[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
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  Reporter:  mojca@…           |      Owner:  mcalhoun@…
      Type:  enhancement       |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:
Resolution:                    |   Keywords:
      Port:  qt4-mac, qt5-mac  |
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Comment (by hans_meine@…):

 AFAIK, -no-exceptions ''was'' the default (maybe only de-facto) in the
 past, in the era of GCC 2.95 and 3.x, when it would seriously speed up
 large Qt-based projects (e.g. KDE).  However, compilers have become more
 efficient in the meantime, and more people are actually ''making use'' of
 exceptions (e.g. in the past, their use was discouraged in KDE for
 performance reasons), so the recommendation was changed.
 (With -no-exceptions, you would have to catch exceptions before entering
 Qt; I do not want to imply that it is not possible at all to use
 exceptions with -no-exceptions.)

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Ticket URL: <https://trac.macports.org/ticket/44193#comment:69>
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