[MacPorts] #65939: libunwind: do not force +universal on <11, perhaps?

[MacPorts]

#65939: libunwind: do not force +universal on <11, perhaps?
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  Reporter:  barracuda156  |      Owner:  jeremyhu
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  powerpc, snowleopard, rosetta
      Port:  libunwind     |
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Comment (by barracuda156):

 Replying to [comment:1 kencu]:
 > For your rosetta setup you should override base and set your universal
 archs in macports.conf to just ppc

 Sure, I can easily solve this issue locally for myself via macports.conf
 or invoking `-universal`, but why is it forced in the first place?
 I mean, I am not gonna fight for this, but such setting creates problems
 on older OS. ''Not just Rosetta – it gonna turn a big problem on 10.5.8
 with perfectly legitimate ppc+ppc64.''

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Ticket URL: <https://trac.macports.org/ticket/65939#comment:2>
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