[MacPorts] #61216: Virtuoso-7 fail to install on OS 10.15 with XCode 12.0

[MacPorts]

#61216: Virtuoso-7 fail to install on OS 10.15 with XCode 12.0
-------------------------+----------------------
  Reporter:  JacquesLB   |      Owner:  nerdling
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.3
Resolution:              |   Keywords:
      Port:  virtuoso-7  |
-------------------------+----------------------

Comment (by JacquesLB):

 I'm glad you identified the origin. Unfortunately, I'm not skilled enough
 to understand your fix.

 Thank you anyway. J.

-- 
Ticket URL: <https://trac.macports.org/ticket/61216#comment:12>
MacPorts <https://www.macports.org/>
Ports system for macOS