[MacPorts] #44581: cmake and CMAKE_OSX_SYSROOT value on mac os 10.10 yosemite

[MacPorts]

#44581: cmake and CMAKE_OSX_SYSROOT value on mac os 10.10 yosemite
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  Reporter:  daniele.pontillo@…  |      Owner:  macports-tickets@…
      Type:  defect              |     Status:  new
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:  2.3.1
Resolution:                      |   Keywords:  yosemite
      Port:  cmake               |
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Comment (by cal@…):

 I've attached a patch against the Portfile that achieves the same without
 fiddling with Darwin.cmake.

 Maintainer: Is there something that requires us to build cmake with a
 deployment target, especially when it refuses to build using a deployment
 target but without and SDK?

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Ticket URL: <https://trac.macports.org/ticket/44581#comment:64>
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