Android SDK Emulator: Compile CyanogenMod

How to compile CyanogenMod for the Android Emulator.
This how-to was written for Ubuntu 10.04 & Ubuntu 10.10, Android Emulator r08, CyanogenMod 7.x (Gingerbread), on 2 February 2011.

Prepare the Build Environment
VM中安装Ubuntu请分配足够大小，30GB,JDK先独立安装，之后安装的软件列表中就不需要"sun-java6-jdk"
NOTE: You only need to do these steps the first time you build. If you previously prepared your build environment, skip to Download RomManager.
Install the ADB
Install the Android SDK.
Install the Build Packages
Install using the package manager of your choice:

For 32-bit & 64-bit systems:
git-core gnupg flex bison gperf libsdl1.2-dev libesd0-dev libwxgtk2.6-dev squashfs-tools build-essential zip curl libncurses5-dev zlib1g-dev sun-java6-jdk pngcrush schedtool

For 64-bit only systems:
g++-multilib lib32z1-dev lib32ncurses5-dev lib32readline5-dev gcc-4.3-multilib g++-4.3-multilib
Note: On Ubuntu 10.10, and variants, you need to enable the parter repository to install sun-java6-jdk:
add-apt-repository "deb http://archive.canonical.com/ maverick partner"


Create the Directories
You will need to set up some directories in your build environment.
To create them:

mkdir -p ~/bin
mkdir -p ~/android/system

Install the Repository
Enter the following to download make executable the "repo" binary:

curl https://dl-ssl.google.com/dl/googlesource/git-repo/repo > ~/bin/repo
chmod a+x ~/bin/repo

NOTE: You may need to reboot for these changes to take effect.
Now enter the following to initialize the repository:

cd ~/android/system/
repo init -u git://github.com/CyanogenMod/android.git -b gingerbread
repo sync -j16

Download RomManager
NOTE: This only needs to be done when an update to RomManager is released. If you are-up-to date, you may skip to Building CyanogenMod.
Download ROM Manager which is needed by the build:

cd ~/android/system/vendor/cyanogen/
./get-rommanager

Building CyanogenMod
Check for updates
First, check for updates in the source:

cd ~/android/system/
repo sync

Configure Build
Now, your environment must be configured to build specifically for the Android Emulator. To set up your build environment:

. build/envsetup.sh
lunch cyanogen_generic-eng

Compile
Next, we will build the actual ROM.

mka

重要：在编译前先执行make update-api，在执行mka进行编译，否则会报错，具体原因是CM中添加了新的API

Install
Create a folder called android-9-cyanogen on Your/Android-SDK/platforms/
Copy the contents of Your/Android-SDK/platforms/android-9 into Your/Android-SDK/platforms/android-9-cyanogen
Copy the ramdisk.img system.img and userdata.img file from ~/android/system/out/target/product/generic to Your/Android-SDK/platforms/android-9-cyanogen/images/
Run the Android AVD Manager and select the second Android 2.3 target.

重要：安装上述方法执行后，模拟器黑屏
解决办法:在CM源码中找到kernel-qemu-armv7，位置在~/prebuilt/android-arm/kernel/kernel-qemu-armv7
将它拷贝到SDK相应目录，执行如下命令：
root@ubuntu:~/android-sdks/tools# ./emulator @cm -kernel /root/android-sdks/platforms/android-cm/images/kernel-qemu-armv7