Hi All , when i am using gcj to compile a jar file that depends on another jar libraries like apache log4j i found undefined reference errors : : undefined reference to `org::apache::log4j::Logger* org::apache::log4j::Logger::getLogger(java::lang::Class*)' the command that i used is : gcj --classpath="lib/log4j-1.2.14.jar" --main=Loader.Main WebInterface.jar -o HH am i doing ant thing wrong , please advice ? Thanks Hegazy