SDK Download and Build

System requirements

Listed below are the recommended requirements for downloading and building the SDK:

• CPU: x86_64 or better family processor
• Memory: 8GB or higher
• Disk: 10GB free hard disk space
• OS: Ubuntu 14.04 (tested) or higher
• Network: internet connection

Linux host setup

Ubuntu 14.04

HINT: later version should also work.

Install prerequisites

$ sudo dpkg --add-architecture i386
$ sudo apt-get update
$ sudo apt-get install git git-core u-boot-tools qemu qemu-user-static debootstrap lib32z1 lib32ncurses5 libc6:i386 libstdc++6:i386 gawk

• dpkg --add-architecture i386: support 32bit architecture
• apt-get update: retrieve new lists of packages
• git git-core: manage source code
• u-boot-tools: build kernel image
• qemu qemu-user-static: emulator for arm on host CPU
• debootstrap: for installing a Debian base system
• lib32z1 lib32ncurses5 libc6:i386 libstdc++6:i386: for running 32bit tools
• gawk: GNU Awk

Sudo without password

$ sudo visudo

Add this line at the end (change “james” to your username):

james ALL=(ALL) NOPASSWD: ALL

Ctrl-X to leave, save your changes, and you're done!

Downloading

SDK

The SDK is available on github.

We use Repo manage Git repositories. Clone Repo from android Git repositories or other mirrors and install it.
Chinese developers can install Repo follow these steps:

$ git clone http://mirrors.ustc.edu.cn/aosp/git-repo.git ~/.bin/repo
$ echo "export PATH=~/.bin/repo:$PATH" >> ~/.bashrc
$ source ~/.bashrc

For Lindenis V5, download the SDK via:

$ repo init -u https://github.com/lindenis-org/manifest.git -b v5
$ repo sync

The Download time depends on your network connection speed. After finish the download, you should get below directories:

build  build.sh  debian  device  kernel  tools  u-boot

Start a branch for local workspace:

$ repo start v5 --all

Before building the source, you have to download a basic rootfs and toolchains.

Basic rootfs

Download the basic rootfs from FTP server with user 'ftp' (password: lindeni) and store to debian directory.

• stretch-alip.tar.gz

Toolchain

Download the toolchain from FTP server with user 'ftp' (password: lindeni) and store to tools/build/toolchain directory (create directory if not exist).

• gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabi.tar.xz
• gcc-linaro-arm.tar.xz

Building

Setup env

For Lindenis V5 SBC:

$ source build/envsetup.sh
All available platforms:
   0. eagle(Allwinner-V5,sun8iw12p1,arm)
   1. petrel(Allwinner-H3,sun8iw7p1,arm)
   2. cuckoo(Allwinner-V3,sun8iw8p1,arm)
Choice: 0
All available OS:
   0. buildroot
   1. debian
Choice: 1
   0. allwinner-dvb
   1. lindeni-v5
Choice: 1

Build source

• Build kernel and rootfs

$ ./build.sh

Now you can build the OS image. You can also build component separately for debugging as follow.

• Build kernel only

$ ./build/mk-kernel.sh

• Build rootfs only (debian)

$ ./build/mk-debian.sh

• Build U-Boot

$ ./build/mk-u-boot.sh

Build image

For MicroSD Card image:

$ ./build.sh flat-fw

For eMMC image:

$ ./build.sh pack

Installation

• Writing an image to the SD card
• Writing_an_image_to_the_eMMC