Compile Android source code

First, build the android compiling environment.

(1) install and configure Java 5

1. install Java 6 First (Java 5 is required for Android compilation. This is recommended here)

Open the terminal, run the following command, or use adept/new software manager, where search for "sun-java6-jre" and "sun-java6-jdk" and tag the installation.

Sudo apt-Get install sun-java6-jre
If the space is rich, we recommend that you install a JDK.

Sudo apt-Get install sun-java6-jdk
Tip: During the installation process, you need to answer whether you agree to use the Protocol (the red-blue prompt page in the terminal). Press the tab key to OK, and press enter to install it normally.

2. install Java 5

If it is ubuntu910, update the source when installing Java 5. Method:

Place the following updates at the beginning of the update source.
Update Source: sudo gedit/etc/APT/sources. List
Deb http://cn.archive.ubuntu.com/ubuntu/ jaunty multiverse
Deb http://cn.archive.ubuntu.com/ubuntu/ jaunty-Updates multiverse

 

Sudo apt-Get install sun-java5-jre

Sudo apt-Get install sun-java5-jdk

3. Set the current default Java interpreter and compiler: (skip this step if multiple Java virtual machines are not installed in ubuntu9.10 .)

Sudo Update-alternatives -- config Java
The following figure is displayed after execution:

There are 2 alternatives which provide `java'.

Selection Alternative
----------------------------------------------- 
+        1    /usr/lib/jvm/java-6-openjdk/jre/bin/java
          2    /usr/lib/jvm/java-6-sun/jre/bin/java
*         3    /usr/lib/jvm/java-1.5.0-sun/jre/bin/java
Press enter to keep the default[*], or type selection number:

Enter the number before the row containing "Sun. As shown above, enter 3 and press enter to confirm. (Java 5 needs to be configured to compile Android)

sudo update-alternatives --config javac

The operation is similar to the previous one.

4. Configure Java environment variables:

     sudo gedit /etc/environment

Add the following two lines:

     JAVA_HOME=/usr/lib/jvm/java-1.5.0-sun

     ANDROID_JAVA_HOME=$JAVA_HOME

     CLASSPATH=.:/usr/lib/jvm/java-1.5.0-sun/lib

To make the configuration take effect, you must restart the machine or enter

     . /etc/environment

5. Configure the JVM priority: (skip this step if multiple Java virtual machines are not installed in ubuntu9.10 .)

     sudo gedit /etc/jvm

Convert

     /usr/lib/jvm/java-1.5.0-sun

Enter this line at the top of the configuration block.

 

(2) install cross-compiler and other compilation tools

 

1.1.1 flex

Flex is a tool for generating scanners.

# Sudo apt-Get install flex

1.1.2 bison

Bison is a general-purpose Parser Generator.

# Sudo apt-Get install bison

 

1.1.3 gperf

Gperf is a program that generates perfect hash functions.

# Sudo apt-Get install gperf

 

1.1.4 libsdl-Dev

SDL is a library that allows programs portable low level access to a video framebuffer, audio output, mouse, and keyboard.

# Sudo apt-Get install libsdl-Dev

1.1.5 libesd0-devl

This program is designed to mix together several digitized audio streams for playback by a single device.

# Sudo apt-Get install libesd0-dev

 

1.1.6 libwxgtk2.6-Dev

This package provides files needed to compile wxWidgets programs.

# Sudo apt-Get install libwxgtk2.6-Dev

 

1.1.7 zlib1g-dev

Zlib is a library implementing the deflate compression method.

# Sudo apt-Get install zlib1g-dev

 

1.1.8 build-essential

This package contains an informational list of packages which are considered essential for building Debian packages.

# Sudo apt-Get install build-essential

 

1.1.9 libncurses5-dev

This package contains the header files, static libraries and symbolic links.

# Sudo apt-Get install libncurses5-dev

1.1.10 uboot-mkimage

This package contains the mkimage utility.

# Sudo apt-Get install uboot-mkimage

 

1.2 cross Tool

1. Copy the cross tool package to/usr/local/ARM

If the arm directory is not exist in host PC then create the Directory

# Mkdir/usr/local/ARM

# Cp 4.3.1-eabi-armv6-20080707.tar.bz2/usr/local/ARM

2. Unzip the code using tar command

# Tar xvjf 4.3.1-eabi-armv6-20080707.tar.bz2

 

3. Add Source Path in your environment file

# Vi ~ /. Bashrc

Add the Source Path

Path = $ path:/usr/local/ARM/4.3.1-eabi-armv6/usr/bin

# Source ~ /. Bashrc

 

4 unzip the code using tar command

# Tar xvjf cross-4.2.2-eabi.tar.bz2-C/usr/local/ARM

 

 

1.3 build android

1. Use the tar command to extract the source code to a path /.

2. Move to Android directory and build it.

# Cd path/Android (this is the path after you extract the android source code)

# Make (this step is for compilation and may take a long time)

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