[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 michaelld):

 Looking forward to the arm64 support in llvm-devel ... as well as Ken's
 flang ... those are blockers for me right now getting UHD / Volk / GNU
 Radio to build on arm64. I can do some things with these ports, but not
 enough to be useful yet. Soon ... very soon ...

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Ticket URL: <https://trac.macports.org/ticket/60941#comment:5>
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