[MacPorts] #59246: ffmpeg @4.2.1_1 / x265 @3.2: compile fine but cannot be executed/crash immediately mac os 10.15 catalina / Xcode 11.1

[MacPorts]

#59246: ffmpeg @4.2.1_1 / x265 @3.2: compile fine but cannot be executed/crash
immediately mac os 10.15 catalina / Xcode 11.1
-------------------------+----------------------
  Reporter:  jonasjonas  |      Owner:  dbevans
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.1
Resolution:              |   Keywords:  catalina
      Port:  ffmpeg      |
-------------------------+----------------------

Comment (by breiter):

 I added `compiler.whitelist  macports-clang-8.0` to the Portfile for x265
 and that fixes it.

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Ticket URL: <https://trac.macports.org/ticket/59246#comment:16>
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