Re: emacs26, ucs-normalize.el, Symbol’s function definition is void: regexp-opt-charset

[Stefan Monnier <monnier@iro.umontreal.ca>]

> Although a --without-x bootstrap does work (eg this is what the
> hydra.nixos "tarball" job is), it's not clear to me why it works.
> (Maybe something calls regexp-opt during bootstrap, which triggers an
> autoload?) There is a problem, however, as shown by the fact that in a
> --without-x build post-bootstrap, this fails:

Most likely regexp-opt gets loaded during the first run of "loadup", so
the compilation of ucs-normalize by the initial bootstrap-emacs
succeeds, even tough the compilation of that same file by the
`emacs` fails.

So a later "make" can succeed or fail depending on which files needs to
be recompiled.


        Stefan