How to setup and use the GJ Compiler

(Also applicable to Pizza with JDK 1.2)

Due to a change in the JDK between versions 1.1 and 1.2 it is not as simple to get GJ or Pizza to work with 1.2. In 1.1 the JDK appended its home to the CLASSPATH environment variable. In 1.2 the JDK home is prepended. This means that some of the classes redefined for GJ will not be found(it will find the default ones first) by the JDK unless the the -classpath flag is used explicitly on the command line. This leaves a nasty alias required to set up GJ (and Pizza for 1.2).

alias gjc="java -ms12m -classpath /home/java/extensions/gj/classes:$CLASSPATH gjc.Main"

An analogous alias needs to be constructed for Pizza if you are trying to use that with Java 1.2.