[MacPorts] #60893: gcc5 unusable on Catalina: ld: unsupported tapi file type '!tapi-tbd' in YAML file

[MacPorts]

#60893: gcc5 unusable on Catalina: ld: unsupported tapi file type '!tapi-tbd' in
YAML file
---------------------------+--------------------------------
  Reporter:  chrstphrchvz  |      Owner:  macports-tickets@…
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.3
Resolution:                |   Keywords:
      Port:  gcc5          |
---------------------------+--------------------------------

Comment (by mascguy):

 I'm seeing a similar link-time issue when building OpenBLAS +native,
 albeit using the version of 'ld' that ships with the Xcode 12.0 command-
 line tools:

 https://trac.macports.org/ticket/61236

 Not sure whether this is notable for your folks' case, but just figured
 I'd mention it...

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Ticket URL: <https://trac.macports.org/ticket/60893#comment:13>
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