bug#46256: [feature/native-comp] AOT eln files ignored if run from build tree

[Andy Moreton]

On Sat 27 Feb 2021, Andrea Corallo via "Bug reports for GNU Emacs, the Swiss 
army knife of text editors" wrote:

> Andy Moreton <andrewjmoreton@gmail.com> writes:
>> There are still some elisp files that did not get native compiled when
>> the build was done with "make -j8 NATIVE_FULL_AOT=1", and so get async
>> compiled when running the built emacs:
>>
>>   ansi-color auth_source byte-opt bytecomp cconv cl-extra cl-lib cl-macs
>>   cl-seq comint comp comp-cstr cus-edit cus-start desktop
>>   display-fill-column-indicator easy-mmode easymenu edmacro eieio
>>   eieio-core frameset gv help-mode hl-line image-file info json kmacro
>>   map minibuf-eldef package paren password-cache pcase pp ring rx seq
>>   subr-x time-date warnings wid-edit
>>
>> That may be a result of the error during the build.
>
> Mmmmh, that's strange some of these are even compiled as COMPILE_FIRST
> therfore are certainly native compiled.

I suspect that the issue may be with parallel builds (note the "-j8"
above). Repeating the build with "-j1" appears to be building the
missing .eln files as expected.

    AndyM