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

[Eli Zaretskii]

> From: hx <address@hidden>
> Date: Mon, 11 Feb 2019 09:21:20 +0800
> 
> can't compile emacs26 today after git pull,
> CentOS7 X64:
> 
> make[2]: Entering directory `/emacs-26-src/lisp'
>   ELC      ../lisp/international/ucs-normalize.elc
> 
> In toplevel form:
> international/ucs-normalize.el:266:56:Error: Symbol’s function definition is 
> void: regexp-opt-charset
> make[2]: *** [../lisp/international/ucs-normalize.elc] Error 1

I think I understand why, but just so I'm sure: can you tell how you
configured this build?  What was the command line with which you
invoked the 'configure' script?