[Interest] Qt .dlls size reduction

[Mike Chinander]

Are you including only the minimal set of Qt dlls needed for your
application?

On Fri, Aug 7, 2015 at 8:31 AM, Rafael Machado <
rafaelrodrigues.machado at gmail.com> wrote:

> Hi everyone
>
> This is my first question on this mail list, so sorry for possible trivial
> questions.
>
> I have task to reduce the size of an installer of an application from my
> company.
> What I checked is that the qt dlls that we use are kind of big, so my idea
> was to try to reduce these dlls sizes.
>
> To do it I have compiled qt removing several modules that we don't use.
> Something like:
>
> configure -release -confirm-license -opensource -nomake examples -nomake
> tests -no-evdev -no-mtdev -no-inotify -no-system-proxies -no-fontconfig
> -no-harfbuzz -no-plugin-manifests -no-ssl -no-openssl -no-dbus
> -no-audio-backend -no-wmf-backend -no-qml-debug -no-directwrite
> -no-direct2d -no-native-gestures -no-style-windows -no-style-windowsxp
> -no-style-windowsvista -no-style-fusion -skip qt3d -skip qtactiveqt -skip
> qtandroidextras -skip qtdoc -skip qtdocgallery -skip qtfeedback -skip
> qtlocation -skip qtmacextras -skip qtmultimedia -skip qtrepotools -skip
> qtscript -skip qtsensors -skip qtserialport -skip qtsvg -skip qttools -skip
> qttranslations -skip qtwayland -skip qtwebengine -skip qtwebkit -skip
> qtwebkit-examples -skip qtwinextras -skip qtx11extras
>
> After doing this, the qtcore.dll was reduced from 4.928.000 bytes
> to 4.617.728 bytes.
>
> I have checked at the documentation, and there are some options to remove
> some features from the packages. For example, in case, we don't need the
> feature UDPSOCKET for example, so adding to the configuration command the
> option -no-feature-UDPSOCKET should remove unneeded things. (Features found
> at C:\cygwin\home\.............\qtbase\src\corelib\global\qfeatures.txt)
>
> The problem is that the option to remove features seems to be available
> just for linux-embedded and not for the windows version of qt.
> Is my understanding correct ?
>
> The last question. Is if is there any other option to try to reduce the
> .dll sizes ?
>
> Thanks for the help.
>
> Thanks and Regards
> Rafael R. Machado
>
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>
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