Before starting out the procedure, I would hihgly recommend building it on a high-spec VPS and not on your personal computer. You could try out the free-trial of Google Cloud Platform. The guide will assume you are on a Linux system. Please don’t try building on any other OS

Installing required tools and libraries #

For this I recommend using the scripts from Akhil Narang’s script repo. I personally use a Ubuntu on a build server. So I will execute android_build_env.sh script.

sh setup/android_build_env.sh

Syncing the sources #

You can find the syncing instructions on the LineageOS android repo.

For this you will need to install repo. Run the following commands in your home directory

mkdir ~/bin
PATH=~/bin:$PATH
curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo

Now that you have repo, run the following commands to start syncing the project. Make sure you have enough free space since the download can be ~50GB

mkdir los
cd los
repo init -u git://github.com/LineageOS/android.git -b lineage-16.0 --depth=1

Now you need to add your local manifest

mkdir .repo/local_manifests
wget https://gist.githubusercontent.com/SubhrajyotiSen/a4527f82609f03a8bf4e48e6694ac142/raw/25d2a5e58bbe5734d7a0771bc7ff929043fe2b44/whyred_los.xml -P los/.repo/local_manifests/

Now start syncing the sources

repo sync -cfj8 --current-branch --no-tags --no-clone-bundle --optimized-fetch --prune

Now kindly go to something productive as this might take a while depending on connection speed.

Once it is done, it’s time to start building.

It is always a good idea to setup ccache as this will make the future builds faster

export USE_CCACHE=1
export CCACHE_DIR=~/.cache
prebuilts/misc/linux-x86/ccache/ccache -M 50G

Here I am using 50GB ccache. You can specify the size depending on how much space you have available

. build/envsetup.sh
lunch lineage_whyred-userdeug
make bacon -j8

This will start the build. It can take a few hours depending on the specs of your machine.

If all goes well, you will get a success message and your build should be available in los/out/target/product/whyred/

If you get errors along the way, in most cases a direct Google search should help fix yours error.

Signing your build #

The LineageOS Wiki has detailed steps to Sign your build. So no point in repeating them here.

Building Lineage Recovery #

If you insist on building and using Lineage recovery, here are the steps

. build/envsetup.sh
lunch lineage_whyred-userdebug
make recoveryimage -j8