[MacPorts] #54699: mame: New port

[MacPorts]

#54699: mame: New port
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 Reporter:  mf2k        |      Owner:
     Type:  submission  |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  mame
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 Here is my current attempt of a Portfile for mame.

 It is failing to find Macports libsdl2 files though.

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Ticket URL: <https://trac.macports.org/ticket/54699>
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