bug#42940: feature/native-comp; xref-find-definition searches compile location of el files instead of install location

[Tom Gillespie <tgbugs@gmail.com>]

It seems that the problem was only partially fixed at
c818c29771d3cb51875643b2f6c894073e429dd2.

emacs -q -batch --no-site-file --eval "(xref-find-definitions
'shell-command)" succeeds whereas

emacs -q -batch --no-site-file --eval "(xref-find-definitions 'looking-at-p)"
No library /var/tmp/portage/app-editors/emacs-28.0.9999-r1/work/emacs/lisp/subr.el
in search path
No definitions found for: looking-at-p

A wrinkle is that the following succeeds when I explicitly require
'subr, but produces another warning which seems like it
might be related to why 'looking-at-p is not found without explicitly
requiring 'subr.
emacs -q -batch --no-site-file --eval "(require 'subr)" --eval
"(xref-find-definitions 'looking-at-p)"
Loading file /usr/libexec/emacs/28.0.50/x86_64-pc-linux-gnu/eln-cache/x86_64-pc-linux-gnu-bbae9d63d1309894/subr-8e7058db29bf20a68ef89651c940f16d2e5087b6bf685b48ddeb1de1dcd6ad02.eln
failed to provide feature ‘subr’

On Fri, Aug 21, 2020 at 12:44 AM Andrea Corallo <akrl@sdf.org> wrote:
>
> Tom Gillespie <tgbugs@gmail.com> writes:
>
> > This is fixed at c818c29771d3cb51875643b2f6c894073e429dd2 for me so it
> > looks like that reversion did the trick. Thanks!
>
> Thank you for reporting that!  Closing
>
>   Andrea
>
> --
> akrl@sdf.org