[MacPorts] #52468: gtk3 3.22.0_0 build fails on 10.5 ppc

[MacPorts]

#52468: gtk3 3.22.0_0 build fails on 10.5 ppc
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  Reporter:  dgonyier@…  |      Owner:  devans@…
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:  leopard
      Port:  gtk3        |
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Comment (by jeremyhu@…):

 Leopard is in a weak spot when it comes to newer toolchains because libc++
 (which newer versions of clang depend on) doesn't work well with
 exceptions on Leopard due to issues getting libunwind built right.  See
 http://www.llvm.org/bugs/show_bug.cgi?id=22270.  You'll want to fix that
 bug if you want to have any hope of libc++ working on Leopard.

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Ticket URL: <https://trac.macports.org/ticket/52468#comment:10>
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