On quinta-feira, 1 de agosto de 2013 12:16:37, Fricot, Daniel wrote: > 1. Why is it kept in the sources but is never included in the Windows > binaries? (I know it was originally Linux-only, but wouldn't it be great if > - just as most of the Qt stuff - it was cross-platform out of the box? > Surely, I'm not the only one asking this.)
Purely historical reasons. Our build machines don't have a dbus/dbus.h header anywhere, so configure skips it and turns off the QtDBus module. > 2. Is it stable? (I've heard other people claiming it isn't stable on > Windows and should not be used) Like Shane said, it's unknown, since we don't test it. The QtDBus code itself is entirely cross-platform. If it's stable on Linux, it should be stable everywhere. The problem is the libdbus-1 code. It has at least one special code path on Windows, which is the use of TCP sockets instead of Unix sockets. Also, since it uses pthreads on Unix, it's possible the mutex and condition variable implementation for Windows could be bad. You'll have to test. Once we get rid of the libdbus-1 dependency (by Qt 5.3 or 5.4), this will not be a problem. > 3. Can I build QtDBus for Windows as a Qt plugin or module of some > sort that can hook into the Windows binaries or do I have to build the > entire Qt like I did now? (The Qt binaries you can download are great as > you don't need to build the framework yourself. Building it yourself > requires Qt, VC2012, nmake, cmake, Ruby, Perl, Python, DBus, CVS, GIT, > Expat, ICU and a lot of time. This increases the risk of errors in our > toolchain.) The module is pretty much self-contained. So all you need to do is get the qtbase sources, configure with the same build options as your other binaries and do a "make sub-dbus". That will build moc and QtCore, but you can discard them afterwards. You may try, but I provide no guarantee for, skipping the configuration step and simply going to src/dbus, typing qmake && make there. > 4. What are the best alternatives? Maybe take a look at Qt Publish & Subscribe, which unfortunately is not available in Qt 5. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center
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