[MacPorts] #67690: libgcc12 fails to compile with macOS Ventura 13.4

[MacPorts]

#67690: libgcc12 fails to compile with macOS Ventura 13.4
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 Reporter:  opendragon          |      Owner:  (none)
     Type:  defect              |     Status:  new
 Priority:  Normal              |  Milestone:
Component:  ports               |    Version:
 Keywords:  libgcc12 libiberty  |       Port:
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 Building gcc12 involves compiling libgcc12, which builds the deprecated
 library libiberty.
 This fails to compile due to "unknown type name 'PTR'".

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Ticket URL: <https://trac.macports.org/ticket/67690>
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