[MacPorts] #67263: supertuxkart @1.4: builds fail for 10.12 and earlier: IOSurface/IOSurfaceRef.h not found

[MacPorts]

#67263: supertuxkart @1.4: builds fail for 10.12 and earlier:
IOSurface/IOSurfaceRef.h not found
---------------------------+--------------------
  Reporter:  mascguy       |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.8.1
Resolution:                |   Keywords:
      Port:  supertuxkart  |
---------------------------+--------------------

Comment (by kencu):

 apparently there is some kind of sdl2 vulkan compat layer they used:

 https://github.com/supertuxkart/stk-
 code/commit/17d26338f8ec19784b9a73b285b6b0f7cc7e1dd1

 this has been in for some time, so maybe it’s going to be just adjusting
 to the master header as Ryan suggested. Easy start, anyway.

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Ticket URL: <https://trac.macports.org/ticket/67263#comment:6>
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