I need to port some of my stuff to NPTL and I'm trying to confirm what I
have been reading on the web.  Although the following read like statements,
they are really questions.

(1) SL3x supports nptl:  nptl was back-ported into the 2.4 kernels.  glibc
is still LinuxThreads.  You need to link with the nptl libraries from
nptl-devel.

(2) SL4x supports nptl natively:  2.6 kernels support nptl.  No back-port
needed.  glibc's pthreads is nptl as in the nptl-devel rpm.  No need to link
with nptl-devel libraries.

Thanks!