Re: [poky] Multiple glibc libraries on a single host #bitbake #poky

On Tue, 5 Aug 2025 at 10:57, Srivamsi Malladi via
lists.yoctoproject.org
<[email protected]> wrote:
> this is not feasible
>
> This is not feasible, because glibc is a special library and because the kernel and many other applications use it?

Glibc recipe is not designed for co-installing several versions, and
when you try to backport a newer version of something into an older
yocto you may find you also need to backport various other supporting
pieces and fixes. The whole thing is likely to unravel into basically
upgrading to a newer yocto.

> Or is it not feasible also in case of any other library or application?

It's possible for simpler items, but still not trivial. In general
it's best to pick one version and ensure everything is compatible. And
tell your management that staying with an outdated yocto means there
is a high risk of business requirements being difficult or impossible
to fulfil, and they need a lifecycle plan for migration.

> Like I said,  I would like to understand how to create recipes such that two versions of the same library/application are installed.

I'd suggest you start with something simpler than glibc.

Alex