bug#22959: Emacs on Windows depends on libwinpthreads

[Fabrice Popineau]

I know you have been doing an amazing job at providing carefully configured binary packages

for MinGW, but the situation is little bit more messy with MSys2/MingW64. And I don't have time

to go the same way you did.

Let's do some cleaning then.

 

> and the dll list is:
>
> /c/Local/Emacs/bin/libasprintf-0.dll*

Shouldn't be needed.

Agreed, after checking.

 

> /c/Local/Emacs/bin/libp11-kit-0.dll*

You should tell whoever build that GnuTLS to omit libp11-kit, it's
generally useless on Windows, certainly with Emacs.

Ok.

 

 

> /c/Local/Emacs/bin/libgnutlsxx-28.dll*

Shouldn't be required, as long as Emacs is not a C++ program.

 

Agreed. 

> /c/Local/Emacs/bin/libcharset-1.dll*

Agreed

 

Shouldn't be required.

>  /c/Local/Emacs/bin/libpangoft2-1.0-0.dll*
> /c/Local/Emacs/bin/libgraphite2.dll*
> /c/Local/Emacs/bin/libfontconfig-1.dll*
> /c/Local/Emacs/bin/libfreetype-6.dll*

Whoever built Cairo didn't take care of disabling features unneeded on
Windows for librsvg.  The result is a very fat build of Cairo, for no
good reason.

I have no insight on this. I think cairo is built independently 

> /c/Local/Emacs/bin/libpcre-1.dll*

is required by glib, itself required by cairo-gobject, croco, gdk_pixbuf, gio, gmodule, gobject.

 

> /c/Local/Emacs/bin/libexpat-1.dll*

Required by fontconfig.

 

> /c/Local/Emacs/bin/libharfbuzz-0.dll*

Is required by libfreetype-6.dll

Which itself is required by libcairo-2.dll

 

Are these also from librsvg dependencies?  If so, they are just
ballast, AFAIK.

> /c/Local/Emacs/bin/libfftw3-3.dll*

Which library needs this one?

MagickCore

 

>  /c/Local/Emacs/bin/libidn-11.dll*

Which library needs this one?

GnuTLS

 

>  /c/Local/Emacs/bin/libstdc++-6.dll*

 

Required by graphite

 

> /c/Local/Emacs/bin/libgcc_s_seh-1.dll*

Is required by libcairo-2.dll and its dependencies : libfontconfig-1.dll, libpixman-1-0.dll

 

>  /c/Local/Emacs/bin/liblcms2-2.dll*

Which library needs this?

MagickCore

 

> /c/Local/Emacs/bin/libtiffxx-5.dll*

This is for C++ program, AFAIK.

Agreed, removed.

 

> /c/Local/Emacs/bin/libgettextpo-0.dll*

Shouldn't be needed.

Agreed, removed.

 

> /c/Local/Emacs/bin/liblqr-1-0.dll*

What is this library?

MagickCore

 

> /c/Local/Emacs/bin/libltdl-7.dll*

Which library needs this one?

MagickCore

Fabrice