Re: Witness computation - minor breakage in the build system

[Paul Eggert]

Stefan Monnier wrote:
> The witness file does change, tho.

Do you mean that its contents change, or that its timestamp changes?

If the witness file's contents depend only on the
set of autoloaded functions, and if its time stamp reflects
the last time its contents changed, we should get the
dependency that we want.

We'll also need a timestamp file, which will have the
last time the witness file was recomputed,
as opposed to the last time that it changed.
This timestamp file can depend on all the .el files,
whereas the later parts of the build procedure
can depend on the witness file.