I'm investigating the possiblity of creating PDF files from an embedded system, specifially an ARM9 using the IAR tools. Open-souce or licensing is fine - I'm finding it difficult to search for online, and I'm hoping someone here has used a package. C or C++ is preferred, we will be creating fairly simple reports with only a little text and graphics.
UPDATE: By searching SO, I did find PDFTron - anyone have any experience with it? Seems like it might do what we want.
!!!
(is this a webserver? Otherwise it seems like it would make more sense to spit out text files as reports and convert on a PC.)
No experience, but maybe libHaru ? Wikipedia has a list of PDF software.
Look at iText - I've used that before and it works well.
(It is Java-based, but you said "C or C++ is preferred", not required)
How large is the system you're targeting? If you can afford to run a Python interpreter and a copy of Inkscape (no X needed), there's a great toolchain available.
Last time I faced the kind of problem space you're in, I used Inkscape to render SVG to PDF in non-GUI mode, as follows:
inkscape --without-gui --export-pdf=foo.pdf foo.svg
...where the SVG is built using template substitution. (In doing this in the past, I used the Genshi template language for building the templates, which happens to interoperate wonderfully with Inkscape's GUI functionality -- Inkscape-the-GUI-SVG-editor doesn't remove tags in namespaces it doesn't recognize, so you can edit a SVG template in Inkscape even after marking it up to work as a Genshi template!)
My use case was automatic generation of cover pages for outgoing fax jobs; a complete set of scripts implementing this method for HylaFAX+ is available in the mailing list archive here.