The build process for 3.x is controlled by batch files. Currently you can specifiy to build ooRexx and build the Windows install package in one step.
However, when building the install package, the process fails if the PDF doc files are not located in the proper place.
It would be convenient, when building the install package, to check that the docs are in the proper place. It would also be convenient to be able to specify a location to copy the docs from when building the install package.