[MacPorts] #43838: emulators/qemu: add aarch64 (64-bit ARM) target.

[MacPorts]

#43838: emulators/qemu: add aarch64 (64-bit ARM) target.
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  Reporter:  crossd@…     |      Owner:  raimue@…
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  qemu         |
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Changes (by raimue@…):

 * status:  new => assigned


Comment:

 Since `aarch64` pulls in `arm` as base architecture anyway, I would prefer
 to add it to the existing `+arm` variant (similar to +sparc including both
 `sparc` and `sparc64`).

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Ticket URL: <https://trac.macports.org/ticket/43838#comment:2>
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