These are the targets supported by this ANT build scpript: build - compile all project files, if a certain library is missing, then the compilation of its dependents are skipped. regression - Run regression tests which check large parts of log4j. runAll - run all available tests Specify the log4j.jar property to test an arbitrary jar, otherwise the parent log4j will be built and tested. clover.jar must be in the classpath and should also be placed in the lib directory. A version of clover (http://www.cenqua.com/clover) for use with ASF projects is available from the committers/donated-licenses/clover module in the SVN repository. Specify files to reformat with -Djalopy.files=PATTERN.