Is there any configuration or package, which can make Org-mode checks the modified time of all #+RESULTS
' files before export
(maybe auto add a #+MODTIME
for comparing I guess), then decide if a code block needed to be re-evaluate?
An Org file with a lot of gnuplot
code blocks makes exporting very, very time-consuming...
:cache yes
header argument to avoid needlessly repeating expensive computations. (Let me know if I should convert this into an answer.)