Filename of binary when using -u mode

Hi I have a question, hope anyone can help me :)

When using fontmake with a single ufo and expecting to have one compiled font, the filename of the font is the same of the ufo. But when building from design space every instance gets its filename as expected, based on the family and the style name.

Is not possible to have this with a single ufo?

Based on what I read on fontmake help, I assume this could be done using `--output-path` but I’m using fontmake inside shell script that doesn’t know anything of what is building, I’m trying to avoid any hardcoded names or paths.

Thanks in advance