[OE-core] meta-toolchain / /bin/sh requirement / ldconfig backfill

[Andre McCurdy]

On Mon, Sep 18, 2017 at 12:30 PM, Mark Hatle <mark.hatle at windriver.com> wrote:
>
> Because of this, there is no way (with a default configuration) to build
> meta-toolchain....
>
> Investigating further, ldconfig support moved from "USE_LDCONFIG" to a
> distribution configuration.  It does this via the "DISTRO_FEATURES_BACKFILL"
> (introduced in commit: a905df2dd8f43a2febffa64a39b6e508510326a0)

The intention of that commit was only to change the way support for
running ldconfig on the target is controlled (ie changed from an
ad-hoc bitbake variable to a distro config option). It's enabled by
default now, but it was enabled by default before that commit as well.

Did meta-toolchain work previously? If so, was USE_LDCONFIG being
forced to 0 somewhere?

> If I add to my configuration:
>
>  DISTRO_FEATURES_BACKFILL_CONSIDERED_append = " ldconfig"
>
> This works around the issue...  but doesn't resolve the default issue....
>
> So my question is, is this behavior (the failure case) really acceptable without
> telling the user what is happening?  Or do we need to add something to the
> system that says meta-toolchain can't be used with this DISTRO_FEATURE?  or...
>
> --Mark
> --