Use Automake to build on Windows

Remove the old Makefile.mingw makefile and use the normal Unix
makefile, running the build under MSYS2 environment. Update the README
file accordingly. This is possible now that MSYS2 matured significantly
and includes all dependencies in their repository.

Author: vslavik

Makefile.am

@@ -11,4 +11,15 @@ diff_pdf_SOURCES = \
 diff_pdf_CXXFLAGS = $(POPPLER_CFLAGS) $(WX_CXXFLAGS)
 diff_pdf_LDADD = $(POPPLER_LIBS) $(WX_LIBS)
 
-EXTRA_DIST = gtk-zoom-in.xpm gtk-zoom-out.xpm
+EXTRA_DIST = gtk-zoom-in.xpm gtk-zoom-out.xpm win32/fonts.conf win32/collect-dlls.sh
+
+windows-dist: diff-pdf-$(VERSION).zip
+
+diff-pdf-$(VERSION).zip: all
+	rm -rf $@ windist
+	$(srcdir)/win32/collect-dlls.sh windist diff-pdf.exe
+	mkdir -p windist/fonts && cp -a $(srcdir)/win32/fonts.conf windist/fonts/
+	(cd windist && zip -9r ../$@ .)
+	rm -rf windist
+
+.PHONY: windows-dist

Makefile.mingw

@@ -34,9 +34,9 @@ See the output of `$ diff-pdf --help` for complete list of options.
 
 ## Obtaining the binaries
 
-Precompiled version of the tool for Windows is available from our
-[downloads](http://www.tt-solutions.com/downloads/diff-pdf-2012-02-28.zip)
-section -- the ZIP archive contains everything you need to run diff-pdf. It will
+Precompiled version of the tool for Windows is available as part of
+[the latest release](https://github.com/vslavik/diff-pdf/releases/tag/v0.3)
+as a ZIP archive, which contains everything you need to run diff-pdf. It will
 work from any place you unpack it to.
 
 On Mac, if you use [Homebrew](https://brew.sh), you can use it to install diff-pdf with it:
@@ -84,7 +84,7 @@ $ sudo apt-get install make automake g++
 $ sudo apt-get install libpoppler-glib-dev poppler-utils wxgtk3.0-dev
 ```
 
-#### OSX:
+#### macOS:
 Install Command Line Tools for Xcode:
 
 ```
@@ -108,40 +108,37 @@ libraries Cairo and Poppler use are normally available. At the time of writing,
 transitive cover of the above dependencies included fontconfig, freetype, glib,
 libpng, pixman, gettext, libiconv, libjpeg and zlib.
 
-Precompiled version of the dependencies for Windows, built with MinGW, are
-available from our [downlods](http://github.com/vslavik/diff-pdf/downloads)
-section (wxWidgets is not included, as it supports MinGW well).
 
+### Compiling on Windows using MSYS + MinGW
 
-### Compiling on Windows using MinGW
+1. First of all, you will need working MinGW installation with MSYS2 environment
+and C++ compiler. Install MSYS2 by following [their instructions](https://www.msys2.org).
 
-1. First of all, you will need working MinGW installation with MSYS environment
-and C++ compiler. The instructions on installing MinGW can be found in the
-[MinGW website](http://www.mingw.org/wiki/Getting_Started):
-
-1. Once installed, launch the MinGW Shell tool. It will open a terminal window;
-type `$ cd /c/directory/with/diff-pdf` to do to the directory with diff-pdf
+1. Once installed, launch the MSYS2 MinGW shell. It will open a terminal window;
+type `cd /c/directory/with/diff-pdf` to go to the directory with diff-pdf
 sources.
 
-1. You will need to install additional MinGW components that are not normally
-included with MinGW, using these commands:
+1. You will need to install additional MSYS components that are not normally
+included with MSYS, using these commands:
 
     ```
-    $ mingw-get install msys-wget
-    $ mingw-get install msys-unzip
-    $ mingw-get install msys-perl
+    $ pacman -Syu
+    $ pacman -S automake autoconf pkg-config make zip
+    $ pacman -S pacman -S mingw-w64-i686-{gcc,poppler,wxWidgets}
     ```
 
-1. It's time to build the software now and give it some time to finish (Note
-that this step requires Internet connectivity, as it downloads some dependencies
-packages):
+1. Build diff-pdf in the same way as in the instructions for Unix above:
 
     ```
-    $ make -f Makefile.mingw
+    $ ./bootstrap  # only if building from git repository
+    $ ./configure
+    $ make
     ```
 
-1. If everything went well, diff-pdf is now in the `mingw\Products\`
-directory.
+1. To build a ZIP archive will all DLLs, run
+    ```
+    $ make windows-dist
+    ```
 
 
 ## Installing
@@ -150,4 +147,4 @@ On Unix, the usual `make install` is sufficient.
 
 On Windows, installation is not necessary, just copy the files somewhere. If
 you built it following the instructions above, all the necessary files will be
-in the `mingw\Products\` directory.
+in the created ZIP archive.