[MacPorts] #61589: clang-devel @20201115: build fails on 10.9 with CMake Error: sdk_has_arch_support Function invoked with incorrect arguments for function

[MacPorts]

#61589: clang-devel @20201115: build fails on 10.9 with CMake Error:
sdk_has_arch_support Function invoked with incorrect arguments for function
--------------------------+----------------------
  Reporter:  cave-canem   |      Owner:  kencu
      Type:  defect       |     Status:  reopened
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  clang-devel  |
--------------------------+----------------------

Comment (by kencu):

 all the new clang-devels failed with this same error on older systems.

 I'll get to it.

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Ticket URL: <https://trac.macports.org/ticket/61589#comment:9>
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