[MacPorts] #49109: port modifications required by making qt4-mac co-installable with Qt5

[MacPorts]

#49109: port modifications required by making qt4-mac co-installable with Qt5
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  Reporter:  rjvbertin@…  |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:               |
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Comment (by rjvbertin@…):

 That sounds like the kind of mix-up I ran into with Qt5 build system and
 using pkgconfig on OS X, which appears to be something they didn't test
 too exhaustively. Also not the 1st issue I know of with QWE's ninja-based
 build system.

 `.tbd` ... to be done indeed ...

 It *is* strange that Digia didn't test such a brand new release on an OS
 that was about to be released just after 5.5.0 . Meanwhile, this speaks
 for my approach of putting QtWebEngine in its own subport. Saves a lot of
 time and space building Qt5, too.

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Ticket URL: <https://trac.macports.org/ticket/49109#comment:6>
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