[syslog-ng] configure installation path in a on-interactive installation

Hi there, is it possible to install syslog-ng PE to another path than the default /opt/syslog-ng and use this argument in a non-interactive installation. I tried to configure it by using the .run installer but no option is displayed to change the path. Any ideas or commentrs ??? With best regards / Mit freundlichen Grüßen Stefan Hoenig