Update the various INSTALL files

* nt/INSTALL.W64:
* nt/INSTALL:
* INSTALL: Update the installation information, in particular the
fact that HarfBuzz is now preferred as the shaping library.

2 files changed, 25 insertions, 5 deletions

diff --git a/nt/INSTALL b/nt/INSTALL
index 2fe2c8c2673..27fb5f096f7 100644
--- a/nt/INSTALL
+++ b/nt/INSTALL
@@ -502,11 +502,21 @@ build will run on Windows 9X and newer systems).
        Does Emacs use -lgnutls?                                yes
        Does Emacs use -lxml2?                                  yes
        Does Emacs use -lfreetype?                              no
+       Does Emacs use HarfBuzz?                                yes
        Does Emacs use -lm17n-flt?                              no
        Does Emacs use -lotf?                                   no
        Does Emacs use -lxft?                                   no
+       Does Emacs use -lsystemd?                               no
+       Does Emacs use -ljansson?                               yes
+       Does Emacs use the GMP library?                         yes
        Does Emacs directly use zlib?                           yes
+       Does Emacs have dynamic modules support?                yes
        Does Emacs use toolkit scroll bars?                     yes
+       Does Emacs support Xwidgets?                            no
+       Does Emacs have threading support in lisp?              yes
+       Does Emacs support the portable dumper?                 yes
+       Does Emacs support the legacy unexec dumping?           no
+       Which dumping strategy does Emacs use?                  pdumper
 
   You are almost there, hang on.
 
@@ -815,6 +825,14 @@ build will run on Windows 9X and newer systems).
   the libjansson DLL (for 32-bit builds of Emacs) are available from
   the ezwinports site and from the MSYS2 project.
 
+* Optional support for HarfBuzzz shaping library
+
+  Emacs supports display of complex scripts and Arabic shaping.  The
+  preferred library for that is HarfBuzz; prebuilt binaries are
+  available from the ezwinports site (for 32-bit builds of Emacs) and
+  from the MSYS2 project.  If HarfBuzz is not available, Emacs will
+  use the Uniscribe shaping engine that is part of MS-Windows.
+
 
 This file is part of GNU Emacs.
 
diff --git a/nt/INSTALL.W64 b/nt/INSTALL.W64
index c3d4dfa4c28..498fc38f612 100644
--- a/nt/INSTALL.W64
+++ b/nt/INSTALL.W64
@@ -55,14 +55,16 @@ packages (you can copy and paste it into the shell with Shift + Insert):
   mingw-w64-x86_64-jansson \
   mingw-w64-x86_64-libxml2 \
   mingw-w64-x86_64-gnutls \
-  mingw-w64-x86_64-zlib
+  mingw-w64-x86_64-zlib \
+  mingw-w64-x86_64-harfbuzz
 
 The packages include the base developer tools (autoconf, grep, make, etc.),
 the compiler toolchain (gcc, gdb, etc.), several image libraries, an XML
-library, the GnuTLS (transport layer security) library, and zlib for
-decompressing text.  Only the first three packages are required (base-devel,
-toolchain, xpm-nox); the rest are optional.  You can select only part of the
-libraries if you don't need them all.
+library, the GnuTLS (transport layer security) library, zlib for
+decompressing text, and HarfBuzz for use as the shaping engine.  Only the
+first three packages are required (base-devel,  toolchain, xpm-nox); the
+rest are optional.  You can select only part of the libraries if you don't
+need them all.
 
 You now have a complete build environment for Emacs.