How to run N2N-compilation using Windows

Published: 2021-01-15 · 阅读量 --

According to Building说明 of N2N官方网站, the software required for Windows compilation is Visual Studio,Cmake,OpenSSL。

I got a headache when I saw Visual Studio. This software is very difficult to install. So I chose cross-compilation, that is, using the Linux environment to compile Windows exe and dll files.

#Compiled files

Compilation environment:

Contains edge, supernode, openssl链接库 (necessary for n2n operation), tap-windows安装包 (necessary for n2n operation, Win7&Win10)

Prepare the compilation environment

Use yum to install necessary software, the following is the author’s reference document

wget https://download.margrop.net/d/oneindex/network/n2n_2.8_stable/Windows/edge.exe -O edge
wget https://download.margrop.net/d/oneindex/network/n2n_2.8_stable/Windows/supernode.exe -O supernode
wget https://download.margrop.net/d/oneindex/network/n2n_2.8_stable/Windows/libcrypto-1_1-x64.dll -O libcrypto-1_1-x64.dll
wget https://download.margrop.net/d/oneindex/network/n2n_2.8_stable/Windows/libssl-1_1-x64.dll -O libssl-1_1-x64.dll

OpenSSL cross-compilation

apt-get install mingw-w64
apt-get install cmake
apt-get install openssl
apt-get install libssl-dev
apt-get install build-essential git bison flex libxml2-dev libpcap-dev libtool libtool-bin rrdtool librrd-dev autoconf pkg-config automake autogen redis-server wget libsqlite3-dev libhiredis-dev libmaxminddb-dev libcurl4-openssl-dev libpango1.0-dev libcairo2-dev libnetfilter-queue-dev zlib1g-dev libssl-dev libcap-dev libnetfilter-conntrack-dev libreadline-dev libjson-c-dev libldap2-dev rename libsnmp-dev

Download N2N source code

wget https://www.openssl.org/source/openssl-1.1.1i.tar.gz
tar -xvzf openssl-1.1.1i.tar.gz
cd openssl-1.1.1i
CROSS_COMPILE="x86_64-w64-mingw32-"  ./Configure mingw64 no-asm -shared --prefix=/opt/toolchain/openssl/install-x86_64

make
make install

N2N cross compilation preparation

Create a new toolChain.cmake file in the n2n directory and enter the following configuration content

cd ~
git clone https://github.com/ntop/n2n
cd n2n
git checkout 2.8-stable

N2N cross compilation

Cross-compile n2n using CMake

cd ~/n2n
vim toolChain.cmake

SET(CMAKE_SYSTEM_NAME Windows)
SET(CMAKE_CROSSCOMPILING TRUE)
SET(CMAKE_CROSSCOMPILER "x86_64-w64-mingw32-")
SET(CMAKE_C_COMPILER "${CMAKE_CROSSCOMPILER}gcc")
SET(CMAKE_CXX_COMPILER "${CMAKE_CROSSCOMPILER}g++")
SET(CMAKE_FIND_ROOT_PATH /opt/toolchain/openssl/install-x86_64)
SET(CMAKE_VERBOSE_MAKEFILE on)

Install TapWindows 9.24.2

mkdir build
cd build
cmake -DCMAKE_TOOLCHAIN_FILE=../toolChain.cmake ..
make

Optional, how to start multiple edge nodes on the same machine

Access the Tap-Windows installation directory of the Windows machine. The default is C:\Program Files\TAP-Windows\bin. There is a addtap.bat file under this directory. Repeat this addtap.bat file to add multiple virtual network cards in Windowsv. Multiple virtual network cards can be seen in 更改适配器设置 inside 网络和共享中心.
If there are too many virtual network cards, you can also delete them. Enter 设备管理器 and delete the unnecessary virtual network cards.