> requires the PDF conversion to use PDF/X-1a:2001.
> Is there a way to accomplish this with texi2pdf?
Not that I know of. Certainly there is no pdf/x-specific stuff in
texinfo.tex.
I don't know if there is a way to post-process a PDF as created by
texinfo.tex into being PDF-X, but that's what I would suggest looking
into, instead of anything at the Texinfo or TeX levels.
<https://www.tug.org/pipermail/pdftex/2009-June/008047.html>
The pdfx package is for LaTeX. Not usable with Texinfo.
karl
