Hello Patrick,
Okay thank you very much! The problem was as you explained.
First, did you compile D-Bus support? If you do, then running
syncevolution under gdb will not get you into the actual code, because
the operations all run inside the syncevo-dbus-server. Run with
"--daemon=no" to debug in this case. libsoup is needed for the
syncevo-dbus-server.
I did compile with --enable-gui so D-Bus was included, too. But there is no
libsoup package in Slackware and under these circumstances synchronization
with libcurl seems not to work also. I compiled SyncEvolution again without
GUI and D-Bus and then synchonizing with libcurl was working without a
problem. So the error message was a bit missleading for me.
I have compiled libsoup and glib-networking for Slackware and with these it
does also work when D-Bus and GUI is enabled.
--
take care!
xo,klaus