[MacPorts] #44193: qt: allow side by side installation of qt4-mac and qt5-mac

[MacPorts]

#44193: qt: allow side by side installation of qt4-mac and qt5-mac
-------------------------------+------------------------
  Reporter:  mojca@…           |      Owner:  mcalhoun@…
      Type:  enhancement       |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:
Resolution:                    |   Keywords:
      Port:  qt4-mac, qt5-mac  |
-------------------------------+------------------------

Comment (by michaelld@…):

 The actual changes to make this happen should be pretty small: edit the qt
 portfiles and change the qtdir to something else that is unique to each
 Qt.

 That said: I think the greatest challenge in this ticket's implementation
 is the sheer number of ports that depend on Qt (4 or 5) that will have to
 be worked over to make sure they are doing the right thing. Once the qtdir
 has been committed, there will be lots of ports that work correctly "out
 of the box".  But, there will also be -lots- of ports that misbehave: some
 will not use qtdir / QMAKE correctly & have to be told specifically what
 to do; others will need to be patched to get them working since they hard-
 wire were QMAKE is located (or, something like that).

 I think to do diligence on this, we need 2 or 3 of us devs willing to
 commit a week's time to fix issues once the primary commit is made, pretty
 much -just- fixing Qt issues. The next week, we can drop down to 2, then
 down to 1, and so forth. All in my opinion, of course; I'd love to be
 proven wrong!

 I'm all for having side-by-side Qt installations; I just don't have the
 time right now to put in to make it so.

-- 
Ticket URL: <https://trac.macports.org/ticket/44193#comment:18>
MacPorts <http://www.macports.org/>
Ports system for OS X