The of-stk project is a bit unusual as octave packages go, since it is intended to be usable directly on Matlab too. I have encountered and addressed some of these problems before.
I have now brought the changes I made to the original octave-packages build for stk into the of-stk project. But I don’t think they do what we need – there is a Makefile in the project directory which looks like it makes packages, but it relies upon octave being in the path, which isn’t the case in this context. I have taken the instructions generated by the makefile and put them into the of-stk build script.
Fixed in build 21.