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: tmp/usr/lib/qt5/plugins/bearer/libqconnmanbearer.so tmp/usr/lib/qt5/plugins/bearer/libqgenericbearer.so tmp/usr/lib/qt5/plugins/bearer/libqnmbearer.so 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 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 tmp/usr/lib/qt5/plugins/iconengines/libqsvgicon.so 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 tmp/usr/lib/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so tmp/usr/lib/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so 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 tmp/usr/lib/qt5/plugins/platformthemes/libqgtk2.so tmp/usr/lib/qt5/plugins/printsupport/libcupsprintersupport.so 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 tmp/usr/lib/qt5/plugins/sqldrivers/libqsqlite.so tmp/usr/lib/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so 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
