I meant "make feature animated films". During the late 80's, before more 'sophisticated'; build tools polluted developer's young brains, early visual effects we

I meant "make feature animated films". During the late 80's, before more 'sophisticated'; build tools polluted developer's young brains, early visual effects were "nothing more" than complex Makefiles triggering renders and composites. All one needed was a facility that looked at the date stamp of two files, and if one was older that meant these series of command lines is executed. Beyond very basic #define style macro substitution, that was all that was used to create many feature film effects, as well as nearly ever single early 3D animated renderer produced animation before 1992.