[MacPorts] #49631: build error: 'tr1/functional' file not found

[MacPorts]

#49631: build error: 'tr1/functional' file not found
------------------------+--------------------------------
 Reporter:  macports@…  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  rtorrent
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 A couple of header files try to #include <tr1/functional>, which is not
 found. Configure checks beforehand "for TR1 support… no" but continues
 anyway.

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Ticket URL: <https://trac.macports.org/ticket/49631>
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