ubuntu 16.04 install openwrt

sudo apt-get install  gcc  binutils  bzip2  flex  python  perl  make  grep  unzip  gawk   subversion  libz-dev libgetopt++-dev libncurses5-dev

1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
defined in feeds.conf / feeds.conf.default

2. Run "./scripts/feeds install -a" to install symlinks for all obtained
packages into package/feeds/

3. Run "make menuconfig" to select your preferred configuration for the
toolchain, target system & firmware packages.

4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.