Slackware 10.2 make use of NPTL

Kocil · 09-24-2005, 08:05 AM

Hi Slackers.

Pat especially mentioned NPTL among the new feature of Slack 10.2.
So ... how do we make use of it ?

- Must we install the kernel-generic 2.6.13 ?
- What built-in program is actually use it ?
- How to compile new programs to benefit from it ?

TIA.

Alien Bob · 09-24-2005, 08:37 AM

Quote:

Originally posted by Kocil
Hi Slackers.

Pat especially mentioned NPTL among the new feature of Slack 10.2.
So ... how do we make use of it ?

- Must we install the kernel-generic 2.6.13 ?
- What built-in program is actually use it ?
- How to compile new programs to benefit from it ?

TIA.

You should read the Fri May 13 12:51:03 PDT 2005 entry in the Slackware ChangeLog.txt for more insight on NPTL.

It boils down to:

You need a 2.6 kernel in Slackware

Any program (even when initially linked against linuxthreads libraries) will be using the NPTL enabled libraries at run-time, provided you are running an NPTL-enabled kernel

You will explicitly need to disable NPTL for binaries that refuse to run when linking to the NPTL libs by setting the LD_ASSUME_KERNEL environment variable to a value of 2.4.31 for instance (for that particular program only of course!).

Eric

Kocil · 09-25-2005, 12:21 PM

Thanks Eric. Thats easy

However, what is it mean ?

http://slackware.cs.utah.edu/slackwa...eaders.WARNING

Quote:

Note -- if you compile with NPTL then you might want to use these headers,
and glibc's NPTL was compiled using 2.6 headers, so all should be well.
In that case, specify using NPTL libs and headers with these compile
options:

-I/usr/include/nptl -L/usr/lib/nptl

TIA