I need very simple thing. I need to put any logs from file appender to the file in application directory, where jar is located. (this is Java desktop application). If I define it explicitly it works:

but this does not work

<file>logname.log</file>

I know I can pass some variable to java interpreter and use it as ${LOGHOME} and then use it like

<file>${LOGHOME}/logname.log</file>

but it is really needed? Thanks, Martin