[MacPorts] #62164: qemu @5.2.0: build failure with +cocoa

[MacPorts]

#62164: qemu @5.2.0: build failure with +cocoa
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  Reporter:  Ionic   |      Owner:  raimue
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  legacy-os
      Port:  qemu    |
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Comment (by jasonliu--):

 Replying to [comment:4 Ionic]:
 > Oh, and that file actually does the opposite, if I understand it
 correctly. It defines deprecated versions which probably were removed in
 newer OS versions. We'd need the other way around, providing the new stuff
 mapped to the old, deprecated one.

 The file that Ken point to, which was written by me, {{{#define}}}s the
 old names to the new names. This is because my file intervenes and patches
 the ''system-wide'' AppKit framework, and makes it look like a "newer"
 (i.e. post-10.12) AppKit framework. The project's source code is left
 unchanged, because from the perspective of the source code, it is
 {{{#include}}}-ing an AppKit that has all of the new entities.

 The technique that you are describing, where the new names get mapped to
 the old names, is the technique that is used if you are patching the
 entities in the project's source code, but leaving the system-wide AppKit
 framework untouched.

 I hope the reasoning behind each technique is clear.

-- 
Ticket URL: <https://trac.macports.org/ticket/62164#comment:11>
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