Per
http://bugzilla.redhat.com/bugzilla/166344
it appears that there is no shared libpthread or libdl on x86_64. The
lack of these shared libraries is causing applications linking against
-lgc to fail with undefined symbols.
Can anyone confirm this (I don't have access to any x86_64 box)? Is
this on purpose or a (glibc) bug?
-- Rex