Study Notes on Kernel compilation and Installation

Prerequisites: common tools for viewing local hardware information

View CPU information:

# Cat/proc/cpuinfo

# X86info

# Lscpu

View pci:

# Lspci

View USB:

# Lsusb

View Block devices:

# Lsblk

View the comprehensive device details:

# Hal-Device

Compilation: Cross-Compilation

Cross-Compiling is used for compiling on the host machine and is applied to kernels with different architectures on other machines.

Kernel compilation steps: (install the development environment: development tools, server platform development, ncurses-devel)

Prerequisite 1: Install the development environment

# Yum grouplist

Yum groupinstall development tools

# Yum install ncurses-devel

Premise 2: Download the kernel

# Lftp 172.16.0.1

CD pub/sourcess/sources/kernel

Get linux-3.10.10.tar.xz

Premise 3: Expand the kernel

# Tar xf linux-3.10.10.tar.xz-C/usr/src

Premise 4: view the kernel size

# Du-SH/usr/src/linux-3.10.10/

Prerequisite 5: create a link

# Ln-SV linux-3.10.10 Linux

Note: The following steps are performed in the expanded kernel directory:

Step 1: Configure kernel compilation options

# Make menuconfig

Step 1_1: Copy compilation configuration options

# Cp/boot/config-2.6.32-431.el6.x86_64./. config

Step 2: Use multiple windows to run the compilation

# Screen

Step 3: enable simultaneous compilation of two processes

# Make-J 2

Step 4: Install the kernel module

# Make modules_install

Step 5: Install the kernel

# Make install

Step 6: Check whether any new title appears in grub. conf.

# Cat/boot/GRUB/grub. conf

Before secondary compilation, You need to perform the following cleanup operations:

# Make clean clear the compiled files, but keep the configuration files

# Make mrproper remove all compiled files, configuration files, and backup files

# Make distclean

1. Save the compiled files elsewhere:

# Mkdir/path/to/somewhere

# Cd/path/to/somewhere

#./Config -- ksource =/usr/src/Linux

2. How to compile only part of the kernel code:

(1) Compile only the relevant code in a subdirectory

# Cd/usr/src/Linux

# Make path/to/DIR/

For example:

# Make subdir = ARCH/

# Make Drivers/NET/

(2) Compile only some modules

# Make M = path/to/Dir

# Make M = drivers/NET/

(3) Compile only one module

# Make path/to/DIR/mod_name.ko

For example:

# Make Drivers/NET/Ethernet/Intel/e1000/e1000.ko

(4) Save the compiled files elsewhere

# Make o =/path/to/somewhere

3. Cross-Compilation

# Make arch = Arch

For example:

# Make arch = arm acs5k_defconfig

Obtains available default configurations of an arch.

# Make arch = arch help

For example:

# Make arch = i386 help