[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 ballapete):

 Replying to [comment:7 kencu]:
 >
 > My first thought when I see weird errors like this in ports that are
 known to work on other systems is to think of issues with parallel
 building. So I usually try disabling that. We have had issues with exactly
 that on gcc* in the past.

 My PowerBook G4 has one PowerPC 7447A processor with exactly one core.
 There isn't even an artificially parallel build with some `-j` option
 going on.

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Ticket URL: <https://trac.macports.org/ticket/56922#comment:9>
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