[MacPorts] #54124: guile @2.2.2 won't build on PPC Leopard, Mac OS X 10.5.8, because is uses non-existing /lib/cpp as C preprocessor

[MacPorts]

#54124: guile @2.2.2 won't build on PPC Leopard, Mac OS X 10.5.8, because is uses
non-existing /lib/cpp as C preprocessor
------------------------+---------------------------------------
  Reporter:  ballapete  |      Owner:  kencu
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.4.1
Resolution:  fixed      |   Keywords:  tiger leopard snowleopard
      Port:  guile      |
------------------------+---------------------------------------

Comment (by ballapete):

 Replying to [comment:68 ballapete]:
 > Why are the pre-built GO files rebuilt?
 >
 > For me these 93 bootstrap GO file are built unconditionally. (I am going
 to check what is happening on x86_64 hardware.)

 On Catalina same behaviour. Luckily they don't make `guild` crash when
 building `guile-procedures.texi`! IMO these pre-built GO files are
 disturbing and filling up disks and internet…

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Ticket URL: <https://trac.macports.org/ticket/54124#comment:69>
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