Build an Android image for Orange Pi 4 with Docker

The Orange Pi 4 is a single board computer with the Rockchip RK3399. You can download the Android image from the official page, but if you want to customize it, you need to build the image yourself.

Required environment

--100GB or more free storage space --Docker environment

• (The manual tells you to install the JDK and dependencies on Ubuntu 14.04, but I don't think many people are currently using Ubuntu 14.04 natively, so I've put together a build environment in Docker.) * I'm using Ubuntu 20.04 as my Docker host.

** Reference: My development environment ** Ryzen 3700X / 32GB RAM It may depend on the -jN option of make, but it seems that it consumes about 10GB of memory during the build.

procedure

1. From http://www.orangepi.org/downloadresources/ Download ** Orange Pi 4B / Android Source Code **. It's best to download from countries other than China with Google Drive. The size is 16GB.

2. Extract the source code Zip file Extract the dropped Android code source.zip to a suitable location.

• (From here onward, the contents of the Chinese PDF "7, Android compilation environment construction" in the expanded file and the environment are replaced with Docker.) *

3. Combine / expand tar.gzaX Where there is rk3399-android-8.1.tar.gz *

   $ mkdir OrangePi_4
   $ cat rk3399-android-8.1.tar.gz* > rk3399-android-8.1.tar.gz
   $ tar xvf rk3399-android-8.1.tar.gz -C OrangePi_4
   

4. Build!

   $ cd OrangePi_4/rk3399-android-8.1/
   $ docker run --rm -v $(pwd):/workdir aquahika/android-buildenv-orangepi4 ./make.sh -F -M -u
   

In my environment it took about an hour to finish the build

5. Deliverables Located at OrangePi_4 / rk3399-android-8.1 / rockdev / Image-rk3399_mid

   $ cd rockdev/Image-rk3399_mid
   $ ls
   boot.img           misc.img       pcba_small_misc.img  resource.img  uboot.img
   kernel.img         oem.img        pcba_whole_misc.img  system.img    update.img
   MiniLoaderAll.bin  parameter.txt  recovery.img         trust.img     vendor.img
   

I don't actually write it because I don't have OrangePi4 yet, but the build itself seems to be done well.

Parallel build settings for multi-core

The 11th line of OrangePi_4 / rk3399-android-8.1 / make.sh says MAKE = "make -j8", and it seems to build in parallel with 8 threads by default. My Ryzen 7 3700X has 8 cores and 16 threads, so I rewrote it to MAKE =" make -j16 ".

• There is also a -jN option the theory that it is better to specify the number of cores + 1. However, it feels good to see all the cores being fully used on the system monitor (laughs), so I set the maximum number of threads.

Build environment Docker image / Dockerfile

Issue / PR is welcome.

• https://github.com/aquahika/android-buildenv-orangepi4
• https://hub.docker.com/r/aquahika/android-buildenv-orangepi4