A set of patches at http://people.redhat.com/caolanm/gcj/ attempt to enable gcj as java replacement for OOo build in 1.9.61 (cvs co -rSRC680_m61 OpenOffice.org and apply patches). They don’t work of course, but they nearly do. Most useful to get working is xmlhelp which nearly works, but whose hackaround currently apparently makes it go and blow up in helpcontent2.