The 64-bit LispWorks 7.0 rpm requires
libpthread.so.0()(64bit) now. In LispWorks 6.1 and previous versions, it required
libpthread.so.0, which was wrong for Fedora and Red Hat Enterprise Linux-based distributions because those are the names of 32-bit components.
LispWorks Release Notes and Installation Guide - 2 Mar 2015