[MacPorts] #65555: py39-matplotlib is using libstdc++ (this installation is configured to use libc++)

[MacPorts]

#65555: py39-matplotlib is using libstdc++ (this installation is configured to use
libc++)
----------------------------+------------------------
  Reporter:  RobK88         |      Owner:  reneeotten
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.7.2
Resolution:                 |   Keywords:  lion
      Port:  py-matplotlib  |
----------------------------+------------------------

Comment (by RobK88):

 I understand Renee. It is hard to debug when you do not have access to an
 old Mac. When I get a chance, I will take a look at the source and see if
 I can fix all the CXXFLAGS present in the source. If I am successful, I
 will submit a patch.

 In the meantime, at least there is a workaround that works. One just needs
 to manually specify the clang-9.0 compiler when installing or upgrading
 this port.

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Ticket URL: <https://trac.macports.org/ticket/65555#comment:6>
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