[MacPorts] #58677: legacy support issue while building cmake (Leopard)

[MacPorts]

#58677: legacy support issue while building cmake (Leopard)
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  Reporter:  rmottola  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  leopard i386 legacy
      Port:  cmake     |
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Comment (by kencu):

 Forcing cmake to build with libc++ on Intel on 10.5 works to fix the math
 error you were having with the libstdc++ headers (that error is not in
 this ticket). That makes cmake on 10.5 Intel build the same as it does on
 every other darwin Intel system, and that path is well-trodden and so
 works. We might figure out how to fix that math error so that gcc7 can
 build cmake on darwin 10.5 Intel, but life is short, frankly...



 The `asm` error you had at the start of this ticket is something else, and
 I think may be spurious, as it has not been seen since. I don't understand
 it just yet.

 PPC on MacPorts can't presently use libc++ (I think I have one of the only
 PPC systems on earth where libc++ works on PPC, and it's not presently for
 general use). So for now, PPC builds cmake with gcc6 against the libgcc
 headers (and that works).

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Ticket URL: <https://trac.macports.org/ticket/58677#comment:7>
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