[MacPorts] #62158: py-protobuf3: install failures for macOS 10.8 through 10.11: compilation error related to PROTOBUF_MAYBE_CONSTEXPR MapFieldBase(ConstantInitialized)

[MacPorts]

#62158: py-protobuf3: install failures for macOS 10.8 through 10.11: compilation
error related to PROTOBUF_MAYBE_CONSTEXPR MapFieldBase(ConstantInitialized)
---------------------------+-------------------------
  Reporter:  mascguy       |      Owner:  Schamschula
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  py-protobuf3  |
---------------------------+-------------------------

Comment (by Schamschula):

 I'm aware of being able to run VMs (and have installers all the way back
 to Snow Leopard Server). I have done so in the past. I don't have time and
 energy to do so.

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Ticket URL: <https://trac.macports.org/ticket/62158#comment:10>
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