[MacPorts] #61795: mame: validate and certify build for Big Sur, both x86_64 and arm64

[MacPorts]

#61795: mame: validate and certify build for Big Sur, both x86_64 and arm64
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  Reporter:  mascguy  |      Owner:  mascguy
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  mame     |
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Description changed by mascguy:

Old description:

> Tracking ticket related to Mame support for Big Sur, targeting both
> x86_64 and arm64.
>
> Related Items:
> * For the arm64 build, enable warnings for undefined functions.

New description:

 Tracking ticket related to Mame support for Big Sur, targeting both x86_64
 and arm64.

 Related Items:
 * For the arm64 build, enable warnings for undefined functions, and
 anything else applicable.
 * Join any arm64-related discussions, to ensure a complete understanding
 of relevant info.

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Ticket URL: <https://trac.macports.org/ticket/61795#comment:4>
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