[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 ryandesign):

 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?

 It behaves the same way as any other variant. The variants specified are
 passed down to any dependencies that have not yet been installed. Any
 dependencies that have already been installed are kept at whatever
 variants they already had.

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Ticket URL: <https://trac.macports.org/ticket/58646#comment:13>
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