[MacPorts] #65113: MacPorts Guide: universal_archs setting not defined for macOS 10.13 - 10.15

[MacPorts]

#65113: MacPorts Guide: universal_archs setting not defined for macOS 10.13 - 10.15
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  Reporter:  hamishmb  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  guide     |    Version:  2.7.2
Resolution:            |   Keywords:
      Port:            |
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Comment (by hamishmb):

 Yeah, only just got that part somehow.

 Still, might be good to say here that universal building isn't possible on
 10.14 and 10.15 - seeing as 10.14 can still run 32-bit apps, I had assumed
 that one could target i386 with the 10.14 SDK until now. I didn't quite
 realise the implications so I imagine that maybe others won't either,
 given almost all versions can do universal builds?

 At first glance, it just looks like 10.14 and 10.15 have been forgotten.

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Ticket URL: <https://trac.macports.org/ticket/65113#comment:4>
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