[KDbg-l] can not find sources

[<pet...@bs...>]

Hi,
I am just starting with kdbg on a Linux 10.0 PC.
I made a new project with Kdevelop. The files of this project are organized
by kdevelop in /src and /bin and so.
When I start kdbg the sources are not found. I can open it but the
breakpoints that I set are not valid for any reason. kdbg seems not to link
the sources to the app.
I tried a simple project with all files in one directory. Now kdbg finds
and opens the main.cpp automatically as it should be. And I can debug the
app.
How can I tell kdbg where to find the sources?
It sounds simple like one missing path setting. But I can not find where to
set it.

Peter