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nptl depends on uclibc

Buildroot Daniele Salvatore Albano - Lavoro 3 participants 3 messages Oct 6, 2010

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Daniele Salvatore Albano - Lavoro

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Hi,

i'm trying to setup a development system using ct-ng with eglibc but, while configuring stuff, i've seen that only linuxthreads and linuxthreads old are usable and not nptl.

Looking at configuration file i've seen that there is a depends on uclibc snapshot.

Is this correct? NPTL should be default, or, however, should be selectable when using eglibc and when using glibc.

Thank you,

Best Regards,
Daniele

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Daniele Salvatore Albano
Consulente Informatico
http://www.daccii.it

Servizi:
- Sviluppo di software di rete e standalone in C# e siti web PHP;
- Realizzazione di sistemi embedded con Buildroot;
- Realizzazione di CD di installazione di Ubuntu/Debian personalizzati;
- Installazione e Amministrazione sistemi basati su Debian, Ubuntu, CentOS e Fedora.
#1 lore raw
Quoted 10 lines · Daniele Salvatore Albano - Lavoro

?Hi,

i'm trying to setup a development system using ct-ng with eglibc but, while configuring stuff, i've seen that only linuxthreads and linuxthreads old are usable and not nptl.

Looking at configuration file i've seen that there is a depends on uclibc snapshot.

Is this correct? NPTL should be default,

default not yet. When uclibc releases with nptl then it can.

or, however, should be selectable

Quoted 1 line

when using eglibc and when using glibc.

thats a fair point.

Quoted 23 lines

Thank you,

Best Regards,
Daniele

--
Daniele Salvatore Albano
Consulente Informatico
http://www.daccii.it

Servizi:
- Sviluppo di software di rete e standalone in C# e siti web PHP;
- Realizzazione di sistemi embedded con Buildroot;
- Realizzazione di CD di installazione di Ubuntu/Debian personalizzati;
- Installazione e Amministrazione sistemi basati su Debian, Ubuntu, CentOS e Fedora.

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#2 lore raw
In reply to Daniele Salvatore Albano - Lavoro

Daniele, All,

Quoted 7 lines · On Wednesday 06 October 2010 22:31:28 Daniele Salvatore Albano - Lavoro wrote:

i'm trying to setup a development system using ct-ng with eglibc but, while configuring stuff, i've seen that only linuxthreads and linuxthreads old are usable and not nptl.
Looking at configuration file i've seen that there is a depends on uclibc snapshot.
Is this correct? NPTL should be default, or, however, should be selectable when using eglibc and when using glibc.

This is a known issue. There is currently no way to tell buildroot that an external toolchain is using NPTL.

There has been a discussion about in in the recent past, but I can't recall what was the outcome...

Basically, buildroot should not have to know what threading implementation is being used, as it has no partical user-visible impact. There are currently only two packages that have dependency on NPTL: openvpn and ltp. For others, you should be able to safely use an NPTL toolchain without telling buildroot.

I'll look into that during the WE, hopefully.

Regards,
Yann E. MORIN.

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