Re: [MacPorts] #70600: poppler requires C++20 which is not available on 10.4–10.5

[MacPorts]

#70600: poppler requires C++20 which is not available on 10.4–10.5
---------------------------+----------------------------
  Reporter:  barracuda156  |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.10.1
Resolution:                |   Keywords:  tiger, leopard
      Port:  poppler       |
---------------------------+----------------------------

Comment (by barracuda156):

 This is quite unfortunate, and users keep complaining that they are unable
 to build this or that app on 10.5 due to a broken `poppler`. Of course the
 right solution would have been to merge my PR switching old systems to
 modern gcc, but since nobody is interested in fixing the toolchain, at
 least some fallback for < 10.6 will be helpful. (To be clear, this is not
 my personal problem, everything works on my end. But there are people
 affected by this, and not everyone is an expert in tweaking MacPorts
 setup.)

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Ticket URL: <https://trac.macports.org/ticket/70600#comment:4>
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