最新版OpenWrt编译教程，解决依赖问题

1. Install  git ,to conveniently download the OpenWrt source code,and  build tools to do the cross-compilation process:

   sudo apt-get update
   sudo apt-get install git-core build-essential libssl-dev libncurses5-dev unzip

   Some Feeds might not available over git but only via  subversion (short:  svn) or  mercurial. If you want to obtain their source-code,you need to install svn and mercurial as well:

   sudo apt-get install subversion mercurial

   • for @R_136_4045@ion about the build tools see  make and  build-essential
   • for @R_136_4045@ion about git see  git(7)
   • for @R_136_4045@ion about the subversion tool see  svn and  subversion documentation (multiple languages)
2. Download the OpenWrt bleeding edge(trunk Version) with  git ( see Downloading Sources for more options!):

   git clone git://git.openwrt.org/openwrt.git

   this creates a directory 'openwrt',which is the OpenWrt buildroot build-directory 
   the OpenWrt toolchain "OpenWrt buildroot" is included

( optional) Download and install all available "Feeds" ( see OpenWrt Feeds for more options!):

cd openwrt
./scripts/Feeds update -a
./scripts/Feeds install -a