[MacPorts] #50312: task @2.5.0_0: error: no type named 'shared_ptr' in namespace 'std'

[MacPorts]

#50312: task @2.5.0_0: error: no type named 'shared_ptr' in namespace 'std'
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  Reporter:  starkhalo@…  |      Owner:  macports-tickets@…
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.4
Resolution:               |   Keywords:
      Port:  task         |
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Comment (by ryandesign@…):

 No; see https://build.macports.org/builders/ports-10.8_x86_64_legacy-
 builder/builds/1549

 If this requires C++11, 10.8 and earlier shouldn't be blacklisted; rather,
 the cxx11 1.0 portgroup should be used, which will explain the situation
 to the user.

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Ticket URL: <https://trac.macports.org/ticket/50312#comment:5>
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