[MacPorts] #33259: cmake portgroup: out of source build option, possibly by default

[MacPorts]

#33259: cmake portgroup: out of source build option, possibly by default
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:                |
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Comment (by michaelld@…):

 Cool. That makes me happy without even putting the check in place!

 I think the only downside to using a cmake-1.1 is that any non-OOS changes
 to it also need to go into cmake-1.0. So, some duplication that would
 otherwise not be necessary. Still, it seems like a small penalty to pay to
 get this functionality in place without changes down the road. Probably
 best to add a note to both PortGroups to this effect (changing one
 requires changing the other in the same way).

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Ticket URL: <https://trac.macports.org/ticket/33259#comment:47>
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