diff --git a/i2c-tools-3.1.1.tar.bz2 b/i2c-tools-3.1.1.tar.bz2
new file mode 100644
index 0000000..0750e7a
--- /dev/null
+++ b/i2c-tools-3.1.1.tar.bz2
Binary files differ
diff --git a/i2ctools_build.sh b/i2ctools_build.sh
new file mode 100755
index 0000000..b2f0bcb
--- /dev/null
+++ b/i2ctools_build.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+source ../../a5s_linux_sdk/ambarella/build/env/CodeSourcery.env
+PATH=$PATH:$ARM_LINUX_TOOLCHAIN_DIR/bin
+
+TOP=`pwd`
+
+I2CTOOLS=i2c-tools-3.1.1
+I2CTOOLS_SOURCE=i2c-tools-3.1.1.tar.bz2
+
+TOP=`pwd`
+
+rm -rf dist
+mkdir -p dist/usr
+rm -rf build
+mkdir build
+pushd build
+tar jxfv ../$I2CTOOLS_SOURCE
+cd $I2CTOOLS
+
+make CC=arm-none-linux-gnueabi-gcc
+make DESTDIR=${TOP}/dist prefix=/usr install
+popd
+
+rm -rf fakeroot
+mkdir -p fakeroot/usr/bin fakeroot/usr/sbin
+cp -d -r dist/usr/bin/* fakeroot/usr/bin
+cp -d -r dist/usr/sbin/* fakeroot/usr/sbin
+
+tar cjvf i2ctools.tar.bz2 fakeroot
+cp i2ctools.tar.bz2 ../../a5s_linux_sdk/ambarella/boards/dropcam/rootfs
+