[MacPorts] #56706: doxygen @1.8.13 fails to build

[MacPorts]

#56706: doxygen @1.8.13 fails to build
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  Reporter:  ShadSterling  |      Owner:  cssdev
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.5.2
Resolution:                |   Keywords:
      Port:  doxygen       |
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Comment (by ryandesign):

 What port installed the file /opt/local/include/debug.h? (`port provides
 /opt/local/include/debug.h`)

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Ticket URL: <https://trac.macports.org/ticket/56706#comment:2>
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