make org in separate directory

mkdir build & cd build & ../configure & make generates the following error

Wrote /work/lxu/spot/doc/userdoc/install.html
Publishing file /work/lxu/spot/doc/org/tut51.org using `org-html-publish-to-html'
executing Plantuml code block...
Could not find plantuml.jar at ./plantuml.jar
Makefile:1552: recipe for target 'org' failed
make[4]: *** [org] Error 255

plantuml.jar is located in build/doc/org