When using ANT_ARGS="-lib $LOG4J -Dwork.dir=somepath -listener org.apache.tools.ant.listener.Log4jListener"
where $LOG4J points to a directory containing log4j.jar, with a log4j.properties including: log4j.appender.LogFile.file=${work.dir}/build.log On Windows ${work.dir} in log4j.properties resolves to the value passed in ANT_ARGS, but on Linux it resovles to the empty string, resulting in trying to write the log file into the root, which of course fails. This is using the exact same binaries of ANT and log4j in both environments. Any ideas what could cause this?