/opt/x11-sgminer/sgminer: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.15' not found (required by /opt/x11-sgminer/sgminer) /opt/x11-sgminer/sgminer: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by /opt/x11-sgminer/sgminer)