2016-07-13 14:06 GMT+02:00 Elvis Stansvik <elvst...@gmail.com>: > 2016-07-13 14:00 GMT+02:00 alexander golks <a...@golks.de>: >> Am Wed, 13 Jul 2016 12:37:22 +0200 >> schrieb Elvis Stansvik <elvst...@gmail.com>: >> >>> 2016-07-13 12:34 GMT+02:00 Elvis Stansvik <elvst...@gmail.com>: >>> > I'm working on packaging an application using QtWidgets as an AppImage >>> > and I'm looking at which of the Qt plugins I must bundle. >>> > >>> > I'll run an strace while using the application, but I thought I'd also >>> > ask here: When in general does Qt load its plugins? For some plugins >>> > (such as the platform plugin), I expect it to be quite early. But what >>> > about imageformat plugins, is there a policy that they be loaded as >>> > late as possible? >>> >>> To clarify, I wasn't only talking about imageformat plugins, but >>> plugins in general. The imageformat plugins was just an example where >>> I suspect they may be loaded as late as possible? >>> >>> Elvis >>> >>> > >>> > In short I'm wondering if I must use every nook and cranny of the >>> > application during my strace run, to catch all plugins, or if it's >>> > enough to say wait until the QApplication and QMainWindow is up. >>> > >>> > Thanks in advance, >>> > Elvis >> >> i would not use strace to get a packaging list for the plugins to deploy. >> simply use the plugins you want/need. >> >> plugins are loaded when requested first time. so its not safe to wait >> until QApplication and QMainWindow are up. > > Alright, yes I realized this after I sent my first mail (see my other > mail just now). > > It's easy to know that if I say want to load JPEGs, I need the > imageformats/libqjpeg.so plugin. But there are so many plugins in a Qt > installation it's hard as an application developer to know for sure > which you need. > > In the Qt I'm using to build this AppImage, there's currently: >
If I'm going to guess a little: > tmp/usr/lib/qt5/plugins/bearer/libqconnmanbearer.so > tmp/usr/lib/qt5/plugins/bearer/libqgenericbearer.so > tmp/usr/lib/qt5/plugins/bearer/libqnmbearer.so I don't think I need these, since I'm not doing anything with a GPS? > tmp/usr/lib/qt5/plugins/designer/libcontainerextension.so > tmp/usr/lib/qt5/plugins/designer/libcustomwidgetplugin.so > tmp/usr/lib/qt5/plugins/designer/libqquickwidget.so > tmp/usr/lib/qt5/plugins/designer/libtaskmenuextension.so > tmp/usr/lib/qt5/plugins/designer/libworldtimeclockplugin.so These I think are only required by Qt Designer? > tmp/usr/lib/qt5/plugins/generic/libqevdevkeyboardplugin.so > tmp/usr/lib/qt5/plugins/generic/libqevdevmouseplugin.so > tmp/usr/lib/qt5/plugins/generic/libqevdevtabletplugin.so > tmp/usr/lib/qt5/plugins/generic/libqevdevtouchplugin.so > tmp/usr/lib/qt5/plugins/generic/libqtuiotouchplugin.so These ones I'm unsure about, they sound quite important? > tmp/usr/lib/qt5/plugins/iconengines/libqsvgicon.so If I want to use SVG icons I'll include this one? > tmp/usr/lib/qt5/plugins/imageformats/libqgif.so > tmp/usr/lib/qt5/plugins/imageformats/libqico.so > tmp/usr/lib/qt5/plugins/imageformats/libqjpeg.so > tmp/usr/lib/qt5/plugins/imageformats/libqsvg.so These I'll include according to my requirements, that's easy. > tmp/usr/lib/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so > tmp/usr/lib/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so These ones's I'm unsure about. They could be important.. or are they just for specialized input methods? > tmp/usr/lib/qt5/plugins/platforms/libqlinuxfb.so > tmp/usr/lib/qt5/plugins/platforms/libqminimal.so > tmp/usr/lib/qt5/plugins/platforms/libqoffscreen.so > tmp/usr/lib/qt5/plugins/platforms/libqxcb.so Out of these I think I'll only need the XCB plugin, since my app is exclusively for X11. > tmp/usr/lib/qt5/plugins/platformthemes/libqgtk2.so This one I don't need, unless I want my application to integrate better in a Gtk-based desktop environment..? (guessing here) > tmp/usr/lib/qt5/plugins/printsupport/libcupsprintersupport.so I'll include this if I want CUPS printing support (I think I do). > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_debugger.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_inspector.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_local.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_native.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_profiler.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_server.so > tmp/usr/lib/qt5/plugins/qmltooling/libqmldbg_tcp.so I'm not using QML, so I won't need these? > tmp/usr/lib/qt5/plugins/sqldrivers/libqsqlite.so And not SQLite, so no need for this. > tmp/usr/lib/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so This one I think is important, but could someone confirm? So the ones I'm most unsure about are: plugins/generic/* plugins/platforminputcontexts plugins/xcbglintegrations But I'd really appreciate clarifications on the other ones as well. Elvis > > For some of these it's obvious from their name what they're for, but > others I have no idea. And I also don't know if they're integral to > the working of Qt, or if they're expendable (for example the generic/* > plugins) :/ > > Elvis > >> >>> _______________________________________________ >>> 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
