Hi Adam, really the only important flag to build Classpath for x86 rather than x86-64 on an x86-64 system is -m32 as a compiler flag. The default x86-64 config file for the Jikes RVM does this by defining CC and CPLUS to have -m32 at the end. Alternatively compiler flags can be specified with the environment variables CFLAGS and CXXFLAGS. I have been trying to capture information on building the Jikes RVM in the wiki: http://jikesrvm.sourceforge.net/wiki/index.php/Building I would welcome help and contributions. Thanks, Ian Rogers
