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基于官方提供的Dockerfile，在Docker中交叉编译。
Windows下不太便于安装Docker，所以我是在Ubuntu虚拟机中安装了Docker进行操作的。
先将aria2的源代码中的Dockerfile.mingw下载下来，修改之后如下，我把修改的地方用中文标注了。
# 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 following# commands:## $ id=$(sudo docker create aria2-mingw)# $ sudo docker cp $id:/aria2/src/aria2c.exe# $ sudo docker rm -v $idFROM ubuntu:16.04MAINTAINER Tatsuhiro Tsujikawa# Change HOST to x86_64-w64-mingw32 to build 64-bit binary### 编译64位程序 ###ENV HOST x86_64-w64-mingw32# It would be better to use nearest ubuntu archive mirror for faster# downloads.# RUN sed -ie 's/archive\.ubuntu/jp.archive.ubuntu/g' /etc/apt/sources.list### 使用中科大ubuntu源 ###RUN sed -i 's/archive.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.listRUN apt-get update && \ apt-get install -y \ make binutils autoconf automake autotools-dev libtool \ pkg-config git curl dpkg-dev gcc-mingw-w64 \ autopoint libcppunit-dev libxml2-dev libgcrypt11-dev lzip### 使用代理下载文件(代理可能会不可用，开启全局科学上网的情况下，可以删除这里的代理设置) ###RUN curl -x socks5h://192.168.31.5:1080 -L -O https://gmplib.org/download/gmp/gmp-6.1.2.tar.lz && \ curl -x socks5h://192.168.31.5:1080 -L -O https://github.com/libexpat/libexpat/releases/download/R_2_2_5/expat-2.2.5.tar.bz2 && \ curl -x socks5h://192.168.31.5:1080 -L -O https://www.sqlite.org/2018/sqlite-autoconf-3230100.tar.gz && \ curl -x socks5h://192.168.31.5:1080 -L -O http://zlib.net/zlib-1.2.11.tar.gz && \ curl -x socks5h://192.168.31.5:1080 -L -O https://c-ares.haxx.se/download/c-ares-1.14.0.tar.gz && \ curl -x socks5h://192.168.31.5:1080 -L -O http://libssh2.org/download/libssh2-1.8.0.tar.gzRUN tar xf gmp-6.1.2.tar.lz && \ cd gmp-6.1.2 && \ ./configure \ --disable-shared \ --enable-static \ --prefix=/usr/local/$HOST \ --host=$HOST \ --disable-cxx \ --enable-fat \ CFLAGS="-mtune=generic -O2 -g0" && \ make installRUN tar xf expat-2.2.5.tar.bz2 && \ cd expat-2.2.5 && \ ./configure \ --disable-shared \ --enable-static \ --prefix=/usr/local/$HOST \ --host=$HOST \ --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \ make installRUN tar xf sqlite-autoconf-3230100.tar.gz && \ cd sqlite-autoconf-3230100 && \ ./configure \ --disable-shared \ --enable-static \ --prefix=/usr/local/$HOST \ --host=$HOST \ --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` && \ make installRUN tar xf zlib-1.2.11.tar.gz && \ cd zlib-1.2.11 && \ CC=$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/$HOST/include \ --static && \ make installRUN tar xf c-ares-1.14.0.tar.gz && \ cd c-ares-1.14.0 && \ ./configure \ --disable-shared \ --enable-static \ --without-random \ --prefix=/usr/local/$HOST \ --host=$HOST \ --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` \ LIBS="-lws2_32" && \ make installRUN tar xf libssh2-1.8.0.tar.gz && \ cd libssh2-1.8.0 && \ ./configure \ --disable-shared \ --enable-static \ --prefix=/usr/local/$HOST \ --host=$HOST \ --build=`dpkg-architecture -qDEB_BUILD_GNU_TYPE` \ --without-openssl \ --with-wincng \ LIBS="-lws2_32" && \ make installADD https://api.github.com/repos/aria2/aria2/git/refs/heads/master version.json### 这里是下载aria2官方源码编译，自定义源码可修改这里的地址 ###RUN git clone https://github.com/aria2/aria2 && \ cd aria2 && autoreconf -i && ./mingw-config && make && \ $HOST-strip src/aria2c.exe
编译和导出的方法在该文件最上面的注释中已经说明了，相信大家能看懂,代理如果不可用了大家可以自己更改代理
进入Dockerfile.mingw目录，执行如下命令编译
sudo docker build -t aria2-mingw - < Dockerfile.mingw
成功后编译好的 exe 文件会放置在 /aria2/src/aria2c.exe。
通过下面的命令将其复制到当前目录：
id=$(sudo docker create aria2-mingw)sudo docker cp $id:/aria2/src/aria2c.exe ./sudo docker rm -v $id
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