http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49380
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-12 13:48:04 UTC --- undefined reference to `Amarok::aboutData' suggests a bug in Amarok instead. Please provide pre-processed source of the file with the undefined reference and the file which is supposedly defining Amarok::aboutData.