编译android源码

首先搭建android编译环境。

      （一）安装配置java5

      1 先安装java6(编译android需要java5，此处为推荐)

         打开终端，执行以下命令，或使用Adept/新立得软件管理器，在其中分别搜索"sun-java6-jre"和"sun-java6-jdk"并标记安装。 

         sudo apt-get install sun-java6-jre
         如果空间富裕，建议安装一个JDK。

         sudo apt-get install sun-java6-jdk
         提示：安装过程中需要你回答是否同意使用协议（终端中红蓝色的提示界面），此时按tab键至OK，再按回车即可正常安装。

      2 安装java5

        

　　　　　　如果是ubuntu910版本，安装java5时需要更新源，方法：

　　       将下面更新放到更新源最前面
          更新的源：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 设置当前默认的java解释器和编译器： (ubuntu9.10如果没有安装多个java虚拟机的话可以跳过这一步。)

         sudo update-alternatives --config java
         执行后会出现类似如下的画面:

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:

输入 有包含 "sun" 的行的前面的数字。如上面显示，则输入3，然后回车确定。（编译android需要配置java5）

sudo update-alternatives --config javac

操作和前面类似。

       4 配置JAVA环境变量:

     sudo gedit /etc/environment

        在其中添加如下两行：

     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

        要使配置生效必须重启机器或者在命令行输入

     . /etc/environment

       5 配置JVM的优先级: (ubuntu9.10如果没有安装多个java虚拟机的话可以跳过这一步。)

     sudo gedit /etc/jvm

        将文件中的

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

        这一行填入到配置块的顶部

 

 （二）安装交叉编译器及其他编译工具

 

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. 用tar命令将源码解压到某路径下path/.     

2. Move to android directory and build it.

       # cd path/android（这个是你解压android源码后的路径）

       # make（这步是编译，可能会需要很长时间）

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明天再写如何在Eclipse下调试android源码