[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):

 This is **very** unusual: The build on Tiger with working pre-built GO
 files took only one fifth the time as with the renamed 32-bit-big-endian
 directory and as on Leopard with a similarly prepared 32-bit-big-endian
 directory with my own GO files. So the pre-built GO files do work here!
 These files have on Tiger and Leopard at least the same size and they also
 are the same file type.

 I'll retry to build on Leopard, after upgrading all outdated ports.

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Ticket URL: <https://trac.macports.org/ticket/54124#comment:72>
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