[MacPorts] #61236: OpenBLAS 0.3.10_1 +native Build Fails on MacOS 10.15.6 and Xcode 12.0

[MacPorts]

#61236: OpenBLAS 0.3.10_1 +native Build Fails on MacOS 10.15.6 and Xcode 12.0
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  Reporter:  mascguy   |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.3
Resolution:            |   Keywords:
      Port:  OpenBLAS  |
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Comment (by mf2k):

 In the future, please use WikiFormatting and add the port maintainer(s) to
 Cc ({{{port info --maintainers OpenBLAS}}}), if any.

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Ticket URL: <https://trac.macports.org/ticket/61236#comment:4>
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