[yocto-ab] eglibc vs glibc

[Hart, Darren]

On Wed, 2013-12-11 at 21:09 +0000, Richard Purdie wrote:
> On Wed, 2013-12-11 at 11:59 -0500, William Mills wrote:
> >  From Linaro I understand that eglibc is nearing its last release.
> > Linaro is planning the transition from eglibc to glibc.
> > They are asking what gaps remain in glibc that are important to eglibc 
> > users.
> > We realize that embedded is the most likely where any gaps exist.
> > Linaro toolchain builds eglibc but they turn on all the options so they 
> > do not have a lot of experience on scaling down.
> > 
> > Has oe-core already done or planned the transition to glibc?
> 
> It has not done it and the transition is not planned as yet.
> 
> > Have we identified any gaps?
> 
> The biggest issue is the lack of config options to cut down the size of
> eglibc.
> 
> > Has any one tried yp-tiny with glibc?
> 
> No, it won't work due to the issue above.

An open work item here is to complete research into the limitations of
uclibc to determine if the granular componentization of eglibc is really
needed, or if uclibc might be a more appropriate option for poky-tiny.

Alternatively, given the complexity of working with the eglibc config
options and integrating it into a product, another option would be to
only make the division at individual libraries and use uclibc when truly
tiny is required.

Ultimately, I think this alternative is where we will land. Especially
if the resources can't be scratched together to do the port ourselves.

My 0.02, for whatever it's worth.

--
Darren

> 
> > Linaro toolchain group is asking if there are any gaps that need to be 
> > closed.
> > I don't know enough to guide them.
> 
> The discussion was taken upstream:
> 
> http://www.eglibc.org/archives/patches/msg01276.html
> 
> but they've said no unless someone steps up to do the work. We're kind
> of in stalemate at the moment as I understand it. Khem or Mark may know
> more about the current status but I don't think much as changed since
> those emails.
> 
> Cheers,
> 
> Richard
> 
> 
> 
> 

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel