After compiling with the option
draftmode set, how can I create a PDF without recompiling everything.
I was looking all around, but somehow the main concern seems to be to get rid of the auxiliary files, instead of reusing them.
The aux files do not contain any information about typesetting. They are generated TeX source files, and their main use is to record numbers used on later runs, such as cross references from
\label or the widths of
longtable columns etc.