gnuplot completely removed support for the gnugraph and unixplot terminal
drivers in 2011. From the one of the ChangeLog files:
> 2011-05-31 Ethan A Merritt <merritt@u.washington.edu>
> [...]
> Remove obsolete terminal drivers gnugraph and unixplot. The underlying
> gnu plotutils library is itself more than 10 years out of date (last
> release July 2000) and the terminal drivers haven't been upgraded for
> longer than that. In any event, current gnuplot has better native
> terminal drivers for the devices supported by unixplot/gnugraph.
In practice, this means the PLOT option is a no-op and the dependency on
graphics/plotutils is unnecessary. Indeed, if one looks at the port's build
logs in the cluster the following can be seen:
configure: WARNING: unrecognized options: --without-lisp-files, --with-plot,
--disable-thin-splines, --with-wx-config
PR: 205488
Approved by: glewis (maintainer)
1a698db6ec