[MacPorts] #56922: Libgcc7 @7.3.0_1 fails to build on PPC Tiger, Mac OS X 10.4.11, because comparison of stages 2 and 3 fails

[MacPorts]

#56922: Libgcc7 @7.3.0_1 fails to build on PPC Tiger, Mac OS X 10.4.11, because
comparison of stages 2 and 3 fails
------------------------+--------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.3
Resolution:             |   Keywords:  tiger
      Port:  libgcc7    |
------------------------+--------------------

Comment (by cjones051073):

 How would this then explain

  - The port builds just fine as is on all other platforms.
  - The port, in its old version as `libgcc` (but as far as the gcc build
 configuration identical) also built just fine for your on Darwin 8.

 Whatever the issue is, you need to be able to explain the above really to
 really understand what is going on here.

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Ticket URL: <https://trac.macports.org/ticket/56922#comment:25>
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