[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@…):

 Looks like this upstream bug:
 https://bug.tasktools.org/browse/TW-1737?jql=text%20~%20%22shared_ptr%22

 This probably means task @2.5.0 requires libc++. See LibcxxOnOlderSystems
 for the available options.

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Ticket URL: <https://trac.macports.org/ticket/50312#comment:2>
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