[MacPorts] #55441: libcxx, libcxxabi: also install into the SDKs

[MacPorts]

#55441: libcxx, libcxxabi: also install into the SDKs
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  Reporter:  ryandesign         |      Owner:  jeremyhu
      Type:  enhancement        |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:  snowleopard haspatch
      Port:  libcxx, libcxxabi  |
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Comment (by mojca):

 Ticktet from long time ago: #44125

 I support installing libc++ to the SDK.

 Not sure about what to do for 10.5 or what to do with SDK for 10.6 on Lion
 where the location of that SDK is not even fixed, but depends on the Xcode
 version. (Maybe nothing for now?)

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Ticket URL: <https://trac.macports.org/ticket/55441#comment:8>
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