[Buildroot] [PATCH 2/2] toolchain: Add glibc support for ARCv2

[Alexey Brodkin <Alexey.Brodkin@synopsys.com>]

Hi Thomas, Arnout,

On Fri, 2017-09-15 at 01:14 +0300, Alexey Brodkin wrote:
> Finally there's working ARC port of glibc thanks to Vineet and Cuper!
> This port is based on pretty recent glibc's master branch and ARC
> changes are being reviewed now in glibc's mailing list.
> 
> Thus we again have to use sources from our GitHub but as soon as there's
> a glibc release with our patches applied we'll switch to unpstream releases
> and will drop our glibc GitHub repo alltogether.
> 
> Note now we cut tags in glibc repo simultaneously with tags
> in Binutils and GCC repos and so to make sure everything works in the best
> way we plan to update glibc tag together with Binutils and GCC.
> 
> Also note as of today ARCompact (AKA ARCv1 ISA) is not supported in glibc
> but we plan to fix it soonish so for now we make glibc intentionally
> dependent on archs38.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> Cc: Cupertino Miranda <cmiranda@synopsys.com>
> Cc: Vineet Gupta <vgupta@synopsys.com>
> Cc: Anton Kolesov <akolesov@synopsys.com>

This patch was sitting in patchwork for 2 weeks now.
If there're any complaints an suggestions why don't we merge it?

I'd like to see how we ramp-up with glibc toolchain for ARC.
That said once the patch is applied would be good to add
a corresponding config for autobuilder.

-Alexey