bullet has nice API documentation, that can be generated by Doxygen That can be done with: sed -i 's/GENERATE_HTMLHELP.*//g' Doxyfile # that is strange thing. Found that in archlinux's https://projects.archlinux.org/svntogit/community.git/tree/bullet/trunk/PKGBUILD#n42 doxygen Doxyfile then just copy "html" directory to approporiate place in /usr/share/doc You can add additional use-flag (e.g. api-docs) or put that in doc flag. Thanks in advance
+ 27 Jun 2012; Sebastien Fabbro <fabbros@gentoo.org> bullet-2.80.ebuild: + html docs are built with doxygen if doc flag is set, bug #421827, thanks + Vitaly +