Subject: Re: bug#48117: 28.0.50; Update of loaddefs.el during normal build is unreliable

From: Glenn Morris <[email-masked]>
Date: Sun, 02 May 2021 12:59:17 -0400

Glenn Morris wrote:

> Another idea, FWIW:
> In the make rule for $(lisp)/loaddefs.el, if loaddefs.el exists and is
> older than ldefs-boot.el, start by copying the latter to the former.
> This ought to limit how outdated loaddefs can get?

BTW, I think this might actually make things worse in terms of detecting
new secondary loaddefs files like texinfo-loaddefs (not that those
happen very often), by bumping the timestamp on the primary loaddefs.