Add Dockerfile.mingw

Dockerfile.mingw builds aria2 Windows binary.  It is probably the
easiest way to build the Windows binary.

Dockerfile.mingw

@@ -0,0 +1,93 @@
+# Dockerfile to build aria2 Windows binary using ubuntu mingw-w64
+# cross compiler chain.
+#
+# $ sudo docker build -t aria2-mingw - < Dockerfile.mingw
+#
+# After successful build, windows binary is located at
+# /aria2/src/aria2c.exe.  You can copy the binary using
+#
+# $ sudo docker cp <containerId>:/aria2/src/aria2c.exe <dest>
+
+FROM ubuntu
+
+MAINTAINER Tatsuhiro Tsujikawa
+
+# Change HOST to x86_64-w64-mingw32 to build 64-bit binary
+ENV HOST i686-w64-mingw32
+
+# It would be better to use nearest ubuntu archive mirror for faster
+# downloads.
+# RUN sed -ie 's/archive\.ubuntu/jp.archive.ubuntu/g' /etc/apt/sources.list
+
+RUN apt-get update
+RUN apt-get install -y make binutils autoconf automake autotools-dev libtool \
+    pkg-config git curl dpkg-dev gcc-mingw-w64 \
+    autopoint libcppunit-dev libxml2-dev libgcrypt11-dev lzip
+
+RUN curl -L -O https://gmplib.org/download/gmp/gmp-6.0.0a.tar.lz
+RUN curl -L -O http://downloads.sourceforge.net/project/expat/expat/2.1.0/expat-2.1.0.tar.gz
+RUN curl -L -O http://www.sqlite.org/2014/sqlite-autoconf-3080700.tar.gz
+RUN curl -L -O http://zlib.net/zlib-1.2.8.tar.xz
+RUN curl -L -O http://c-ares.haxx.se/download/c-ares-1.10.0.tar.gz
+
+RUN tar xf gmp-6.0.0a.tar.lz
+RUN cd gmp-6.0.0 && \
+    ./configure \
+    --disable-shared \
+    --enable-static \
+    --prefix=/usr/local/$HOST \
+    --host=$HOST \
+    --disable-cxx \
+    --enable-fat \
+    CFLAGS="-mtune=generic -O2 -g0" && \
+    make install
+
+RUN tar xf expat-2.1.0.tar.gz
+RUN cd expat-2.1.0 && \
+    ./configure \
+    --disable-shared \
+    --enable-static \
+    --prefix=/usr/local/$HOST \
+    --host=$HOST \
+    --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \
+    make install
+
+RUN tar xf sqlite-autoconf-3080700.tar.gz
+RUN cd sqlite-autoconf-3080700 && \
+    ./configure \
+    --disable-shared \
+    --enable-static \
+    --prefix=/usr/local/$HOST \
+    --host=$HOST \
+    --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \
+    make install
+
+RUN tar xf zlib-1.2.8.tar.xz
+RUN cd zlib-1.2.8 && \
+    CC=$HOST-gcc \
+    AR=$HOST-ar \
+    LD=$HOST-ld \
+    RANLIB=$HOST-ranlib \
+    STRIP=$HOST-strip \
+    ./configure \
+    --prefix=/usr/local/$HOST \
+    --libdir=/usr/local/$HOST/lib \
+    --includedir=/usr/local/$HOST/include \
+    --static && \
+    make install
+
+RUN tar xf c-ares-1.10.0.tar.gz
+RUN cd c-ares-1.10.0 && \
+    ./configure \
+    --disable-shared \
+    --enable-static \
+    --without-random \
+    --prefix=/usr/local/$HOST \
+    --host=$HOST \
+    --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` \
+    LIBS="-lws2_32" && \
+    make install
+
+RUN git clone https://github.com/tatsuhiro-t/aria2
+RUN cd aria2 && autoreconf -i && ./mingw-config && make && \
+    $HOST-strip src/aria2c.exe

Makefile.am

@@ -9,6 +9,7 @@ EXTRA_DIST = config.rpath \
 	     mingw-config mingw-release mingw-build-memo \
 	     android-config android-make \
 	     makerelease-osx.mk osx-package/DS_Store osx-package/etc/paths.d/aria2c osx-package/etc/manpaths.d/aria2 \
+	     Dockerfile.mingw \
 	     examples/libaria2ex.cc examples/libaria2wx.cc
 
 dist_doc_DATA = README README.rst README.html

README.rst

@@ -282,6 +282,10 @@ mingw-w64 (http://mingw-w64.sourceforge.net/) cross-compiler on Debian
 Linux. The MinGW (http://www.mingw.org/) may not be able to build
 aria2.
 
+The easiest way to build Windows binary is use Dockerfile.mingw.  See
+Dockerfile.mingw how to build binary.  If you cannot use Dockerfile,
+then continue to read following paragraphs.
+
 Basically, after compiling and installing depended libraries, you can
 do cross-compile just passing appropriate ``--host`` option and
 specifying ``CPPFLAGS``, ``LDFLAGS`` and ``PKG_CONFIG_LIBDIR``
@@ -294,7 +298,6 @@ We use it to create official Windows build.  This script assumes
 following libraries have been built for cross-compile:
 
 * c-ares
-* openssl
 * expat
 * sqlite3
 * zlib