>>>>> On Mon, 02 Mar 2020 11:58:39 -0500, Stefan Monnier <monnier@iro.umontreal.ca> said:

    >> BTW, Iʼve run into a small problem with that: Iʼm using regexp-opt,
    >> which results in:
    >> 
    >> Loading international/emoji-zwj...
    >> Attempt to autoload regexp-opt while preparing to dump
    >> make[1]: *** [emacs.pdmp] Error 255
    >> 
    >> I canʼt require it either:
    >> 
    >> Loading international/emoji-zwj...
    >> (require regexp-opt) while preparing to dump
    >> make[1]: *** [emacs.pdmp] Error 255

    Stefan> Try and make sure that regexp-opt is only used during compilation,
    Stefan> e.g. by wrapping it inside an `eval-when-compile`.

Thanks for that, itʼs working now.

Latest version attached.