Re: Native compilation on Windows, was Re: Bootstrap Compilation Speed

[Eli Zaretskii <eliz@gnu.org>]

> From: "H. Dieter Wilhelm" <dieter@duenenhof-wilhelm.de>
> Cc: corwin@bru.st,  phillip.lord@russet.org.uk,  emacs-devel@gnu.org
> Date: Sat, 29 Jan 2022 22:32:46 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > 1. First, I build the package (in this case, Emacs) as usual:
> >   $ ./configure --prefix=...
> >   $ make
> > 2. Then I install it in a special place:
> >   $ make install --prefix=/some/directory
> > 3. Then to produce a zip file with all the installed files, I go to
> >    /some/directory and invoke 'zip':
> >   $ zip -9r ./bin ./include ./lib ./libexec ./share ./var
> 
> Why is the folder ./var necessary?
> 
> (var/ wasn't installed on my system (28.0.91).)

It was used at some point in the past.  If it doesn't exist in the
installed tree, it isn't needed.

> > (be sure to mention all the top-level directories).  Now, the tricky
> > part is between steps 2 and 3.  To make the zip file self-contained,
> > you need to populate /some/directory tree with the dependencies.  If
> > those are DLLs, simply copy all of them into /some/directory/bin/.  If
> > there are other dependencies, they should go
> 
> It seems that only
> 
>    libgmp-10.dll
> 
> is a prerequisite to get Emacs (28.0.91) running on a Windows system
> without MSYS and
> 
>    libXpm-noX4.dll
> 
> provides a nicer logo and icons.  (I didn't test much functionality
> yet.)
> 
> In /nt/README.W32 is a list of further dependencies provided in MSYS2
> packages:
> 
>     mingw-w64-x86_64-giflib
>     mingw-w64-x86_64-gnutls
>     mingw-w64-x86_64-libjpeg-turbo
>     mingw-w64-x86_64-libpng
>     mingw-w64-x86_64-librsvg
>     mingw-w64-x86_64-libtiff
>     mingw-w64-x86_64-libxml2
>     mingw-w64-x86_64-xpm-nox
>     mingw-w64-x86_64-lcms2
> 
> are above dependencies considered as the absolut minimal set for a state
> of the art Emacs under Windows? 

They are not the "absolute minimum", but they are nice to have, yes.
Assuming you built Emacs with all those features, of course.  But the
up-to-date list is in nt/INSTALL.W64, and it includes a few more
packages (notably, HarfBuzz).