[MacPorts] #47987: djview @4.10 fails to build on PPC 10.5

[MacPorts]

#47987: djview @4.10 fails to build on PPC 10.5
------------------------------+---------------------
  Reporter:  reeskm@…         |      Owner:  nicos@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.3.4
Resolution:                   |   Keywords:
      Port:  djview, qt4-mac  |
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Comment (by michaelld@…):

 Looks like the configure script fails to properly not build those plugins.
 Ditto for my current 10.11 box. Probably can work around that.

 The issue is that the macros ```__powerpc__``` and ```__powerpc64__``` are
 not being defined by the compiler. I would guess that they are instead
 ```__ppc__``` and ```__ppc64__```. Can you issue the following & report
 back what is says:
 {{{
 /usr/bin/g++-4.2 -arch ppc64 -dM -E - < /dev/null | grep -i ppc
 /usr/bin/g++-4.2 -arch ppc -dM -E - < /dev/null | grep -i ppc
 }}}

 If the results are what I expect, then I can create a patch that might
 work to allow the build to at least finish.

-- 
Ticket URL: <https://trac.macports.org/ticket/47987#comment:27>
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