[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:58 kencu]:
 > Everything finished building. `gcc6`, `libgcc6`, `gcc7`, `libgcc7`, and
 `libgcc` all built through to completion on my system without any
 modifications to any Portfiles.
 >
 > Figuring out exactly what is impairing your system from building them
 can be a challenge.
 >
 > I can make the binaries available if you like.

 I have now installed:

 {{{
   apple-gcc42 @5666.3_15+gpl3 platform='darwin 8' archs='ppc'
 date='2015-07-10T13:06:16+0200'
   apple-gcc42 @5666.3_15 platform='darwin 8' archs='ppc'
 date='2018-08-20T17:19:16+0200'
   apple-gcc42 @5666.3_15+bootstrap+gpl3 (active) platform='darwin 8'
 archs='ppc' date='2018-08-21T01:36:13+0200'
 }}}

 Obviously a usable compiler is `active`. A new build has started, and it
 installed the two  previously `deactivate`d packages:

 {{{
 DEBUG: Found Dependency: receipt exists for ld64-97
 The following dependencies will be installed:
  cctools
  ld64
 Continue? [Y/n]: DEBUG: Starting logging for cctools
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/56922#comment:59>
MacPorts <https://www.macports.org/>
Ports system for macOS