[MacPorts] #64694: gcc/libgcc: update older systems prior to 10.6 to a newer gcc version?

[MacPorts]

#64694: gcc/libgcc: update older systems prior to 10.6 to a newer gcc version?
----------------------------+---------------------------
  Reporter:  barracuda156   |      Owner:  (none)
      Type:  request        |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.7.1
Resolution:                 |   Keywords:  leopard tiger
      Port:  libgcc, gcc10  |
----------------------------+---------------------------

Comment (by kencu):

 BTW -- gcc10 and gcc10-bootstrap on 10.6 PPC will build but be broken just
 like all the gcc versions unless you went through that special patchset I
 came up with for gcc7 and tweak it up for gcc10.

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Ticket URL: <https://trac.macports.org/ticket/64694#comment:4>
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