On 12.05.2014 23:29, Daniel Bowen wrote: > > If anyone has other things to add, please do.
Maybe it is worth to think about a Qt library which really only provides essential stuff. What would such a library contain, when all the "but the GUI needs it" was removed? Peter > > Along the way, I have a couple of things that I'll send in separate e-mails > (-no-feature-REGULAREXPRESSION not working and qtdiag building even though > -no-gui specified). > > Thanks! > -Daniel > > -----Original Message----- > From: interest-bounces+qtmailinglist1=bowensite....@qt-project.org > [mailto:interest-bounces+qtmailinglist1=bowensite....@qt-project.org] On > Behalf Of Peter Kümmel > Sent: Monday, May 12, 2014 2:48 AM > To: interest@qt-project.org > Subject: Re: [Interest] Size of libQt5Core in 5.3 > > On 11.05.2014 09:20, Daniel Bowen wrote: >> I have an embedded environment where we usenon-UI parts of Qt (Qt Core, Qt > Networking)on an ARM host processor. >> >> We’ve been using 4.8.4for a little while. There’s some other changes > comingto this code, and we’ve been looking to move >> to5.xwith the upcoming 5.3. After working through several issues, I gotthe > release candidate ofQt5.3compiledfor this >> processor. At first, libQt5Core.so.5.3.0was 6.6MB! With 4.8.4,we were > able to getlibQtCore4down to2.6 MB. > > Here libQt5Core needs 3905596b after stripping (ARM, GCC 4.8.2, -O3) and > with these options > > -no-c++11 -optimized-qmake -no-kms -no-cups -no-nis -no-iconv -system-zlib > -system-pcre -no-pch -release -shared > -largefile -opensource -confirm-license -gui -widgets --enable-linuxfb > -no-directfb -no-xcb -opengl es2 -eglfs -openssl > -no-fontconfig -no-gif -system-libjpeg -system-libpng -no-dbus -no-tslib > -no-glib -no-icu -nomake examples > > For removing features you could also use 'qconfig' (now in the qttools > package). > > http://qt-project.org/doc/qt-4.8/fine-tuning-features.html > > (Seems documentation got lost in Qt5) > > Peter > >> >> So I started putting in -skip, -no-feature, etc.having features wewould > still use, but other things stripped out.I also >> had a mkspec use -Os to optimize for size.Usingsomething likethis: >> >> OPENSSL_LIBS="-L(pathfor openssl)-lssl -lcrypto" ./configure -release > -opensource -prefix(pathfor >> prefix)-extprefix(pathfor prefix)-shared -largefile -I(path for > jpeg)-L(path for jpeg)-sysroot(path for >> sysroot)-xplatform linux-arm_v5t_le-g++ -confirm-license -system-zlib > -system-libpng -system-libjpeg -openssl-linked >> -no-accessibility -no-freetype -no-harfbuzz -no-glib -no-gui -no-widgets > -no-cups -no-iconv -no-evdev -no-icu >> -no-fontconfig -no-pch -no-dbus -no-xcb -no-directfb -no-linuxfb -no-kms > -no-opengl -nomake examples -nomake tests -skip >> qtdeclarative -skip qtdoc -skip qtgraphicaleffects -skip qtlocation -skip > qtquick1 -skip qtquickcontrols -skip qtscript >> -skip qttranslations -skip qtwebkit -skip qtwebkit-examples -skip > qtx11extras -skip qtxmlpatterns >> -no-feature-TEXTHTMLPARSER -no-feature-TEXTODFWRITER -no-feature-CSSPARSER > -no-feature-CONCURRENT >> -no-feature-DRAGANDDROP -no-feature-SESSIONMANAGER -no-feature-SHORTCUT > -no-feature-ACTION -no-feature-DOM >> -no-feature-FILESYSTEMMODEL -no-feature-FILESYSTEMWATCHER > -no-feature-ITEMVIEWS -no-feature-DIRMODEL >> -no-feature-STANDARDITEMMODEL -no-feature-PROXYMODEL > -no-feature-SORTFILTERPROXYMODEL -no-feature-IDENTITYPROXYMODEL >> -no-feature-STRINGLISTMODEL -no-feature-LISTVIEW -no-feature-TABLEVIEW > -no-feature-TREEVIEW -no-feature-DATAWIDGETMAPPER >> -no-feature-COLUMNVIEW -no-feature-MOVIE -no-feature-IMAGEFORMAT_PPM > -no-feature-IMAGEFORMAT_XBM >> -no-feature-IMAGEFORMAT_XPM -no-feature-FREETYPE -no-feature-BIG_CODECS > -no-feature-ICONV -no-feature-FTP >> -no-feature-ACCESSIBILITY -no-feature-ANIMATION -no-feature-STATEMACHINE > -no-feature-GESTURES -no-feature-DBUS >> -no-feature-XMLSCHEMA-verbose >> >> It went down to 5.3 MB.5.3 MB was still too bit, so I went through the > features from qfeatures.txt, and >> did“-no-feature”for every single feature listed. libQt5Core wouldn’t > compile without LIBRARY, SETTINGS and >> REGULAREXPRESSION, so I took the“-no-feature”out for those things. Even > with all of that removed, libQt5Core.so.5.3.0 >> was still4.3MBafterbeing stripped. Thatwould have some things removed > though that we want. >> >> Is there any way to get Qt Core to compile smaller, like under 3MB?Am I > missing anything to >> skipor“-no-xyz”or“-nomake”or“-no-feature”? Why is libQt5Core.so.5.3.0 so > much bigger than libQtCore4.so.4.8.4? >> >> We may just need to moveto 4.8.6 and leave it there instead of jumping > onto 5.x. >> >> Thanks, >> >> -Daniel >> >> >> >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest