[MacPorts] #56418: pdf2djvu @0.9.9: error: no type named 'unique_ptr' in namespace 'std'

[MacPorts]

#56418: pdf2djvu @0.9.9: error: no type named 'unique_ptr' in namespace 'std'
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 Reporter:  ryandesign  |      Owner:  NicosPavlov
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  pdf2djvu
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 Build fails on older systems using libstdc++:

 https://build.macports.org/builders/ports-10.8_x86_64_legacy-
 builder/builds/59630/steps/install-port/logs/stdio

 Include the cxx11 1.1 portgroup?

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Ticket URL: <https://trac.macports.org/ticket/56418>
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