Linux libthread_db library.

[Mark Kettenis]

   Date: Thu, 22 Jun 2000 11:31:37 -0700 (PDT)
   From: Kaz Kylheku <kaz@ashi.footprints.net>

   I'm not planning to make any changes. When was this support introduced
   in gdb? RedHat 6.2 shipped glibc-2.1.3, but the gdb binary is not linked
   (at least not dynamically) to the new thread debugging library. 
   So that's why I was wondering; I should really be doing some RTFM
   through the gdb archives instead of spamming the mailing list. :)

GDB 5.0, libthread_db is dlopen()-ed.

By the way, the libthread_db in glibc-2.1.3 is somewhat broken on
Linux/x86, and thread support in GDB 5.0 is still somewhat flaky.
I've fixed glibc 2.2.  I have a patch that makes GDB more robust, but
this patch is still being reviewed.

Mark