[MacPorts] #58493: cctools: using clang < 5.0 as default assembler generates assembly errors in some cases

[MacPorts]

#58493: cctools: using clang < 5.0 as default assembler generates assembly errors
in some cases
----------------------+----------------------
  Reporter:  kencu    |      Owner:  jeremyhu
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  cctools  |
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Comment (by mouse07410):

 > What it does, and will continue to do in the future, is at runtime check
 to see what is installed at that time, and decide what to use based on the
 outcome of this check...

 What I'm asking for is including the Xcode clang in that check, and making
 it possible for the user to request that the Xcode clang is selected if
 it's installed. Better yet, do this by default - use Xcode clang if it's
 installed, unless the user explicitly requested something else.

 [[br]]

 > The devel clang port . . . if the user decides they want cctools
 installed with the devel llvm variant, then force this to be the (only)
 clang version considered, on the basis they are doing this for some
 specific non-standard reason

 Yes, that makes sense. Allow the user to specify this non-standard
 variant, even if it's a devel version.

-- 
Ticket URL: <https://trac.macports.org/ticket/58493#comment:29>
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