[MacPorts] #61991: gcc10 @10.2.0 build failure

[MacPorts]

#61991: gcc10 @10.2.0 build failure
----------------------------+--------------------
  Reporter:  neuronphysics  |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  gcc10          |
----------------------------+--------------------

Comment (by ryandesign):

 Please attach the main.log file so that we can see what went wrong.

 Are you sure you need `g++`? Normally on macOS you would compile C++ code
 using `c++`, which is `clang++`, and if you got this far with MacPorts
 then you already have it installed.

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Ticket URL: <https://trac.macports.org/ticket/61991#comment:2>
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