[MacPorts] #59088: Xcode update broke linkages

[MacPorts]

#59088: Xcode update broke linkages
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  Reporter:  rhc54   |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.6.0
Resolution:          |   Keywords:
      Port:          |
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Comment (by aivazis):

 In the meantime, can can someone show us how to generate a gcc specs file
 and drop it in the magic place to redirect sysroot to the new location?

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Ticket URL: <https://trac.macports.org/ticket/59088#comment:6>
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