Profiling a Ant build by logging with Log4J

You would think it's an easy task to profile your build, but Ant authors simply neglected this feature.
In order to timestamp each step, do this way:

1) create a log4j.properties file and put it in the classpath:

# Set root category priority to INFO and its only appender to CONSOLE.
log4j.rootCategory=DEBUG, CONSOLE
#log4j.rootCategory=DEBUG, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.tools.ant=DEBUG, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=DEBUG
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=- %m%n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.Threshold=DEBUG
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

2) add to the classpath the log4j.jar file

3) run:
set ANT_OPTS=-Dlog4j.debug -Dlog4j.configuration=file:./log4j.properties
ant -listener org.apache.tools.ant.listener.Log4jListener -verbose -buildfile mybuild.xml build


Terrible, eh?