udp2raw/doc/build_guide.md

udp2raw build guide

the guide on how to build udp2raw to you own platform

linux platform which supports local compile

such as PC,raspberry pi

install git

run on debian/ubuntun：

sudo apt-get install git

run on redhat/centos:

sudo yum install git

clone git code

run in any dir：

git clone https://github.com/wangyu-/udp2raw-tunnel.git
cd udp2raw-tunnel

install compile tool

run on debian/ubuntun：

sudo apt-get install build-essential

run on redhat/centos:

sudo yum groupinstall 'Development Tools'

run 'make'，compilation done. the udp2raw file is the just compiled binary

platform which needs cross-compile

such as openwrt router,run following instructions on your PC

install git

run on debian/ubuntun：

sudo apt-get install git

run on redhat/centos:

sudo yum install git

download cross compile tool chain

find it on downloads.openwrt.org according to your openwrt version and cpu model.

for example, my tplink wdr4310 runs chaos_calmer 15.05,its with ar71xx cpu，download the following package.

http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64.tar.bz2

unzip it to any dir,such as ：/home/wangyu/OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2

cd into staging_dir ，toolchain-xxxxx ，bin .find the soft link with g++ suffix. in my case ,its mips-openwrt-linux-g++ ,check for its full path:

/home/wangyu/Desktop/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/staging_dir/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/bin/mips-openwrt-linux-g++

compile

modify first line of makefile to:

cc_cross=/home/wangyu/Desktop/OpenWrt-SDK-15.05-ar71xx-generic_gcc-4.8-linaro_uClibc-0.9.33.2.Linux-x86_64/staging_dir/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/bin/mips-openwrt-linux-g++

run 'make cross'，the just generated udp2raw_cross is the binary,compile done. copy it to your router to run.