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Building Android SDK Source Code

SDK (Software Development Kit) is a collection of source code and development tools provided for a specific software framework, hardware platform, or operating system, designed to help developers create their own solution more efficiently.

Build Environment

Install Ubuntu on a PC for SDK compilation.

  • Hardware: PC with RAM ≥ 16 GB, CPU cores ≥ 4, Hard Drive ≥ 500GB
  • Software: Ubuntu 22.04, Virtual Machine disk space allocation ≥ 200GB

Configuration and Installation

sudo apt-get update
sudo apt install autoconf bc binfmt-support bison build-essential bzip2
sudo apt install chrpath cmake cpp-aarch64-linux-gnu curl device-tree-compiler diffstat
sudo apt install expat expect expect-dev fakeroot flex
sudo apt install g++ g++-multilib gawk gcc gcc-multilib git gnupg gperf gpgv2 imagemagick
sudo apt install lib32ncurses5-dev lib32readline-dev lib32z1-dev libgmp-dev 
sudo apt install libgucharmap-2-90-dev liblz4-tool libmpc-dev
sudo apt install libncurses5-dev libsdl1.2-dev libssl-dev libwxgtk3.0-gtk3-dev 
sudo apt install libxml2 libxml2-utils live-build lzop
sudo apt install make module-assistant ncurses-dev openjdk-8-jdk 
sudo apt install patchelf pngcrush python2 python-is-python3 python-pip
sudo apt install qemu-user-static rsync schedtool squashfs-tools ssh sudo 
sudo apt install texinfo u-boot-tools unzip
sudo apt install xsltproc yasm zip zlib1g-dev pip
sudo pip install pyelftools
sudo ln -s /usr/bin/python2 /usr/bin/python

Fetch SDK Source Code

Note

1. The SDK cannot be built in a HOST shared directory if using virtual machine as building env.
2. Do NOT build SDK as ROOT user.

1. Download the Android SDK source code and the release_sdk.sh script. Usually, select the file with the latest date suffix.

2. Place the tar.gz package, md5sum file, and release_sdk.sh file in the same directory on the compilation host.

rk-android13.0-*.tar.gz
rk-android13.0-*.md5sum
release_sdk.sh

3. Run the script to restore the SDK source code.

chmod +x ./release_sdk.sh
./release_sdk.sh

K7_RESET_SDK

Full Compilation

1. Enter the code path on the compilation host and execute the following command to configure the compilation target:

./build.sh lunch

Select the configuration file according to the board model and SoC.

Board SoC Configuration File
K1 rk3568 BoardConfig-rk3568-kickpi-k1.mk
K1B rk3568 BoardConfig-rk3568-kickpi-k1b.mk
K3 rk3562 BoardConfig-rk3562-kickpi-k3.mk
K8 rk3588 BoardConfig-rk3588-kickpi-k8.mk

K1 Configuration Example:

./build.sh lunch
will lunch sdk

You're building on Linux
Lunch menu...pick a combo:

1. rk356x
2. rk3588
3. rk3562
Which would you like? [0]: 1

You're building on Linux
Lunch menu...pick a combo:

1. BoardConfig-rk3566-kickpi-tx66.mk
2. BoardConfig-rk3568-kickpi-k1.mk
3. BoardConfig-rk3568-kickpi-k1b.mk
4. BoardConfig.mk
Which would you like? [0]: 2
switching to board: /home/work/rockchip/rk-android13.0/device/rockchip/rk356x/BoardConfig-rk3568-kickpi-k1.mk

2. Full image compilation.

./build.sh -AUCKu

Individual Compilation

  • Compile Multi-screen Recognition Image
./build.sh -UCKAum
  • Compile Uboot Individually
./build.sh -Uu
  • Compile Android Individually
./build.sh -Au
  • Compile Kernel Individually
./build.sh -CKu
  • Configure Kernel defconfig
./build.sh -M

Q&A

  • Android compilation error due to path errors caused by code location changes?

Clear the data first, then recompile.

source build/envsetup.sh
lunch rk3568_t-userdebug
make clean -j32
  • Insufficient compilation space?

The default building job count is currently -j32. Reducing the jobs, add the -J parameter followed by the jobs to the build command.

For example: Change the thread count to 1, -j1
./build.sh -AUCKu -j1