Lua / Tikz / pgf works for pdflatex only ?

[Daniel J S. <dan...@ie...>]

Does anyone familiar with Tikz/pgf know why the output from pdflatex 
terminal or "lua tikz" terminal should not work with the normal "latex" 
command line processing as opposed to requiring "pdflatex"?

https://sourceforge.net/p/gnuplot/bugs/1822/

If there is a good reason, should we put in the output LaTeX/TeX code 
some type of error message that complains when compiled without pdflatex?

Dan