[MacPorts] #61494: gcc9 @9.3.0 "Failed to build libgcc9: command execution failed" in macOS 11.0 Big Sur

[MacPorts]

#61494: gcc9 @9.3.0 "Failed to build libgcc9: command execution failed" in macOS
11.0 Big Sur
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  Reporter:  kgerheiser  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.4
Resolution:              |   Keywords:  bigsur
      Port:  libgcc9     |
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Comment (by michaelld):

 Wow yeah it is a miracle that GCC builds at all on Darwin 20 ... I can't
 think of a good reason to fix these except for completion.

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Ticket URL: <https://trac.macports.org/ticket/61494#comment:12>
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