[MacPorts] #49001: Add support to provide a clang-based as wrapper

[MacPorts]

#49001: Add support to provide a clang-based as wrapper
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  Reporter:  howarth.at.macports@…  |      Owner:  jeremyhu@…
      Type:  defect                 |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.3.3
Resolution:                         |   Keywords:
      Port:  clang-3.7              |
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Comment (by jeremyhu@…):

 Multiple things wrong with that statement.

 1) cctools in OS X is only used to produce libmacho, not as.

 2) as (and most of the other toolchain bits) in /usr/bin are all xcrun
 stubs.  They just redirect to the toolchain in the selected Xcode.

 3) The cctools provided by Xcode 7 are of more interest to you.

 You just need to be patient.

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Ticket URL: <https://trac.macports.org/ticket/49001#comment:16>
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