Paths for basis and URE are different on linux - thus build.xml needs to be adapted in order to be able to build on linux.
Attached patch accounts for that. Alternatively, you could hardcode
(* since the basis directory is versioned, but as the typical user only has one version of OOo installed...)
Although then you'd still need the application home dir for the uno-deploy target (or you hardcode /opt/openoffice.org3 for that)