The automatic debuginfo generation done by rpmbuild fails hwhen some of the sourcefiles which it tries to package actually are symlinks, in this case it only packages the symlinks and not the files pointed too. For example donwload: http://home.zonnet.nl/jwrdegoede/gnucap-0.34-1.src.rpm (Fe package under review) And build it, then run rpmlint on the -debuginfo rpm and enjoy all the dangling symlinks errors.
Same here with rss-glx, see bug #188574.
For dealing with this problem, I always have to copy the real file of a symlink file and then remove all symlink file.
Should be fixed by Roland McGrath's new fancy find-debuginfo.sh in next rawhide push, feel free to reopen if not...