How to build AOSP Marshmallow for Nexus 5 including its kernel

it describes how to build marshmallow mr2 for the Nexus 5 including kernel-3.4 and provides few patches.

Find right version

setting up a right version of Android is the key to successful build the android source.

I chose m_mr2 for my Nexus 5 with no paticular reason :) and MOB31E seems right choice which I can see rigth version information as follows on google groups:

Android version Build Branch Version Supported devices
MOB31E, android-6.0.1_r66, Nexus 5, Nexus 6, Nexus 9 (volantisg)

Kernel version android-6.0.1_r0.124 kernel/msm android-msm-hammerhead-3.4-marshmallow-mr2 Nexus 5 (hammerhead)

Setup sources

android m-mr2

Firstly sync the m_mr2 branch marshmallow-mr2-release

repo init -u https://android.googlesource.com/platform/manifest -b marshmallow-mr2-release
repo sync -j8

and checkout MOB31E, I used reset.

repo start m_mr2 --all
repo forall -c 'pwd;git reset --hard android-6.0.1_r66

kernel

sync and checkout the branch for Nexus5

git clone https://android.googlesource.com/kernel/msm kernel-3.4
cd kernel-3.4
git fetch origin android-msm-hammerhead-3.4-marshmallow-mr2
git checkout -b android-msm-hammerhead-3.4-marshmallow-mr2 origin/android-msm-hammerhead-3.4-marshmallow-mr2

and finally reset the commits

git reset --hard android-6.0.1_r0.124

patching files

I've attached 3 patches as follows:

• build.diff for build/
• device_lge_hammerhead.diff for /device/lge/hammerhead
• kernel.diff for kernel-3.4/ apply them at its directories.

vendor driver files

• download all vendor driver files for MOB31E from google at https://developers.google.com/android/drivers#hammerheadmob31e
• and unzip and execute them, now you have the all patches under vendor
• finally copy vendor to android

cp -r vendor <your android root>/vendor

missing libraries(optional)

TBD

Build

Now you are ready to build, I know you know how to build :)

Flashing

TBD

Special Thanks

Thank you Eunjung for your help :)