[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):

 yes, one of many changes, likely. Good thing, really, MP has kept up
 robust universal support, as that will be more easily leveraged to arm.

 My immediate priority is to add in flang, so there is some method to
 compile fortan on ARM.

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Ticket URL: <https://trac.macports.org/ticket/60941#comment:4>
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