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

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From: Eli Zaretskii <eliz <at> gnu.org>
To: akrl <at> sdf.org
Cc: 46256 <at> debbugs.gnu.org
Subject: bug#46256: [feature/native-comp] AOT eln files ignored if run from build tree
Date: Thu, 04 Mar 2021 20:56:05 +0200

I have a question about the build process of the native-comp branch:

Say I bootstrapped a fresh checkout without NATIVE_FULL_AOT=1, and I
now have a subdirectory under the native-lisp/ directory populated
with the *.eln files of the Lisp files we preload.

Now I make some change in Emacs that modifies the ABI hash, and
rebuild.  The previous subdirectory of native-lisp/ is no longer
valid; if I modify some of the preloaded Lisp files, a new .eln file
is produced in a new subdirectory of native-lisp/.  But now that new
subdirectory has only the *.eln files for those Lisp files I modified
_after_ the ABI-changing change.  Which means most of the preloaded
files do not have *.eln files in the native-lisp/ subdirectory that
corresponds to the latest ABI.  Does this mean Emacs now falls back to
using *.elc files when it produces the emacs.pdmp file?

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