Building Android Apps on FreeBSD with Jenkins

Caleb Marble



This process took me a lot of trial and error and many tutorials online were almost a decade old, so I decided to write this post. Please load the comments at the end of this post and let me know if this helped you!

When you see a '#' sign before a command, that means the command is expected to be run as a root user. By default FreeBSD does not have the sudo(8) command, so you will need to elevate yourself to root with `su - root`.

If you're following along with a DigitalOcean droplet then sudo(8) is already provided for the freebsd user and you can simply prepend `sudo` to any commands with a '#' sign. If that command is piped to tee(1) then you need to place the sudo before tee (EX `printf 'some text\n' | sudo tee -a /some/file`).

If you want to follow along with this post with a DigitalOcean droplet, you can get a $10 credit here: Full disclosure: this link also helps me out with DigitalOcean credit as well.

Installing Jenkins

pkg install jenkins git-lite bash unzip android-tools-adb
mount -t fdescfs fdesc /dev/fd
mount -t procfs proc /proc
printf 'fdesc /dev/fd fdescfs rw 0 0\n' | tee -a /etc/fstab
printf 'proc  /proc   procfs  rw 0 0\n' | tee -a /etc/fstab
If you're doing this on DigitalOcean you might want to check to see if procfs and fdescfs is already added to /etc/fstab and that the 'noauto' option is not set.
sysrc jenkins_enable="YES"

Installing Linux support

pkg install linux_base-c7
mount /compat/linux/proc
mount /compat/linux/dev/shm
printf 'linprocfs /compat/linux/proc    linprocfs  rw           0 0\n' | tee -a /etc/fstab
printf 'tmpfs     /compat/linux/dev/shm tmpfs      rw,mode=1777 0 0\n' | tee -a /etc/fstab
kldload linux
kldload linux64
sysrc -f /boot/loader.conf linux_load="YES"
sysrc -f /boot/loader.conf linux64_load="YES"

Setting up Jenkins

su - jenkins
mkdir -p "$HOME/secrets"
keytool -genkeypair -keysize 2048 -keyalg RSA -alias jenkins -keystore "$HOME/secrets/keystore"
sysrc jenkins_args="--httpPort=-1 --httpsPort=8443 --httpsKeyStore=secrets/keystore --httpsKeyStorePassword=PASSWORD"
If you are going to use another service to manage certificates instead of Jenkins, you can skip the above two steps.
service jenkins start

Creating a Build Job

Setting environment variables

Installing the Android SDK

Setting up the Environment

printf 'REPO_OS_OVERRIDE=linux; export REPO_OS_OVERRIDE' | tee -a /etc/profile
After making changes to the /etc/profile, you need to logout and log back in for the environment variables to take effect.

Downloading the SDK Tools.

mkdir -p /usr/local/share/android-sdk
chown jenkins:jenkins /usr/local/share/android-sdk
su - jenkins
cd /usr/local/share/android-sdk
./tools/bin/sdkmanager --update
./tools/bin/sdkmanager "build-tools;26.0.0"
./tools/bin/sdkmanager --licenses

You can find which build tools version you need by examining the app/build.gradle file in the Android application folder.

Build Your Android Application

You're done! For questions or comments please click View Comments below.

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