In this tutorial, you’ll learn how to compile custom ROM of your choice for your device! Yes, it’s quite easy if you have messed your hands on Linux. You can compile any rom of your choice if you can grab sources from the Github and your device, vendor tree, and kernel source.
READ THIS BEFORE YOU MOVE FURTHER!
This guide is for those who at least have some basic knowledge of using Github and any Linux because you’ll need to visit Github most of the times for solving errors, checking commits and all you’ll have is a terminal! You can use the GUI based Linux distros, but I love doing it on the terminal to compile custom ROM.
DON’T START COMPILING IF YOU HAVE NO IDEA ABOUT BASIC STUFF OF LINUX!
THINGS NEEDED TO COMPILE CUSTOM ROM
- Ubuntu 16.04 server / PC with Ubuntu 16.04. Make sure it is powerful enough to handle tasks.
- Device tree, Vendor tree and Kernel source of your device. (You can find it on Github/XDA).
- Source of the custom ROM which you want to compile.
- Little Brain.
You’ll need around 100-300GB free space, super fast internet. Don’t do this on your old pc with slow internet.
Once You have grabbed your trees and sources, you can start the initial setup.
SETTING UP THE ENVIRONMENT
You have to install the tools which are required for making a custom rom! You can simply copy paste the code given below in the terminal to setup the environment.
sudo apt-get install openjdk-8-jdk
sudo apt-get update && sudo apt-get install git-core gnupg flex bison gperf libsdl1.2-dev libesd0-dev libwxgtk2.8-dev squashfs-tools build-essential zip curl libncurses5-dev zlib1g-dev openjdk-8-jre openjdk-8-jdk pngcrush schedtool libxml2 libxml2-utils xsltproc lzop libc6-dev schedtool g++-multilib lib32z1-dev lib32ncurses5-dev lib32readline-gplv2-dev gcc-multilib maven tmux screen w3m ncftp unzip repo bison make bc pngquant
SETTING UP REPO
You’ll need to setup repo for using it. For this, you have to make path ‘bin,’ download repo there and then you have to give it permissions.
mkdir ~/bin PATH=~/bin:$PATH curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo chmod a+x ~/bin/repo
MAKING THE DIRECTORY FOR YOUR CUSTOM ROM
Now you have to make a folder where you’ll store the files for your rom. In this tutorial, I’m making Lineage, so I have named it Lineage.
mkdir lineage cd lineage
GETTING THE ROM SOURCE TO COMPILE CUSTOM ROM
If you are familiar with Git and Repo, then you’ll be able to understand the next step.
repo init -u git://github.com/LineageOS/android.git -b cm-14.1
You can get any ROM source and init the repo, in my case I’m using LineageOS.
You can try some other roms like Resurrection Remix, CrDroid, AEX, etc.
Now sync the repo
Now grab a cup of coffee because it’ll take a long time depending on the speed of your internet connection if you are familiar with repo then use some tweaks like -c, -f, –no-tags to decrease the time. It takes around 20-30 minutes on my server.
CLONING THE STUFF ON YOUR DEVICE
Now you have to clone your device tree, vendor tree and kernel source from Github.
You have to clone like this – git clone *git-url-here* -b *branch* folder/folder/folder
This is how I clone for my device; you can get a better idea with this.
git clone https://github.com/sweetie2205/android_device_motorola_kinzie.git -b lineage-14.1-kinzie device/motorola/kinzie
git clone https://github.com/sweetie2205/proprietary_vendor_motorola.git -b lineage-14.1 vendor/motorola/kinzie
git clone https://github.com/sweetie2205/kernel_motorola_msm8992.git -b lineage-14.1 kernel/motorola/msm8992
START THE COMPILATION
Start the compilation by using commands –
source build/envsetup.sh breakfast kinzie
(Change kinzie to your device code name)
Now grab a book to read, because it’ll take hours to compile the rom! You may see some errors, comment the error below and we will help you to find the solution.
You’ll get the flashable zip after the compilation is finished, and then you can flash it on your phone with a custom recovery like TWRP.