Hi,
http://mirror.bytemark.co.uk/slackwa...lot.SlackBuild
I don't know whether this is right or not but it says:
#
# I think most people would rather not have a Qt dependency here.
# --enable-qt
#
In order for that to work you would need to add --with-qt=no to the configure arguments. Otherwise QT will be autodetected and compiled in which it is in Slackware 14.2 and I assume it is for current.
Personally I don't want a QT dependency in gnuplot.
Regards,
Matt