[MacPorts] #59094: Error after updating XCode to 11.0

[MacPorts]

#59094: Error after updating XCode to 11.0
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 Reporter:  eisGeist  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.0
 Keywords:            |       Port:
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 Dear Sirs,

 since yesterday, after I updated XCode to most recent release 11.0, I've
 been not able to run "sudo port upgrade updated".

 I receive two error messages:

     - Unable to determine location of a macOS SDK;
     - Unable to open port: can't read "configure.sdkroot": Unable to
 determine location of a macOS SDK.

 I downloaded the most recent release of MacPorts and reinstalled it. As
 before "sudo port selfupdate" runs smoothly but had no success in
 completing "sudo port upgrade updated".

 Can you provide any help/hint about this?
 Many thanks in advance!

 Best regards,

-- 
Ticket URL: <https://trac.macports.org/ticket/59094>
MacPorts <https://www.macports.org/>
Ports system for macOS