I will be able to generate such a pdf in a few days, right now I am on vacation, with a very slow internet connection and no way to download latex packages

If anyone reading this topic uses Debian/Ubuntu or friends, this should be easy to do:
- Install doxygen texlive-latex-base texlive-latex-extra texlive-latex-recommended
- Clone the git repository of the doc:
https://github.com/christopho/solarus-doc- Go to the "en" directory
- In the "Doxyfile" file, set GENERATE_LATEX to YES and USE_PDFLATEX to YES
- Generate the doc by typing: doxygen Doxyfile
- A directory 1.5/latex was just created. Go into this directory and type make.
You should now have the nice pdf.