[MacPorts] #65934: mesa @22.1.7 +tests does not build on PPC Leopard, Mac OS X 10.5.8, because of Undefined symbols for architecture ppc

[MacPorts]

#65934: mesa @22.1.7 +tests does not build on PPC Leopard, Mac OS X 10.5.8, because
of Undefined symbols for architecture ppc
------------------------+-------------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.2
Resolution:             |   Keywords:  leopard ppc
      Port:  mesa       |
------------------------+-------------------------

Comment (by ballapete):

 The build process is over 300 steps further than where it crashed first,
 so the additional line to `Portfile` is working (and should become part of
 it).

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Ticket URL: <https://trac.macports.org/ticket/65934#comment:12>
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