[MacPorts] #62982: qt6: add port(s) for new Qt version 6

[MacPorts]

#62982: qt6: add port(s) for new Qt version 6
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  Reporter:  JDLH         |      Owner:  (none)
      Type:  request      |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.1
Resolution:               |   Keywords:
      Port:  qt6 qt5 qt4  |
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Comment (by reneeotten):

 @jhoyt4 does {{{qt6-qtbase}}} build consistently for you? For me it pretty
 much fails all the time with {{{ninja: fatal: pipe: Too many open
 files}}}. For me that is resolved when adding {{{use_parallel_builds no}}}
 but then of course building takes quite a while... I am not trying with
 {{{build.cmd "ninja"}}} removed to see if that helps.

 I still think we can build the {{{qtbase}}} subport with {{{CMake}}} as
 well and don't necessarily need to use their {{{configure}}} script, which
 will just translate that to a CMake command anyway. If we can use the
 cmake PG that might simplify settings for compiler options/flags,
 deployment_targets, and all of that stuff. Before I try though, have you
 attempted that or did you stick with what was initially in the {{{qt5}}}
 Portfile?

 I think there are a few changes needed, I've added them to
 [https://github.com/reneeotten/macports-ports/tree/qt6 my fork] in case
 you're interested. I'll give you a chance to take a look but they are
 pretty obvious I think and should be uncontroversial.

-- 
Ticket URL: <https://trac.macports.org/ticket/62982#comment:6>
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