SwapnilSoni1999 · November 28, 2017 16:48 · Nov 28, 2017
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+
+
+First of all have a brief look at xda threads about compiling rom from source dont follow all stuff from there tho.. just have a look on those threads specially that jackeagle thread. 
+
+now first what you need :
+    If on local
+   -> Fast internet connection (fast enough to download 50GB rom source without waiting for a day or two xD )
+   -> 4core cpu(or higher)
+   -> 8gb minimum ram 
+   -> Linux (Ubuntu for this guide)
+   -> storage : 80GB + 50 to 100GB (rom source(approx) + Compiling space and ccache)
+   if using ssh or cloud
+ then above specs + more spec wiill be cool.. 
+
+Now what is buildbot ?
+- this guide wont make you developer you can become buildbot which is making rom frrom source with already made sources such as device tree and fixes for such stuff .. inshort total kanging lmao xD... 
+
+
+After installing linux .. Need to setup environment for compiling 
+for that  if on locally then start without sudo -s 
+
+if on ssh(Gcloud) then first type 
+     sudo -s   
+this will let you enter in root... There is a guide on xda how to setup Gcloud for rom deving.. 
+
+now Get yourself fimiliar with Basic Linux... 
+if u donno how to use linux .. then leave reading this post :P
+
+
+now install the required packages >.. just copy and paste the given command 
+
+
+for setting environment 
+
+
+sudo apt-get update && sudo apt-get upgrade 
+
+sudo dpkg --add-architecture i386
+
+sudo apt-get update && sudo apt-get upgrade 
+
+sudo apt-get install bc bison build-essential curl flex g++-multilib gcc-multilib git gnupg gperf lib32ncurses5-dev lib32readline6-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 imagemagick
+
+sudo apt-get update && sudo apt-get upgrade 
+
+sudo add-apt-repository ppa:webupd8team/java
+sudo apt install oracle-java8-installer
+
+you can use openjdk-8-jdk too 
+then , 
+
+sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 /usr/lib/i386-linux-gnu/libGL.so
+
+now .. edit bashrc
+
+nano ~/.bashrc 
+
+and then add given 2 lines at end of bashrc
+
+export PATH=~/bin:$PATH
+export USE_CCACHE=true
+
+then Ctrl+O to save and press enter then Ctrl+X to exit(basic linux ya'know)
+at last ..
+
+
+mkdir ~/bin && curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo && chmod a+x ~/bin/repo
+
+
+
+
+
+
+
+here environment is set.. 
+
+Now make a directory and name it anything accordingly to rom name (lineage for here) 
+
+cd ~/ && mkdir los && cd los
+
+now we have to clone source code .. 
+
+for that in the rom main dir( los in this guide)
+
+
+goto their github page suppose github.com/LineageOS/android for here ... 
+choose the branch .. take Nougat if beginner .. 
+then scroll down read their readme.md then u can see repo init command copy their command and execute .. 
+
+you can see some lines will be shown in therminal and will ask for github username and email .. Just add (this is one time adding of github id fromnext time you will just shown as your id this and username this)
+
+then type 
+  repo sync 
+or 
+  repo sync -c --no-tags --no-clone-bundle --force-sync 
+you will be used to with second one 
+
+
+then wait for some minutes if on ssh server or wait for several hours or days if locally (depends on your internet connection)
+
+
+after source gets sync clone your device tree, vendor blobs, and kernel sources from your lead dev :P .. we are kangers tho xD 
+for that lets learn git a little >>
+
+git clone <url> -b <branch-name> <file-path>
+
+for example for a device
+git clone https://github.com/Username/android_device_vendorname_devicename -b branchname device/vendorname/devicename
+
+eg. for mido 
+git clone https://github.com/TheScarastic/android_device_xiaomi_mido -b cm-14.1 device/xiaomi/mido
+
+
+here consider _ as /
+
+other stuff like git status, cherry-picking , commiting pushing etc .. you have to learn from google.. 
+
+after that clone kernel and vendor blobs as same way.. 
+hint: you can find the required repos in .dependencies file 
+so clone from there ... 
+you can get vendor blobs from TheMuppets or ask your lead dev to give those stuff ... 
+
+now rom other than lineage .. for example ... 
+
+
+for glaze os, aicp or other lineage based roms .. 
+
+most of changes are in device tree ... 
+
+and those files are .. 
+lineage.mk  to -> glaze.mk 
+and change common vendor path in rom-name.mk 
+ like call-inherit... vendor/cm/config/common_full_phone.mk to-> vendor/glaze/common.mk (for glaze os here.. you can check for other official devices on the rom repo ... )
+then change in PRODUCT_NAME from lineage_mido to glaze_mido and some other shits... 
+
+
+for some aosp based roms like JDC and Aex you need to make these achanges along with some additional change like adding AndroidProducts.mk etc.. 
+
+then after clonning 
+
+you have to bringup your device in rom source ..
+
+for that initiate with ... 
+
+./build/envsetup.sh
+
+this will include all build makefiles .. which required for bringup .. 
+
+
+then for your device type
+
+breakfast lineage_mido-userdebug 
+
+
+there are 2 ways to bringup breakfast and lunch 
+eg. lunch aicp_kenzo-userdebug 
+
+then you can see your device info on screen ... 
+if not and saw some errors like romname_devicename not found 
+do you have proper manifest for this deice and etc.. then look for your device tree and correct it ... 
+
+then ... 
+for building type ... 
+
+brunch devicename 
+or 
+make otapackage(for aosp roms such as aosp-caf)
+
+sometimes u need to add like this too 
+brunch nitrogen_kenzo-userdebug 
+to start build ... 
+
+
+after that wait for several hours to get compiled and you can see they will tell you where the rom is stored as .zip in output folder ... 
+Tip: as you go further dont forget to learn gerrit and cherry-picking.. and reading errors .. 
+
+I've found a good group to learn in telegram as @Android_Building ...
+
+Havefun!! keep learning!