[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:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.4.1
Resolution:             |   Keywords:  tiger leopard snowleopard
      Port:  guile      |
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Comment (by kencu):

 I wonder if the `bash` on 10.4 and 10.5 is just too old for this script?
 Why is it happening only there?

 Also <https://superuser.com/questions/554855/how-can-i-fix-a-broken-pipe-
 error> looks like a clue.

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Ticket URL: <https://trac.macports.org/ticket/54124#comment:12>
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