This is the buildsystem for the OpenWrt Linux distribution.

For AI7688H, please checkout the branch **'AI7688H__chaos_calmer'**.



# About linkit-smart-feed
This branch imported the feeds from Mediatek Labs
https://github.com/AcSiP/linkit-smart-7688-feed


# Build the firmware from sources

This section describes how to build the firmware for LinkIt Smart 7688 and LinkIt Smart 7688 Duo from source codes.


### Host environment
The following operations are performed under a Ubuntu LTS 14.04.3 environment. For a Windows or a Mac OS X host computer, you can install a VM for having the same environment:
* Download Ubuntu 14.04.3 LTS image from [http://www.ubuntu.com](http://www.ubuntu.com)
* Install this image with VirtualBox (http://virtualbox.org) on the host machine. 50GB disk space reserved for the VM is recommanded


### Steps
In the Ubuntu system, open the *Terminal* application and type the following commands:

1. Install prerequisite packages for building the firmware:
    ```
    $ sudo apt-get install git g++ make libncurses5-dev subversion libssl-dev gawk libxml-parser-perl unzip wget python xz-utils
    ```

2. Download OpenWrt CC source codes:
    ```
    $ git clone https://github.com/AcSiP/openwrt.git
    ```
    
3. Checkout this branch:
    ```
    $ cd openwrt
    $ git checkout origin/AI7688H__chaos_calmer
    ```
    
4. Update the feed information of all available packages for building the firmware:
    
    ```
    $ ./scripts/feeds update
    ```
5. Install all packages:
    
    ```
    $ ./scripts/feeds install -a
    ```
6. Prepare the kernel configuration to inform OpenWrt that we want to build an firmware for LinkIt Smart 7688:
    
    ```
    $ make menuconfig
    ```
    * Select the options as below:
        * Target System: `Ralink RT288x/RT3xxx`
        * Subtarget: `MT7688 based boards`
        * Target Profile: `LinkIt7688`
    * Save and exit (**use the deafult config file name without changing it**)
7. Start the compilation process:
    
    ```
    $ make
    ```
8. After the build process completes, the resulted firmware file will be under `bin/ramips/openwrt-ramips-mt7688-LinkIt7688-squashfs-sysupgrade.bin`. Depending on the H/W resources of the host environment, the build process may **take more than 2 hours**.

9. You can use this file to do the firmware upgrade through the Web UI. Or rename it to `lks7688.img` for upgrading through a USB drive.