Seattle is an open research and educational testbed that utilizes computational resources provided by end users on their existing devices. This project offers an OpenWRT package for Seattle.

barrier_breaker: https://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/
chaos_calmer: https://downloads.openwrt.org/chaos_calmer/15.05-rc2/ar71xx/generic/
Then you need to extract the tarball.

Assuming that your SDK parent(root) directory is as below OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2

cd OpenWrt-SDK-ar71xx-for-Linux-i686-gcc-4.3.3+cs_uClibc-0.9.30.1/package
git clone https://github.com/XuefengHuang/seattle-package.git
mv seattle-package seattle

Now, go to your OpenWRT SDK directory and simply execute 'make', then all build start.

cd ..
make clean && make world

If you get errors like awk: include/scan.awk: line 21: function asort never defined, you need to install gawk.

When your build is sucessfully completed, You can find the build package (seattle_1.0-1_ar71xx.ipk) in below folder OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2/bin/ar71xx/packages(barrier_breaker) or OpenWrt-SDK-ar71xx-for-linux-x86_64-gcc-4.8-linaro_uClibc-0.9.33.2/bin/ar71xx/packages/base(chaos_calmer)

Copy this ipk package (in this example seattle_1.0-1_ar71xx.ipk file) to router by any useful tool such as SCP.

opkg install seattle_1.0-1_ar71xx.ipk

You also can use dest-name as the the root directory for package installation, removal, upgrading. dest-name should be a defined dest name from the configuration file. For instance, the only configuration file is /etc/opkg.conf. It could look like this:

src/gz snapshots http://downloads.openwrt.org/snapshots/trunk/ar71xx/packages
dest root /
dest ram /tmp
dest test /root
lists_dir ext /var/opkg-lists
option overlay_root /overlay

Then you can run this command:

opkg install seattle_1.0-1_ar71xx.ipk -dest test

opkg remove seattle

These steps were tested using OpenWRT-"Barrier Breaker" (14.07): For building OpenWrt on Debian, you need to install these packages:

apt-get install git subversion g++ libncurses5-dev gawk zlib1g-dev build-essential gettext unzip file

Now build OpenWrt:

git clone git://git.openwrt.org/14.07/openwrt.git
cd openwrt

./scripts/feeds update -a
./scripts/feeds install -a

git clone https://github.com/XuefengHuang/seattle-package.git
mv seattle-package seattle
cp -rf seattle/ package/
rm -rf seattle/

make defconfig
make menuconfig

At this point select the appropiate "Target System" and "Target Profile" depending on what target chipset/router you want to build for. Also mark the Seattle package under "Network". You also need to mark the dependencies, such as python, libpthread...

Now compile/build everything:

make

The images and all *.ipk packages are now inside the bin/ folder. You can install the Seattle .ipk using "opkg install " on the router.

For details please check the OpenWRT documentation.