[Interest] My experience porting to Qt5 (on OS X)

[Stephen Kelly]

On Thursday, September 13, 2012 10:26:03 Thiago Macieira wrote:
> On quinta-feira, 13 de setembro de 2012 10.19.34, Stephen Kelly wrote:
> > > And if I would
> > > forget to say QT += widgets in "model.pro", I'd simply get a linker
> > > error.
> > 
> > Only if you attempt to use something from the header which requires
> > linking.
> Also note that, by default, linking on ELF platforms does not error out in
> case of undefined symbols. Your library might link and you'll never notice
> the error until you run with an application that doesn't link to QtWidgets
> or to libraries that do.
> 
> If you want to catch this error, add to your .pro file:
> QMAKE_LFLAGS += $$QMAKE_LFLAGS_NOUNDEF

... which is the qmake/portable equivalent of what I recommended:

linux-host-g++/qmake.conf:QMAKE_LFLAGS_NOUNDEF    += -Wl,--no-undefined

Thanks,

-- 
Stephen Kelly <stephen.kelly at kdab.com> | Software Engineer
KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company
www.kdab.com || Germany +49-30-521325470 || Sweden (HQ) +46-563-540090
KDAB - Qt Experts - Platform-Independent Software Solutions
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