[pango/README.win32] README.win32: Update Windows build instructions

[Chun-wei Fan <fanchunwei src gnome org>]

commit 9eedd7d2ac1c34b69cf4485ca449636d3c9d40bb
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Sep 7 10:59:31 2021 +0800

    README.win32: Update Windows build instructions
    
    We now really require HarfBuzz, and Visual Studio 2015 or later since we are
    using HarfBuzz 2.6.0 items and we have much more C99 items being used in the
    code in Pango main.
    
    Also let people know that for Visual Studio builds, Ninja builds are better
    supported by Meson at this point.

 README.win32 | 50 +++++++++++++++++++++++++-------------------------
 1 file changed, 25 insertions(+), 25 deletions(-)
---
diff --git a/README.win32 b/README.win32
index 5368d8cb..64579859 100644
--- a/README.win32
+++ b/README.win32
@@ -8,14 +8,21 @@ its main use nowadays is on other platforms than Win32.
 
 To build Pango for Win32:
 
-You need to have gcc (mingw) or Visual Studio 2008~2017, along with
-Python 3.4.x+ and Meson 0.43.0.  If building the introspection files,
-you will also need to ensure that the Python release series and
-build architecture (i.e. Win32 (x86)/x64 (amd64/x86-64) matches the
-Python release series and build architecture that was used to build
-GObject-Introspection.  The Python interpreter executable directory
-must be in your PATH.  The Ninja build utility must also be in your
-PATH, unless using the Visual Studio IDE as noted below.
+You need to have gcc (mingw-w64) or Visual Studio 2015 or later, along with
+Python 3.6.x+ and Meson 0.55.3 at the time of writing.  If building
+the introspection files, you will also need to ensure that the Python
+release series and build architecture (i.e. Win32 (x86)/
+x64 (amd64/x86-64) matches the Python release series and build
+architecture that was used to build GObject-Introspection.
+The Python interpreter executable directory must be in your PATH.
+The Ninja build utility must also be in your PATH, unless using the
+Visual Studio IDE as noted below.  Cross-compiling Pango for ARM64/aarch64
+with Visual Studio 2017 or later is also supported, provided if a cross
+compilation file for Meson is properly setup for such builds (please refer
+to the Meson documentation for further instructions).  Support for
+introspection for ARM64 builds is currently not supported, due to the lack
+of an official build of Python for ARM64 Windows, and introspection builds
+are currently not supported for any cross-builds.
 
 You will also need the following libraries installed with their headers
 and import libraries, and their DLLs, if applicable, needs to be found in
@@ -27,9 +34,9 @@ only their headers/import libraries are needed on Visual Studio:
 -Fribidi
 -Cairo* (With Win32 support built in, and optionally FreeType and FontConfig
          support for building PangoFT2.)
+-HarfBuzz* (GLib support required, and FreeType2 if building PangoFT2)
 -FreeType* (Optional, needed for PangoFT2)
 -FontConfig* (Optional, needed for PangoFT2)
--HarfBuzz* (Optional, GLib and FreeType support required if used, needed for PangoFT2)
 
 Please see meson.build to see what versions are needed for these dependencies.
 
@@ -40,30 +47,23 @@ Follow the following steps to build Pango:
 (With MinGW, please adjust the paths accordingly, in a MSYS/MSYS2 bash prompt)
 PATH=/devel/dist/glib-2.8.0/bin:$PATH ACLOCAL_FLAGS="-I /devel/dist/glib-2.8.0/share/aclocal" 
PKG_CONFIG_PATH=/devel/dist/glib-2.8.0/lib/pkgconfig:$PKG_CONFIG_PATH CC='gcc -mtune=pentium3' 
CPPFLAGS='-I/opt/gnu/include' LDFLAGS='-L/opt/gnu/lib' CFLAGS=-O meson $(PATH_TO_SRC) 
--buildtype=$(buildtype) --prefix=$(PREFIX)
 
-(With Visual Studio, set the INCLUDE, LIB, PATH and PKG_CONFIG_PATH envvars as
+(With Visual Studio, set the INCLUDE, LIB, PATH and envvars as
 needed before running the following in a Visual Studio command prompt)
-python $(PATH_TO_meson.py) $(PATH_TO_SRC) --buildtype=$(buildtype) --prefix=$(PREFIX)
+meson $(PATH_TO_SRC) --buildtype=$(buildtype) --prefix=$(PREFIX) [--pkg-config-path=...]
 
-For Visual Studio builds, building using the Visual Studio IDE is also supported
-with Visual Studio 2010, 2015 and 2017.  Append --backend=vs to the Meson
-configuration command above to use this support.
+For Visual Studio builds, support for building using the Visual Studio IDE
+is also supported to some extent.  Append --backend=vs to the Meson
+configuration command above to use this support.  Note that this support
+may not work as well as the builds that are carried out by Ninja, and
+issues in regards to building with Meson using Visual Studio with the IDE (i.e.
+msbuild) should be reported to the Meson project.
 
 2) Build Pango by running Ninja, or by opening and building the generated
-   Visual Studio 2010/2015/2017 solution file.
+   Visual Studio solution file.
        
 3) Run tests and/or install the build using the "test" and "install" targets
    or sub-projects respectively.
 
-4) If building with Visual Studio 2008, you will need to do the run the following
-   lines in the Visual Studio or SDK command prompt after building and installing.
-   From the build directory:
-   for /f %a in (*.dll.manifest) do if exist $(PREFIX)\bin\%~na /manifest %a 
/outputresource:$(PREFIX)\bin\%~na;2
-   for /f %a in (*.exe.manifest) do if exist $(PREFIX)\bin\%~na /manifest %a 
/outputresource:$(PREFIX)\bin\%~na;1
-   for /f %a in (*.exe.manifest) do if exist $(PREFIX)\libexec\installed-tests\pango\%~na /manifest %a 
/outputresource:$(PREFIX)\libexec\installed-tests\pango\%~na;1
-   
-   So that the security manifests that are generated can be embedded into the built
-   DLLs and EXEs so that they can be usable.
-
 See the following GNOME Live! page for a more detailed description of building
 Pango's dependencies with Visual Studio: