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✦✦✦ [GUIDE] Build LineageOS ✦ How To use Github ✦✦✦

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By FSadino, Forum Moderator on 6th February 2017, 02:26 AM
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How-to Build LineageOS



Introduction


These instructions will hopefully assist you to start with a stock device, unlock the bootloader (if necessary), and then download the required tools as well as the very latest source code for LineageOS (based on Google’s Android operating system) for your device. Using these, you can build both LineageOS and LineageOS Recovery image from source code, and then install them both to your device.

It is difficult to say how much experience is necessary to follow these instructions. While this guide is certainly not for the very very very uninitiated, these steps shouldn’t require a PhD in software development either. Some readers will have no difficulty and breeze through the steps easily. Others may struggle over the most basic operation. Because people’s experiences, backgrounds, and intuitions differ, it may be a good idea to read through just to ascertain whether you feel comfortable or are getting over your head.

Remember, you assume all risk of trying this, but you will reap the rewards! It’s pretty satisfying to boot into a fresh operating system you baked at home . And once you’re an Android-building ninja, there will be no more need to wait for “nightly” builds from anyone. You will have at your fingertips the skills to build a full operating system from code to a running device, whenever you want. Where you go from there– maybe you’ll add a feature, fix a bug, add a translation, or use what you’ve learned to build a new app or port to a new device– or maybe you’ll never build again– it’s all really up to you.





What you’ll need

* A device (supported by LineageOS)
* A relatively recent 64-bit computer (Linux, OS X, or Windows) with a reasonable amount of RAM and about 100 GB of free storage (more if you enable ccache or build for multiple devices). The less RAM you have, the longer the build will take (aim for 8 GB or more). Using SSDs results in considerably faster build times than traditional hard drives.
* A USB cable compatible with the OnePlus One (typically micro USB)
* A decent internet connection & reliable electricity
* Some familiarity with basic Android operation and terminology. It would help if you’ve installed custom roms on other devices and are familiar with recovery. It may also be useful to know some basic command line concepts such as cd for “change directory”, the concept of directory hierarchies, that in Linux they are separated by /. etc.



Summary

1. Install SDK
2. Install build packages
3. Java
4. Create the directories
5. Install the repo command
6. Initialize the LineageOS source repository
7. Download the source code
8.Prepare the device-specific code
9. Extract proprietary blobs
10. Turn on caching to speed up build
11. Configure jack
12. Start the build
13. Install the build




Build LineageOS and LineageOS Recovery




1. Install SDK

If you haven’t previously installed adb and fastboot, you can download them from Google. Extract it using:
Code:
unzip platform-tools-latest-linux.zip -d ~
Now we have to add adb and fastboot to our path. Open ~/.profile and add the following:

Code:
# add Android SDK platform tools to path
if [ -d "$HOME/platform-tools" ] ; then
    PATH="$HOME/platform-tools:$PATH"
fi
Then, run this to update your environment.
Code:
source ~/.profile


2. Install build packages

Several packages are needed to build LineageOS. You can install these using your distribution’s package manager.

You’ll need:

Code:
bc bison build-essential curl flex g++-multilib gcc-multilib git gnupg gperf imagemagick lib32ncurses5-dev
lib32readline-gplv2-dev lib32z1-dev libesd0-dev liblz4-tool libncurses5-dev libsdl1.2-dev libwxgtk2.8-dev
libxml2 libxml2-utils lzop pngcrush schedtool squashfs-tools xsltproc zip zlib1g-dev
For Ubuntu 15.10 (wily) and newer, substitute:

lib32-readline-gplv2-dev → lib32readline6-dev

For Ubuntu 16.04 (xenial) and newer, substitute:

libwxgtk2.8-dev → libwxgtk3.0-dev



3. Java

Different versions of LineageOS require different JDK (Java Development Kit) versions.

LineageOS 11.0-13.0: OpenJDK 1.7 (install openjdk-7-jdk)*
LineageOS 14.1: OpenJDK 1.8 (install openjdk-8-jdk)

* Ubuntu 16.04 and newer do not have OpenJDK 1.7 in the standard package repositories. See Ask Ubuntu question How do I install openjdk 7 on Ubuntu 16.04 or higher Note that the suggestion to use PPA openjdk-r is outdated (the PPA has never updated their offering of openjdk-7-jdk, so it lacks security fixes); skip that answer even if it is the most upvoted.



4. Create the directories

You’ll need to set up some directories in your build environment.

To create them:

Code:
$ mkdir -p ~/bin
$ mkdir -p ~/android/system


5. Install the repo command

Enter the following to download the repo binary and make it executable (runnable):

Code:
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
Put the ~/bin directory in your path of execution

In recent versions of Ubuntu, ~/bin should already be in your PATH. You can check this by opening ~/.profile with a text editor and verifying the following code exists (add it if it is missing):

Code:
# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi
Then, use this to update your environment.

Code:
source ~/.profile


6. Initialise the LineageOS source repository

Enter the following to initialize the repository:

Code:
$ cd ~/android/system
$ repo init -u https://github.com/LineageOS/android.git -b cm-14.1


7. Download the source code

To start the download of the source code to your computer:

Code:
$ repo sync
The Lineage manifests include a sensible default configuration for repo, which we strongly suggest you use (i.e. don’t add any options to sync). For reference, our default values are -j 4 and -c. The -j 4 part means that there will be four simultaneous threads/connections. If you experience problems syncing, you can lower this to -j 3 or -j 2. -c will ask repo to pull in only the current branch, instead of the entire LineageOS history.



8. Prepare the device-specific code

After the source downloads, ensure you’re in the root of the source code (cd ~/android/system), then type:
You have to change DEVICE with the codename of your device (for example: Oneplus ONE codename is bacon)

Code:
$ source build/envsetup.sh
$ breakfast "DEVICE"
This will download your device’s device specific configuration and kernel.

Important: Some maintainers require a vendor directory to be populated before breakfast will succeed. If you receive an error here about vendor makefiles, jump down to Extract proprietary blobs. The first portion of breakfast should have succeded, and after completing you can rerun breakfast



9. Extract proprietary blobs

Now ensure your device is connected to your computer via the USB cable, with ADB and root enabled, and that you are in the ~/android/system/device/your_device/codename folder. Then run the extract-files.sh script:

Code:
$ ./extract-files.sh
The blobs should be pulled into the ~/android/system/vendor/your_device folder. If you see “command not found” errors, adb may need to be placed in ~/bin.



10. Turn on caching to speed up build


You can speed up subsequent builds by running:

Code:
$ export USE_CCACHE=1
And adding that line to your ~/.bashrc file. Then, specify the maximum amount of disk space you want cache to use by typing this from the top of your Android tree:

Code:
$ prebuilts/misc/linux-x86/ccache/ccache -M 50G
Where 50G corresponds to 50GB of cache. This needs to be run once. Anywhere from 25GB-100GB will result in very noticeably increased build speeds (for instance, a typical 1hr build time can be reduced to 20min). If you’re only building for one device, 25GB-50GB is fine. If you plan to build for several devices that do not share the same kernel source, aim for 75GB-100GB. This space will be permanently occupied on your drive, so take this into consideration. See more information about ccache on Google’s Android build environment initialization page.



11. Configure jack

Jack is the new Java compiler used from Lineage 14. It is known to run out of memory

Simple fix is to run this command:

Code:
$ export JACK_SERVER_VM_ARGUMENTS="-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx4096m"
Adding that command to your ~/.bashrc file will automatically configure Jack to allocate a sufficient amount of memory.
If this doesn't help, you can reduce the number of Jacks to 1 in config.properties

$HOME/.jack-server/config.properties
jack.server.max-service=1



12. Start the build

Time to start building! Now, type:

Code:
$ croot
$ brunch device
Remember, device is the codename for your device

The build should begin.



13. Install the build

Assuming the build completed without errors (it will be obvious when it finishes), type the following in the terminal window the build ran in:

Code:
$ cd $OUT
There you’ll find all the files that were created. The two files we’re interested in are:

recovery.img, which is the LineageOS recovery image.
lineage-14.1-build_date-UNOFFICIAL-device.zip, which is the LineageOS installer package.





Success! So… what’s next?


You’ve done it! Welcome to the elite club of self-builders. You’ve built your operating system from scratch, from the ground up. You are the master/mistress of your domain… and hopefully you’ve learned a bit on the way and had some fun too.
Now, what to do next? You can jump to next section of this guide to understand how Github works and how to pick some commits from other developers/teams to improve your custom ROM



This guide was taken from Official LineageOS wiki and all credits goes to LineageOS Maintainers
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6th February 2017, 06:35 AM |#2  
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What is Github and how to use it



GitHub is a code hosting platform for version control and collaboration. It lets you and others work together on projects from anywhere. It is a powerful tool with many features available and here i´m going to talk about how you can use it to help you build and customize your "Custom ROM"




Summary

1. Repositories
2. How to add/remove repositories
3. How to add/remove remotes
4. Repository Fork





1. Repositories


Now that you have built custom lineage from source to your device, you can explore deeper and see how things work and change them according to your needs.
First we are going to se what is inside .repo folder

Code:
cd ~/working_dir/.repo
ls
It will show you something similar to this:



Inside the .repo folder are the necessary "manifest files" that tell the repo sync command what to include or remove from our project when synchronizing with the source

Open manifest.xml

Code:
 gedit ~/working_dir/.repo/manifest.xml
Inside that file you have all information about which repositories belongs to source. These are the base repositories to build LineageOS.
Inside ~/working_dir/.repo/local_manifests/roomservice.xml you can see the repositories needed to build for your specific device. This file is created after breakfast device step and includes, besides others, device tree and kernel.





2. How to add/remove repositories


Lets take a look at how we use roomservice.xml to add/remove repo's from our project, i will use Oneplus ONE device tree for example

Code:
 <project name="LineageOS/android_device_oneplus_bacon" path="device/oneplus/bacon" remote="github" revision="cm-14.1" />
* project name="LineageOS/android_device_oneplus_bacon Name of repository (without https://github.com)
* path="device/oneplus/bacon" Here is where the files will reside in our working directory
* remote="github" Is the for remote we are using, in this case is github (see below how to add/remove remotes to your project)
* revision="cm-14.1" Revision is the branch we want to sync

Image:






3. How to add/remove remotes


Code:
<remote fetch="https://github.com" name="github" />
* remote fetch="https://github.com Url for remote you want to add to your project (in this case, we are working with github)

* name="github" This is the name for remote





Now that you understand the concept of repository, you can "fork" one and start making your
changes and keep it up to date with LineageOS source. For that, you need a Github Account.





4. Repository Fork



In this example, i will fork Oneplus ONE device tree

1. Create Github Account

2. Go to https://github.com/LineageOS/android..._oneplus_bacon and tap on Fork button. After that you can see that repository on you Github account

Image:



3. Now that you have "forked" one repository, you need to edit ~/working_dir/.repo/local_manifests/roomservice.xml and change the default location to your location on your github.[/SIZE]

Image:





This is the basic steps you need to understand how to use Github to keep your code saved and updated. On next section, i will tell you how use Git so you can work on your project and start to pick some cool commits from others projects.
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1st March 2017, 02:42 PM |#5  
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Hello ,

Thanks for your tutorial. It was very well explained.

I have a question in the step: "Prepare the device-specific code".

The last available branche of my device at https://github.com/LineageOS/android...x/tree/cm-13.0, is the cm-13.0 version,

Should I tell which of the options on the device?

$ Source build / envsetup.sh
$ Breakfast "[COLOR =" Red] Samsung Galaxy Note 4 (Exynos) or treltexx [/ COLOR]

Another question: since the last branche is from cm-13.0, if I follow your tutorial, will it compile a, lineage 14.1 rom? Or CYanogenmod 13.0?

Thank you
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2nd March 2017, 12:23 AM |#6  
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Quote:
Originally Posted by John Jefferson

Hello ,

Thanks for your tutorial. It was very well explained.

I have a question in the step: "Prepare the device-specific code".

The last available branche of my device at https://github.com/LineageOS/android...x/tree/cm-13.0, is the cm-13.0 version,

Should I tell which of the options on the device?

$ Source build / envsetup.sh
$ Breakfast "[COLOR =" Red] Samsung Galaxy Note 4 (Exynos) or treltexx [/ COLOR]

Another question: since the last branche is from cm-13.0, if I follow your tutorial, will it compile a, lineage 14.1 rom? Or CYanogenmod 13.0?

Thank you

Since your device tree doesn't have 14.1 branch you have to sync Lineage 13.0 branch

Code:
repo init -u https://github.com/LineageOS/android.git -b cm-13.0
After that you have to sync your especific device repos

Code:
$ source build/envsetup.sh
$ breakfast treltexx
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2nd March 2017, 11:37 PM |#7  
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A3 2017
Hi , I have Galaxy A3 2017 I got to point of breakfast and I cound download files for my phone. What I have to do if I want to have Lineage OS Nuggat in my phone. I hate original rom :-{

breakfast a3y17lte
including vendor/cm/vendorsetup.sh
build/core/product_config.mk:249: *** Can not locate config makefile for product "lineage_a3y17lte". Stop.
build/core/product_config.mk:249: *** Can not locate config makefile for product "cm_a3y17lte". Stop.
build/core/product_config.mk:249: *** Can not locate config makefile for product "lineage_a3y17lte". Stop.
Device a3y17lte not found. Attempting to retrieve device repository from LineageOS Github
Repository for a3y17lte not found in the LineageOS Github repository list. If this is in error, you may need to manually add it to your local_manifests/roomservice.xml.
build/core/product_config.mk:249: *** Can not locate config makefile for product "lineage_a3y17lte". Stop.
build/core/product_config.mk:249: *** Can not locate config makefile for product "lineage_a3y17lte". Stop.

** Don't have a product spec for: 'lineage_a3y17lte'
** Do you have the right repo manifest?

Is that mean that I have to wait for support from LineageOS dvlpr team <?
Roman
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3rd March 2017, 12:13 AM |#8  
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Quote:
Originally Posted by roman01110


** Don't have a product spec for: 'lineage_a3y17lte'
** Do you have the right repo manifest?

Is that mean that I have to wait for support from LineageOS dvlpr team <?
Roman

Yes
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11th March 2017, 12:48 AM |#9  
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Thanks for the great post! I have two questions to ask:
1. How to change LINEAGE_VERSION? Currently when performing brunch I've got

Code:
LINEAGE_VERSION=14.1-20170311-UNOFFICIAL-oneplus3
and I wish to change it to
Code:
LINEAGE_VERSION=14.1-20170311-HAZUKI-oneplus3
to distinguish my personal modified build.

2. When I wish to sync again to obtain latest commits, how far should I go back? Is performing "repo sync" and then "brunch oneplus3" already good enough? Do I need to perform "make clean" or something similar?

Thanks in advance!
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13th March 2017, 02:24 AM |#10  
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I'm trying to build this for my galaxy s5 and I'm using that same guide to the letter and I'm just getting errors. And all those packages listed in op don't work either. I also get an error when extracting proprietary blobs. The extracting isn't the error it's that all the files aren't found in source code at all?!? I'm splitting bloody atoms trying to figure this crap out. Any help at all??
13th March 2017, 02:32 AM |#11  
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Quote:
Originally Posted by Hazuki Amamiya

Thanks for the great post! I have two questions to ask:
1. How to change LINEAGE_VERSION? Currently when performing brunch I've got

Code:
LINEAGE_VERSION=14.1-20170311-UNOFFICIAL-oneplus3
and I wish to change it to
Code:
LINEAGE_VERSION=14.1-20170311-HAZUKI-oneplus3
to distinguish my personal modified build.

2. When I wish to sync again to obtain latest commits, how far should I go back? Is performing "repo sync" and then "brunch oneplus3" already good enough? Do I need to perform "make clean" or something similar?

Thanks in advance!

1. In order to add some code to your build, you have to get familiar with git/GitHub. I'm preparing my next chapter to talk about it

2. Yes, you have to "make clean" everytime before build

Quote:
Originally Posted by thatsupnow

I'm trying to build this for my galaxy s5 and I'm using that same guide to the letter and I'm just getting errors. And all those packages listed in op don't work either. I also get an error when extracting proprietary blobs. The extracting isn't the error it's that all the files aren't found in source code at all?!? I'm splitting bloody atoms trying to figure this crap out. Any help at all??

You have to show all your errors and all your steps in order to get help!
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