Re: HarfBuzz is available on MS-Windows

["Óscar Fuentes" <ofv@wanadoo.es>]

Eli Zaretskii <eliz@gnu.org> writes:

> The harfbuzz branch can now be built on MS-Windows, and will support
> the new 'harfbuzz' font backend if the requisite DLLs are installed.
>
> Work still continues on the branch in preparation for landing it on
> master at a later date, but I'd like at this time to ask people to try
> building the branch on Windows and report any problems they see.  Once
> the branch is built, you can test that it's working by typing "C-h h"
> and seeing whether HELLO displays correctly.
>
> By default, the 'harfbuzz' backend is preferred to the other ones, so
> if everything is OK, "C-u C-x =" on any character in HELLO should show
> "harfbuzz" at the beginning of the font name used to display the
> character.

Finally got it working, but the font name on M-x describe-char still is
prepended by "uniscribe". Harfbuzz is installed and the configure script
knows about it [1], although I haven't seen the point where it is
specifically tested for presence.

1: this is a typical gcc invocation taken from config.log. Note -isystem
... harfbuzz:

  16123:configure:19686: gcc -I /d/dev/other/MINGW-packages/mingw-w64-emacs-git/src/emacs/nt/inc -o conftest.exe -march=x86-64 -mtune=generic -O2 -pipe -pthread -mms-bitfields -isystem C:/apps/msys64/mingw64/include/librsvg-2.0 -isystem C:/apps/msys64/mingw64/include/gdk-pixbuf-2.0 -isystem C:/apps/msys64/mingw64/include/libpng16 -isystem C:/apps/msys64/mingw64/include -isystem C:/apps/msys64/mingw64/include/cairo -isystem C:/apps/msys64/mingw64/include -isystem C:/apps/msys64/mingw64/lib/libffi-3.2.1/include -isystem C:/apps/msys64/mingw64/include/pixman-1 -isystem C:/apps/msys64/mingw64/include -isystem C:/apps/msys64/mingw64/include/freetype2 -isystem C:/apps/msys64/mingw64/include -isystem C:/apps/msys64/mingw64/include/harfbuzz -isystem C:/apps/msys64/mingw64/include/glib-2.0 -isystem C:/apps/msys64/mingw64/lib/glib-2.0/include -isystem C:/apps/msys64/mingw64/include -isystem C:/apps/msys64/mingw64/include/libpng16 -isystem C:/apps/msys64/mingw64/include -mtune=generic  -D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -pipe conftest.c   >&5