[Interest] Qt 4.8.x and OS X 10.8 Mountain Lion - my experience

Yang Fan missdeer at gmail.com
Mon Jul 30 11:19:58 CEST 2012

What about macx-clang mkspec, can Qt 4.8.x be built by clang successfully
on ML?

On Mon, Jul 30, 2012 at 5:08 PM, Till Oliver Knoll <
till.oliver.knoll at gmail.com> wrote:

> Hello,
> I did a *very* quick test of my Qt application, compiled against Qt
> 4.8.1 (coming from the "Qt SDK" which unfortunatelly still doesn't
> seem to provide an up-to-date Qt 4.8.2) after upgrading from Lion to
> Mountain Lion (on some "I don't care what happens but I'm curious to
> see" MacBook Pro - my actual work iMac is still running Snow Leopard
> ;))
> First thing I noticed that the command line tools (gcc, ...) were
> gone: Qt Creator complained about a "missing toolchain" (or
> something). So after starting up XCode 4.4, in some download dialog",
> you can download the "Command Line Tools". After restarting Qt Creator
> the compilation worked again, gcc was picked up automatically again.
> I got the usual "This platform is not supported" warning coming from
> some Qt header, but apart from that everything compiled and linked
> fine (against the usual QtCore, QtGui and the "QtXml" (?). But no
> QtWebKit, for instance).
> Quickly starting the application (based on QGraphicsScene/View) and
> testing some touch-based graphics rotations/drawing everything worked
> fine - still with the same quirks as before
> (https://bugreports.qt-project.org/browse/QTBUG-15663 for instance -
> the "raster" painter does solve this issue, but has still worse issues
> elsewhere: e.g https://bugreports.qt-project.org/browse/QTBUG-22043)
> But apart from that everything seems to work "as before" (on Lion). I
> did not yet test any "App Store" related issues. So I guess it is
> merely a matter of incrementing the "supported platform" in said Qt
> header for now... ;)
> Off course there are still plenty of OS X specific issues to be
> implemented:
>   https://bugreports.qt-project.org/browse/QTBUG-21606
> For me the next two things to tackle would be
> 1.      Lion scrollbars support
> To make a Qt application visually more "Mac like" again :)
> 2.      HighDPI Display support
> Probably not just for Mac, but in general an upcoming "hot topic"
> 3.     Fullscreen support
> That is pretty easy to do actually: in my application I already did
> this with a couple of platform-specific (Objective-C) lines... see
> again https://bugreports.qt-project.org/browse/QTBUG-22043
> (attachement contains example code).
> "Autosave" support probably doesn't make much sense, as Qt does not
> offer an equivalent of NSDocument class (yet)? And that would be a
> pre-requisite for "App termination" support.
> Cheers, Oliver
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Fan Yang
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