Package inn-devel provides development libraries without the corresponding header files. package inn-devel-2.2.1-1.i386.rpm of the Lorax (6.1beta) provides libinn.h dbz.h configdata.h and clibrary.h. But for example libinn.h includes storage.h, which is missing. The following header files are needed: autoconfig.h config.h innconf.h macros.h mymemory.h nntp.h qio.h clibrary.h configdata.h inndcomm.h md5.h myserver.h patchlevel.h storage.h conffile.h dbz.h libinn.h mydir.h mystring.h paths.h uio.h
Should be fixed in inn-2.2.2-2, which will be in the next rawhide release.