[MacPorts] #52699: cmake portgroup version 1.1

[MacPorts]

#52699: cmake portgroup version 1.1
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  Reporter:  mkae         |      Owner:  mkae
      Type:  enhancement  |     Status:  accepted
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  cmake        |
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Comment (by RJVB):

 > Did you mean cmake.install_rpath or am I misunderstanding something
 there?

 Since I got the option to work to satisfaction I gave it the same name as
 the old function, to be in line with the other options.

 QtCurve-qt5 +qtonly uses the feature:
 https://github.com/RJVB/macstrop/tree/master/kde/QtCurve

 I have verified that the setting is handed off to CMake correctly, I
 haven't rebuilt the port with that variant. I have however just tested the
 feature elsewhere, and it works as intended.

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Ticket URL: <https://trac.macports.org/ticket/52699#comment:24>
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