[MacPorts] #49001: clang-3.7 subport forces a downgrade in the assembler on Xcode 7

[MacPorts]

#49001: clang-3.7 subport forces a downgrade in the assembler on Xcode 7
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  Reporter:  howarth.at.macports@…  |      Owner:  jeremyhu@…
      Type:  defect                 |     Status:  closed
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.3.3
Resolution:  invalid                |   Keywords:
      Port:  clang-3.7              |
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Comment (by howarth.at.macports@…):

 Because when I tried 'sudo port -d -s install clang-3.7', the build
 dependencies include cctools. Inspection of the Portfile for llvm-3.7
 shows that...

 depends_build       port:cctools

 is defined for } elseif {${subport} eq "clang-${llvm_version}"} {.  IMHO,
 that depends_build should be protected by a conditional that doesn't set
 it for Xcode 7 or later. Also, I see the same behavior in the llvm-3.8
 Portfile for its dependencies required in the clang-3.8 subport.

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Ticket URL: <https://trac.macports.org/ticket/49001#comment:3>
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