Gentoo's Bugzilla –
Attachment 338248 Details for
Bug 456042[kde overlay] media-gfx/digikam-3.0.0_rc - ld: warning: libmarblewidget.so.14, needed by /usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/../../../../lib64/libkgeomap.so, not found (try using -rpath or -rpath-link)