[MacPorts] #59665: gcc9 pre-built binary can't access system SDK with Xcode 11.2 under Mojave

[MacPorts]

#59665: gcc9 pre-built binary can't access system SDK with Xcode 11.2 under Mojave
-------------------------+--------------------
  Reporter:  EJFielding  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.2
Resolution:              |   Keywords:
      Port:  gcc9 gcc7   |
-------------------------+--------------------
Changes (by mf2k):

 * keywords:  gcc9 =>
 * port:  gcc9, gcc7 => gcc9 gcc7


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Ticket URL: <https://trac.macports.org/ticket/59665#comment:1>
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