[MacPorts] #59037: doxygen @1.8.15 fails to build when libmd is installed

[MacPorts]

#59037: doxygen @1.8.15 fails to build when libmd is installed
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  Reporter:  TheLastLovemark  |      Owner:  kencu
      Type:  defect           |     Status:  closed
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.5.4
Resolution:  fixed            |   Keywords:
      Port:  doxygen          |
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Comment (by jmroot):

 Using conflicts_build is not a fix, it's only documentation of the need
 for a manual workaround.

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Ticket URL: <https://trac.macports.org/ticket/59037#comment:6>
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