[MacPorts] #66465: ffmpeg @4.4.2_3+gpl2+jack+nonfree+x11 fails to configure after x265 3.4_0 < 3.4_1 upgrade

[MacPorts]

#66465: ffmpeg @4.4.2_3+gpl2+jack+nonfree+x11 fails to configure after x265 3.4_0 <
3.4_1 upgrade
--------------------------+--------------------
  Reporter:  tehcog       |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.8.0
Resolution:               |   Keywords:
      Port:  ffmpeg x265  |
--------------------------+--------------------

Comment (by janngobble):

 This seems to be something to do with libx265.dylib not being built.

 @KenCu, could this have something to do w/c++11?

 Zhenfu Shi had issues over on GitHub with the library not being built, but
 as he said,  -DENABLE_SHARED=OFF was there before this change. (I didn't
 add it and have no idea why that would be needed for this one addition).

 So, why would this change cause that file to disappear?

 One more thing: @tehcog's build doesn't have "highdepth" - which is the
 only place my change applies.

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Ticket URL: <https://trac.macports.org/ticket/66465#comment:10>
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