Libnl can use doxygen to build html API documentation. I'll attach a patch against the dev-libs/libnl-1.1-r2 ebuild that enables building and installing the documentation if the "doc" useflag is active. Please add this to ability to the tree!
Created attachment 239073 [details, diff] Patch to enable building API doc for libnl
Nice patch. Thanks. It's in -r2.