[MacPorts] #70502: ccl: clang-9.0 dependency hinders installation on Sonoma 14.5 x86_64

[MacPorts]

#70502: ccl: clang-9.0 dependency hinders installation on Sonoma 14.5 x86_64
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  Reporter:  kreuter  |      Owner:  easye
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  ccl      |
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Comment (by tomio-arisaka):

 See [https://github.com/Clozure/ccl/issues/271 Xcode 11 tools can't build
 CCL]

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Ticket URL: <https://trac.macports.org/ticket/70502#comment:4>
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