[MacPorts] #59158: libtorrent-rasterbar @1.2.2 fails to build on mavericks

[MacPorts]

#59158: libtorrent-rasterbar @1.2.2 fails to build on mavericks
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  Reporter:  tehcog                |      Owner:  dbevans
      Type:  defect                |     Status:  assigned
  Priority:  Normal                |  Milestone:
 Component:  ports                 |    Version:  2.6.1
Resolution:                        |   Keywords:
      Port:  libtorrent-rasterbar  |
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Comment (by ryandesign):

 Trying to use it myself in another port, I'm realizing that apparently
 setting `compiler.*_standard` only helps you select a compatible compiler.
 It doesn't add the `-std` flag for you. You still have to do that
 separately.

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Ticket URL: <https://trac.macports.org/ticket/59158#comment:2>
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