[MacPorts] #60941: llvm-5.0 llvm-6.0 llvm-7.0 llvm-8.0 llvm-9.0 llvm-10 llvm-devel: Support arm64

[MacPorts]

#60941: llvm-5.0 llvm-6.0 llvm-7.0 llvm-8.0 llvm-9.0 llvm-10 llvm-devel: Support
arm64
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  Reporter:  ryandesign                          |      Owner:  jeremyhu
      Type:  enhancement                         |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  llvm-5.0 llvm-6.0 llvm-7.0          |
  llvm-8.0 llvm-9.0 llvm-10 llvm-devel           |
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Comment (by kencu):

 the flang news is not looking optimistic in the short term at least;
 unfortunately it appears to be still in the nacent stages and is not yet
 emitting code.

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Ticket URL: <https://trac.macports.org/ticket/60941#comment:7>
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