[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
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  Reporter:  ballapete  |      Owner:  kencu
      Type:  defect     |     Status:  reopened
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.4.1
Resolution:             |   Keywords:  tiger leopard snowleopard
      Port:  guile      |
------------------------+---------------------------------------

Comment (by ballapete):

 Replying to [comment:30 kencu]:
 Yes, that's the better choice. The first build with renamed
 `${worksrcpath}/prebuilt/32-bit-big-endian` directory has started. With
 `GCC7`.

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Ticket URL: <https://trac.macports.org/ticket/54124#comment:31>
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