Android/Building: Difference between revisions
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Revision as of 11:17, 16 July 2014
How to build an Android image for XO-4.
We provide in this directory changes to the Android 4.3.1 source so that Android can be built for the XO-4 laptop, and then merged with an OLPC OS build to create a dual-boot image.
Ingredients
- a well connected development system,
- about 20 GB of download capability,
Method
- follow the "Downloading the Source" guide to install Repo,
- use Repo to download the Android source,
$ repo init -u https://android.googlesource.com/platform/manifest -b android-4.3.1_r1 $ repo sync
- in the same working directory, expand our file xo4-android-source-release-20131220.tar.gz and merge the changes,
- start the build:
$ . build/envsetup.sh $ lunch 13 $ make -j8
- ensure you have a copy of the OLPC OS Linux, Sugar and Gnome build file, e.g. 32013o4.zd,
- edit mkzd.sh to match file names,
- prepare a .zd file for the XO-4:
$ cd vendor/olpc/xo4/mkzd $ ./mkzd.sh
Alternative Method
To merge an already published Android build with an already published OLPC OS derived build:
- download the system.img, ramdisk.img, and kernel files from the Android build directory,
- download the build derived from OLPC OS, e.g. 32013xx4.zd or 4_0b125.zd,
- download the mkzd.sh tool, and edit it to match file names,
- run mkzd.sh
Source code
source code for building Android is a combination of 4 parts.
- OLPC Android kernel for XO4 Android/Kernel, you can also download kernel binary form device/olpc/xo4-kernel git repository
- source code from google AOSP project branch "android-4.3.1_r1". "Downloading the Source" guide
- OLPC patches for AOSP project.
frameworks/base
|
git repository |
frameworks/av
|
git repository |
frameworks/native
|
git repository |
system/core
|
git repository |
hardware/libhardware
|
git repository |
hardware/libhardware_legacy
|
git repository |
build
|
git repository |
- source code from vendor, Marvell and OLPC
vendor/marvell/generic
|
git repository |
vendor/marvell/external
|
git repository |
vendor/olpc/xo4
|
git repository |
device/olpc/xo4
|
git repository |
device/olpc/xo4-kernel
|
git repository |