[Buildroot] [PATCH] glibc: remove version 2.21

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Hello,

On Mon, 22 Feb 2016 09:25:05 -0300, Gustavo Zacarias wrote:

> > Is it SPARC entirely, or only some specific architecture variants of
> > SPARC that are no longer supported ?
> >

> Quick SPARC lesson.

Good, because I don't know anything about SPARC :)

> SPARC < V9 = 32 bits (AKA sparc arch).
> SPARC >= V9 = 64 bits and 32 bits as well (similar to x86, AKA sparc64 
> arch).

ACK.

> Now, you can use atomics for >= v9 and even on 32 bits, but normally 
> even if you use 32 bit userland you want a 64 bit kernel anyway (IIRC 
> solaris supports 32 bit kernel as well for old/transition versions, but 
> AFAIK linux never went there).

I don't really see why you're talking specifically about atomics here,
but OK with the rest.

> So basically yes, sparc = no glibc, sparc64 = yes glibc, because we 
> don't support multilib (in gentoo it wasn't 100% multilib in the past, 
> except that binutils/gcc did support -m64/-m32, but there wasn't libc 
> support, hence not really multilib).

I don't follow the relation with multilib support. Care to expand on
this?

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com