LibreOffice's export to PDF has this option
File->Export as PDF->PDF/A-1a
If you change the preferences in the UI, I am not sure whether it will
kicked in with command line export.
I will be interested in knowing what you find with the above option.
ps: You can export to PDF via OpenDocument/ODT export. See or search
for `org-odt-preferred-document-format' or
`org-e-odt-preferred-document-format' in the manual/mailing list.
> Greetings. The woman that runs our research group complains that she is
> unable to print PDF documents that a couple of us in the group send her, and
> that the two of us are the only source of such troublesome documents.
>
> It occurred to me that the two of us are the only ones in the group that use
> Emacs Org-mode to produce PDF documents.
>
> I know there are web sites that can validate (i.e., measure conformance to the
> standard of) HTML documents. I wondered if there might be something similar
> for PDF documents.
>
> I found the following site:
>
> http://www.validatepdfa.com/
>
> I don't much about the PDF standard, and I don't know anything about the
> reliability of this site, but I've found that PDF documents that I generate
> using Org-mode and send to that site come back with a boatload of validation
> errors.
>
> I've appended a sample Org-mode file that generates errors when I try to
> validate it. I've appended details of my configuration below the sample file.
>
> I should mention that I have no trouble viewing the PDF file (using "evince"
> on my Fedora system) or printing this file (to a Brother b/w printer). Ditto
> for
> my colleague on a MacOS X system. Hence, I personally have no reason to
> complain. But there's that nagging issue with the boss.
>
> Can anybody comment as to what I should expect in the way of validation?
> And/or are there any settings that would affect this behavior? I.e.,
> something like:
>
> (setq org-export-pdf-use-strict t)
>
> Thanks.
>
> -- Mike
>
> ###### Beginning of sample Org-mode file
>
> #+PROPERTY: session *R*
> #+PROPERTY: cache yes
>
> #+PROPERTY: results output verbatim
> #+PROPERTY: tangle yes
>
>
>
> * This is a test
>
>
> #+BEGIN_SRC R :exports both
>
> x <- 7.2
> y <- 3
>
> print(x * y)
>
>
> #+END_SRC
>
>
> #+RESULTS:
> : 21.6
> ###### End of sample Org-mode file
>
> Emacs : GNU Emacs 24.1.1 (x86_64-redhat-linux-gnu, GTK+ Version 2.24.13)
> of 2012-11-17 on buildvm-30.phx2.fedoraproject.org
> Package: Org-mode version 7.9.2 (release_7.9.2-656-g2f9dda @
> /usr/local/emacs.d/org-mode/org-devel/org-mode/lisp/)
>
> current state:
> ==============
> (setq
> org-export-preprocess-before-selecting-backend-code-hook
> '(org-beamer-select-beamer-code)
> org-tab-first-hook '(org-hide-block-toggle-maybe
> org-src-native-tab-command-maybe
> org-babel-hide-result-toggle-maybe
> org-babel-header-arg-expand)
> org-speed-command-hook '(org-speed-command-default-hook
> org-babel-speed-command-hook)
> org-export-html-after-blockquotes-hook
> '(org-special-blocks-convert-html-special-cookies)
> org-occur-hook '(org-first-headline-recenter)
> org-metaup-hook '(org-babel-load-in-session-maybe)
> org-export-preprocess-before-normalizing-links-hook
> '(org-remove-file-link-modifiers)
> org-confirm-shell-link-function 'yes-or-no-p
> org-export-latex-after-blockquotes-hook
> '(org-special-blocks-convert-latex-special-cookies)
> org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
> org-beamer-auto-fragile-frames
> org-beamer-place-default-actions-for-lists)
> org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
> org-after-todo-state-change-hook '(org-clock-out-if-current)
> org-from-is-user-regexp "\\<Michael Hannon\\>"
> org-src-mode-hook '(org-src-babel-configure-edit-buffer
> org-src-mode-configure-edit-buffer)
> org-agenda-before-write-hook '(org-agenda-add-entry-text)
> org-babel-pre-tangle-hook '(save-buffer)
> org-mode-hook '(#[nil "\300\301\302\303\304$\207"
> [org-add-hook change-major-mode-hook org-show-block-all
> append local]
> 5]
> #[nil "\300\301\302\303\304$\207"
> [org-add-hook change-major-mode-hook
> org-babel-show-result-all append local]
> 5]
> org-babel-result-hide-spec org-babel-hide-all-hashes)
> org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
> org-babel-execute-safely-maybe)
> org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
> org-cycle-hide-inline-tasks org-cycle-show-empty-lines
> org-optimize-window-after-visibility-change)
> org-export-latex-format-toc-function 'org-export-latex-format-toc-default
> org-export-first-hook '(org-beamer-initialize-open-trackers)
> org-babel-tangle-lang-exts '(("C++" . "cpp") ("latex" . "tex")
> ("python" . "py") ("lisp" . "lisp")
> ("emacs-lisp" . "el"))
> org-confirm-elisp-link-function 'yes-or-no-p
> org-metadown-hook '(org-babel-pop-to-session-maybe)
> org-structure-template-alist '(("r" "#+begin_src R\n\n#+end_src"
> "<src lang=\"R\">\n\n</src>")
> ("S" "#+BEGIN_SRC ?\n\n#+END_SRC"
> "<src lang=\"?\">\n\n</src>")
> ("s" "#+BEGIN_SRC ?\n\n#+END_SRC"
> "<src lang=\"?\">\n\n</src>")
> ("e" "#+BEGIN_EXAMPLE\n?\n#+END_EXAMPLE"
> "<example>\n?\n</example>")
> ("q" "#+BEGIN_QUOTE\n?\n#+END_QUOTE"
> "<quote>\n?\n</quote>")
> ("v" "#+BEGIN_VERSE\n?\n#+END_VERSE"
> "<verse>\n?\n</verse>")
> ("c" "#+BEGIN_CENTER\n?\n#+END_CENTER"
> "<center>\n?\n</center>")
> ("l" "#+BEGIN_LaTeX\n?\n#+END_LaTeX"
> "<literal style=\"latex\">\n?\n</literal>")
> ("L" "#+LaTeX: "
> "<literal style=\"latex\">?</literal>")
> ("h" "#+BEGIN_HTML\n?\n#+END_HTML"
> "<literal style=\"html\">\n?\n</literal>")
> ("H" "#+HTML: "
> "<literal style=\"html\">?</literal>")
> ("a" "#+BEGIN_ASCII\n?\n#+END_ASCII")
> ("A" "#+ASCII: ")
> ("i" "#+INDEX: ?" "#+INDEX: ?")
> ("I" "#+INCLUDE: %file ?"
> "<include file=%file markup=\"?\">")
> )
> org-babel-load-languages '((emacs-lisp . t) (lisp . t) (gnuplot . t) (R . t)
> (dot . t) (python . t) (sh . t) (latex . t)
> (C . t) (octave \.t))
> org-agenda-files '("~/Documents/scratch.org")
> org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
> org-confirm-babel-evaluate 'my-org-confirm-babel-evaluate
> org-export-preprocess-after-blockquote-hook
> '(org-special-blocks-make-special-cookies)
> org-src-fontify-natively t
> )
>
>
--
