Fourth Reading notes

A Download, compile, and test Android source code:

Configure the environment for Android source code downloads:

1. Create a directory to hold the download script file (repo)

2. Download Repo script file

3. Create a directory to hold Android source code

4. Initialization

5. Start downloading Android source code

Android Source code directory structure parsing

Download part of the Android source code:

Method One: Use the repo Sync command;

Method Two: Use the git clone command;

Compiling Android Source code:

1. Initialize the compilation environment: Perform either of the two commands on the Linux terminal.

#source build/envsetup.sh

Or

. build/envsetup.sh

2. Select target: Use the lunch command to set the compilation directory.

3. Compile the Android source code: Run the following command to compile the Android sources:

#make

Out Directory structure analysis:

The Out directory is the default directory that holds the target files generated by the compiled Android source code.

Publish your apk as an Android built-in program:

The simplest way to embed the APK program in a sysytem.img file is to copy the apk file to the Sysytem/app directory and then generate the System.img file from the system directory.

Two Download and compile the Linux kernel source code:

Download the Linux kernel source code: Execute the following command:

#git Clone Https://android.googlesource.com/kernel/common.git

The directory structure of the Linux kernel source code.

Install the Android kernel compilation environment:

Compiling the Linux kernel under Ubuntu Linux requires the installation of a cross compiler.

To configure and compile the Linux kernel:

Use the following command to compile the Linux kernel:

#export Path=/root/compilers/arm-none-linux-gnueabi/bin:&path

#cd ~/linux_kernel

#make Clean

#make

Fourth Reading notes