[MacPorts] #51052: gtk3 @3.20.2 +quartz build error on Mac OS X 10.7

[MacPorts]

#51052: gtk3 @3.20.2 +quartz build error on Mac OS X 10.7
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  Reporter:  martijn@…  |      Owner:  devans@…
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  gtk3       |
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Comment (by mojca@…):

 I was trying to come up with a minimal Cocoa application to reproduce the
 problem and to be able to do further tests, but I never worked with Cocoa
 (beyond doing minimalistic changes to existing code) so I wasn't able to
 proceed as fast as I could (I need to go through tutorials first and
 yesterday even auto-generated hello world without any events crashed for
 me).

 The problem is that Lion "fully supports" all those gestures and almost
 all the apps I use do. I would be motivated to spend some time getting it
 right. Maybe some of the functions were only added in 10.8. There is
 certainly a way to get it working on 10.7, but I need more time (or more
 experience or some helping hand to lead me a bit).

 Friedrich, do you know how to create a very minimal Cocoa app that listens
 to mouse events?

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Ticket URL: <https://trac.macports.org/ticket/51052#comment:12>
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