Hi Benoît! Output from ldd $(which rtorrent)
linux-vdso.so.1 => (0x00007fff54fe5000) libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007f0fccb28000) libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f0fcc8ff000) libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0x00007f0fcc6f9000) libcurl.so.4 => /usr/lib/x86_64-linux-gnu/libcurl.so.4 (0x00007f0fcc48e000) libtorrent.so.14 => /usr/local/lib/libtorrent.so.14 (0x00007f0fcc1b2000) libxmlrpc_server.so.3 => /usr/local/lib/libxmlrpc_server.so.3 (0x00007f0fcbfab000) libxmlrpc.so.3 => /usr/local/lib/libxmlrpc.so.3 (0x00007f0fcbd94000) libxmlrpc_util.so.3 => /usr/local/lib/libxmlrpc_util.so.3 (0x00007f0fcbb90000) libxmlrpc_xmlparse.so.3 => /usr/local/lib/libxmlrpc_xmlparse.so.3 (0x00007f0fcb983000) libxmlrpc_xmltok.so.3 => /usr/local/lib/libxmlrpc_xmltok.so.3 (0x00007f0fcb767000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f0fcb460000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f0fcb1dd000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f0fcafc7000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0fcadab000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0fcaa23000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f0fca81f000) libidn.so.11 => /usr/lib/x86_64-linux-gnu/libidn.so.11 (0x00007f0fca5eb000) libssh2.so.1 => /usr/lib/x86_64-linux-gnu/libssh2.so.1 (0x00007f0fca3c1000) liblber-2.4.so.2 => /usr/lib/x86_64-linux-gnu/liblber-2.4.so.2 (0x00007f0fca1b2000) libldap_r-2.4.so.2 => /usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2 (0x00007f0fc9f62000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f0fc9d59000) libgssapi_krb5.so.2 => /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x00007f0fc9b1a000) libssl.so.1.0.0 => /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0 (0x00007f0fc98c8000) libcrypto.so.1.0.0 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f0fc9501000) librtmp.so.0 => /usr/lib/x86_64-linux-gnu/librtmp.so.0 (0x00007f0fc92e7000) libz.so.1 => /usr/lib/libz.so.1 (0x00007f0fc90d0000) libgnutls.so.26 => /usr/lib/x86_64-linux-gnu/libgnutls.so.26 (0x00007f0fc8e0f000) /lib64/ld-linux-x86-64.so.2 (0x00007f0fccd62000) libgcrypt.so.11 => /lib/x86_64-linux-gnu/libgcrypt.so.11 (0x00007f0fc8b91000) libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f0fc897a000) libsasl2.so.2 => /usr/lib/libsasl2.so.2 (0x00007f0fc8761000) libkrb5.so.3 => /usr/lib/x86_64-linux-gnu/libkrb5.so.3 (0x00007f0fc848d000) libk5crypto.so.3 => /usr/lib/x86_64-linux-gnu/libk5crypto.so.3 (0x00007f0fc8263000) libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x00007f0fc805f000) libkrb5support.so.0 => /usr/lib/x86_64-linux-gnu/libkrb5support.so.0 (0x00007f0fc7e56000) libkeyutils.so.1 => /lib/libkeyutils.so.1 (0x00007f0fc7c53000) libtasn1.so.3 => /usr/lib/x86_64-linux-gnu/libtasn1.so.3 (0x00007f0fc7a42000) libp11-kit.so.0 => /usr/lib/x86_64-linux-gnu/libp11-kit.so.0 (0x00007f0fc782f000) libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f0fc762c000) As you can see it points to /usr/local/lib/libtorrent.so.14 which point to /usr/local/lib/libtorrent.so.14.0.1 in the same directory. I have /usr/lib/x86_64-linux-gnu/libtorrent.so.14 and it's pointing to /usr/lib/x86_64-linux-gnu/libtorrent.so.14.0.4 but for an unknown reason it's not linked correctly. Any idea on how to fix this? Many thanks Max On Mon, Jun 25, 2012 at 11:38 PM, Benoît Knecht <benoit.kne...@fsfe.org>wrote: > Hi Max, > > Max Power wrote: > > After uprading from rtorrent 0.8.9 (previous unstable version) > > rtorrent is not able to start again with the error message: > > > > rtorrent: symbol lookup error: rtorrent: undefined symbol: > _ZN7torrent11thread_base8m_globalE > > > > I have no clue what this means or what I could do against it. > > Can you please post the output of > > ldd $(which rtorrent) > > and see if it lists libtorrent.so.14? It should point to > /usr/lib/x86_64-linux-gnu/libtorrent.so.14, so can you check if it > exists on your system and links to libtorrent.so.14.0.4 in the same > directory (and that the latter is readable)? > > Also, do you have multiarch-support installed? > > Cheers, > > -- > Benoît Knecht >