Build DITA Open Toolkit Documentation ${dita.home}/lib/dost.jar not found. Does ${dita.home} contain a working DITA-OT installation? Set the $DITA_HOME environment variable or the dita.home Ant property to point to a working DITA-OT installation: Either: $ export DITA_HOME=/path/to/dita-ot $ ant ... Or: $ ant -Ddita.home=/path/to/dita-ot