[MacPorts] #56994: vim-8.1.0280 does not build under OS X 10.5.8

[MacPorts]

#56994: vim-8.1.0280 does not build under OS X 10.5.8
--------------------------+-------------------------------
  Reporter:  josephsacco  |      Owner:  raimue
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.3
Resolution:               |   Keywords:  leopard legacy-os
      Port:  vim          |
--------------------------+-------------------------------

Comment (by josephsacco):

 ObjC tends to load every framework under the sun when AppKit is
 referenced.  The header file where the macro is defined is
 {{{
 /System/Library/Frameworks/CoreVideo.famework/Headers/CVBase.h
 }}}
 whose contents matches those of the file of the same name found in the
 developer SDK for OSX 10.5.

 Programming ancient Macs is akin to riding a dead horse. The prudent thing
 to do when you discover you are riding a dead horse is to dismount. Still,
 "we" persist.

 -Joseph

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Ticket URL: <https://trac.macports.org/ticket/56994#comment:5>
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