$ g++ test.cpp -l:bitcoind -L.
/usr/bin/ld: ./bitcoind: _ZSt4cout: invalid version 6 (max 0)
/usr/bin/ld: ./bitcoind: error adding symbols: bad value
collect2: error: ld returned 1 exit status

$ nm -CD bitcoind | grep cout
00000000013bed00 B std::cout