[MacPorts] #58646: gcc8 @8.3.0_4 +universal: does not build/install universal libraries

[MacPorts]

#58646: gcc8 @8.3.0_4 +universal: does not build/install universal libraries
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  Reporter:  Ionic      |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  gcc8 gcc9  |
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Comment (by cjones051073):

 Replying to [comment:8 kencu]:
 > I don't know exactly how the `+universal` variant propagates through
 dependencies, but I would have thought that it would have worked like
 this:
 >
 > `openblas +universal` --> `gcc9 +universal` --> `libgcc +universal` -->
 `libccN +universal`
 >
 > Is there a breakdown somewhere in this chain of dependencies?

 Personally, i have no idea. I have never had any need for the universal
 variants for any ports, so have no experience with how it works.

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Ticket URL: <https://trac.macports.org/ticket/58646#comment:9>
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