[MacPorts] #65306: fizz: @2022.06.06: builds failing for 10.14: invalid output constraint '=@ccc' in asm

[MacPorts]

#65306: fizz: @2022.06.06: builds failing for 10.14: invalid output constraint
'=@ccc' in asm
----------------------+----------------------
  Reporter:  mascguy  |      Owner:  danchr
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.7.2
Resolution:           |   Keywords:
      Port:  fizz     |
----------------------+----------------------

Comment (by danchr):

 The correct fix for this to use a newer Clang from MacPorts, right? Is
 there a standard way of picking the version?

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Ticket URL: <https://trac.macports.org/ticket/65306#comment:2>
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