2017-10-28 19:34 GMT+02:00 Eli Zaretskii <eliz@gnu.org>:

> > From: Fabrice Popineau <fabrice.popineau@gmail.com>
> > Date: Sat, 28 Oct 2017 19:28:11 +0200
> >
> > I have done
> > make distclean
> > make bootstrap
> > ../emacs/configure --prefix= ...
> >
> > and I had the surprise that somehow, my whole mingw64 directory -- where
> emacs is meant to be installed --
> > has been _erased_ .
>
> By "mingw64 directory" do you mean the directory specified by --prefix?
> Or do you mean something else?
>

I configure with --prefix=/mingw64
and everything under /mingw64/bin has been erased