Does log4cxx substitute environment variables in config files?

[RUOFF, LARS (LARS)]

Hi,
I heard that Log4J substitutes environment variables in log configuration 
files, that is, it is able to handle declarations like
<appender name="TRACES_FILE" class="FileAppender">
  <param name="file" value="${LOG_DIR}/traces.log"/>
...
(substituting the value for environment variable LOG_DIR)

Can log4cxx do this too?
Especially interested in v0.9.7, as I'm forced to use that version.
I don't see it in the documentation and code for now.

Kind Regards,
Lars R.