.org/ticket/58819#comment:2>
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