Re: Timestamps in ...-autoloads.el files

[Alex Kost]

Ludovic Courtès (2016-05-16 15:45 +0300) wrote:

> Alex Kost <address@hidden> skribis:
[...]
>> I looked at the compiled "autoload.elc" file and if I understood it
>> correctly, it was compiled using the unpatched version of "autoload.el"
>> (because there is no mention of SOURCE_DATE_EPOCH there).
>
> Indeed.
>
>> But I don't understand how it could happen since patching is performed
>> before building.  Any ideas?
>
> I think I have one:
>
> $ git describe
> v0.10.0-798-g8a7680a
> $ tar tvf $(./pre-inst-env guix build -S emacs) |grep 'autoload\.el'
> -rw-r--r-- root/root     37292 1970-01-01 01:00 
> emacs-24.5/lisp/emacs-lisp/autoload.el
> -rw-r--r-- root/root     37127 1970-01-01 01:00 
> emacs-24.5/lisp/emacs-lisp/autoload.el.orig
> -rw-r--r-- root/root     22624 1970-01-01 01:00 
> emacs-24.5/lisp/emacs-lisp/autoload.elc
>
> Upstream’s tarball already includes those three files.

IIUC this source is after applying our patches (including
"emacs-source-date-epoch.patch"):

- “autoload.el.orig” is the original file from the upstream;

- “autoload.el” is the patched one;

- “autoload.elc” is the compiled file also from the upstream (obviously
  it doesn't honor SOURCE_DATE_EPOCH).

Thanks, the mystery is solved now.  This is an unpleasant surprise, I
didn't know that emacs release comes with the compiled files.

> Ideally, we
> should remove all the .elc files and rebuild them, but maybe there are
> bootstrapping issues.
>
> Would you be willing to give it a try?  :-)

I'll see what I can do here.

-- 
Alex