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buildroot

Basics

Checkout this repository and run Run.sh.

git clone https://github.com/Doodle3D/openwrt-buildroot.git
$ ./Run.sh

Background

This buildroot is a sharable build environment to build OpenWRT images with the custom Doodle3D WiFi-Box configuration and packages. The resulting image can be flashed to a OpenWRT compatible device, currently specifically the TP-Link MR3020.
Instead of contaminating your machine with lots of build dependencies, which vary per operating system, we create a separate virtual machine using Docker (Understanding docker).

We created Run.sh to automate the most common use case; building an image and flashing this to a WiFi-Box.

  1. The Run.sh script will clone the Doodle3D WiFi-Box packages, so these can be developed locally.
  2. A container is created from our buildroot image. This image is comparable to a .img file used with VirtualBox or an operating system installation disk. We've already uploaded a ready made buildroot image, but you can also build it yourself, see Image development.
  3. In this buildroot container, our Build.sh is executed. This will use the local packages (through a shared volume), build the actual OpenWRT image and copy the image to the shared bin volume.
  4. Flash this OpenWRT image it to an OpenWRT device that connected to your computer.

Image development

Clone this repository

$ git clone https://github.com/Doodle3D/openwrt-buildroot.git
$ cd openwrt-buildroot

Build image from Dockerfile (normally this is downloaded from Docker Hub)
This is done according to our Dockerfile.

$ docker build -t doodle3d/openwrt-buildroot .

Run as interactive docker container.
This enables you to access the buildroot container and make changes.

$ docker run -t -i -v "$PWD/bin:/home/openwrt/shared/bin" -v "$PWD/customfeeds:/home/openwrt/shared/customfeeds" -u openwrt --name openwrt-buildroot doodle3d/openwrt-buildroot bash

Common Docker commands

user@container: $ exit # exit container
$ docker ps # show running processes
$ docker ps -a -s # show all processes with size
$ docker start <NAME> # (re)start container
$ docker attach <NAME> # attach to container

Using Docker through Kitematic on OS X

Open Kitematic (this starts the Virtual machine with the docker daemon)
click open terminal button
scroll upwards in this terminal window
copy line and rewrite to environment variable such as:

$ export DOCKER_HOST=tcp://192.168.99.100:2376 DOCKER_CERT_PATH=~/.docker/machine/machines/dev DOCKER_TLS_VERIFY=1

Include this in your ~/.bash_profile.

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