Variables to consider defining: aspectjrt.path path to release version of runtime test.classpath use "jar.classpath" or "bin.classpath" (default is bin if available) Both require module tests be built with the modules. bin.classpath: use eclipse bin/ directories jar.classpath: use build.xml jar files: cd build ant clean ant -Dtrim.testing.default=false build-testing-jars java13.path: path to jdk 1.3 java.exe command for ajc tests java14.path: path to jdk 1.4 java.exe command for ajc tests