Gentoo's Bugzilla –
Attachment 482674 Details for
Bug 624364net-p2p/bitcoinxt-qt-0.11.0d : /.../ld: qt/qt_bitcoin_qt-bitcoin.o: relocation R_X86_64_32 against symbol `_ZN11BitcoinCore16staticMetaObjectE' can not be used when making a shared object; recompile with -fPIC