[MacPorts] #59113: gcc8: cannot find systems headers with Xcode 11

[MacPorts]

#59113: gcc8: cannot find systems headers with Xcode 11
-----------------------+--------------------
  Reporter:  abyrvalk  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  gcc8      |
-----------------------+--------------------

Comment (by kencu):

 see <https://gcc.gnu.org/bugzilla//show_bug.cgi?id=79885> for some further
 context.

-- 
Ticket URL: <https://trac.macports.org/ticket/59113#comment:7>
MacPorts <https://www.macports.org/>
Ports system for macOS