[MacPorts] #65573: libgcc12: build fails for macOS 12.6 and 13 Beta

[MacPorts]

#65573: libgcc12: build fails for macOS 12.6 and 13 Beta
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  Reporter:  adamgao1996  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.2
Resolution:               |   Keywords:  monterey
      Port:  libgcc12     |
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Comment (by michaelld):

 I've seen this and #65850 for a while ... I did a little code poking ...
 my best guess is that GCC's build system needs to be tweaked for Darwin 22
 ... just a guess. I have not yet contacted Iain yet ... maybe @kencu can
 do that? Lack of GCC is holding back critical ports when using Xcode 14 or
 (so I understand) macOS 13-beta + Xcode 14-beta ... like OpenBLAS, NumPy,
 SciPy, etc. ...

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Ticket URL: <https://trac.macports.org/ticket/65573#comment:14>
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