Proceeded to build with the script you provided for make and got this in the end:
error: __gnuplot_get_var__: Can not make FIFO (Function not implemented)
make: *** [doc/interpreter/voronoi.eps] Error 1
make: *** [all-recursive] Error 1
make: *** [all] Error 2
That’s a bug related to macOS and GNUPLOT. If Qt configured ok the build should use the Qt for graphics.
Please run by “./run-octave —gui” and let us know what happens? ... gui or error?
octave: GUI features missing or disabled in this build
When the build started I noticed a similar warning as we got during configure earlier:
WARNING: Your installation of Qt version 5 appears incomplete or broken in some way. Fix that or use --with-qt=VER to use another version.
It went out of the screen pretty quick though. So this is all I can surely recall.