D-Bus session bus

[Kevin Krammer]

Hi Ralf,

On Thursday, 2010-08-26, Ral Habacker wrote:
> Kevin Krammer schrieb:
> > Hi folks,
> > 
> > I had some difficulties today getting the D-Bus session bus setup right.
> > 
> > The base situation is like this:
> > 
> > KDE is built into C:\KDE\trunk using emerge
> > I am working on a "BitRock Install Builder" based installer for an
> > application which uses Akonadi.
> > The installer puts Akonadi, the application and some Akonadi resources
> > into a subdirectory in c:\Program Files.
> > 
> > When I run the application, it starts D-Bus and Akonadi (good), Akonadi
> > starts the agents (it also finds the ones in C:\KDE\trunk\bin, but still
> > ok).
> > 
> > However, each of those started from %KDEROOT% starts its own D-Bus and
> > its own Akonadi!
> > 
> > Andreas hinted that I could try changing the D-Bus config to use tcp
> > instead of autolaunch [1].
> > Doing that made the app start D-Bus but fail to detect that (dbus-daemon
> > was shown running in the process monitor, but the app complained about
> > it not finding the session bus).
> > 
> > I now got it working by commenting the patch apply setion in
> > emerge/portage/win32libs-sources/dbus-src/dbus-src-1.3.1.py and using
> > D-Bus config tcp with host and port.
> 
> The related patch extends the autolaunch feature with an installation
> directory limited session bus.
> This feature is required for multiple kde installations. It is enabled
> by using the session bus address "autolaunch:scope=install-path"

Right.
Maybe install path is just the wrong criteria, maybe something like "KDE 
Version"?

> > Since hardcoding a port is quite likely a bad idea, any suggestions what
> > I could try instead?
> 
> in
> http://websvn.kde.org/trunk/kdesupport/emerge/portage/win32libs-sources/dbu
> s-src/dbus-src-1.3.1.py?view=log there is a line
> self.subinfo.options.configure.defines = "-DDBUS_ENABLE_XML_DOCS=OFF
> -DDBUS_USE_EXPAT=ON
> -DDBUS_SESSION_BUS_DEFAULT_ADDRESS:STRING=autolaunch:scope=install-path"
> 
> change it to
> 
> self.subinfo.options.configure.defines = "-DDBUS_ENABLE_XML_DOCS=OFF
> -DDBUS_USE_EXPAT=ON -DDBUS_SESSION_BUS_DEFAULT_ADDRESS:STRING=autolaunch"
> 
> and recompile dbus-src.
> I guess we need a dbus client config file to be able to set this without
> using an environment variable.

I did that and rebuilt  dbus-src like this

emerge -i dbus-src

But now the application doesn't start D-Bus anymore.
When I run it (from console or by double-clicking in Explorer), it complains 
about no session bus being found (like in my first attempt to fix this from 
above) but dbus-daemon.exe is really not running this time.

Do I need to rebuild something else as well?

Cheers,
Kevin

-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring
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