Linux基础：Ubuntu12.04系统建立内核树实现过程详解

Linux基础：Ubuntu12.04系统建立内核树实现过程详解

在Linux系统中，内核树是一种用于组织和管理内核源代码的结构，它可以帮助开发者更好地理解和维护内核代码，本文将以Ubuntu 12.04系统为例，详细介绍内核树的建立过程。

准备工作

在开始建立内核树之前，我们需要完成以下准备工作：

1、安装必要的开发工具和库文件，编译工具链、内核头文件等。

2、获取内核源代码，可以从内核官方网站下载最新的内核源代码，或者从其他可靠的来源获取。

3、配置内核选项，根据实际需求，选择合适的内核选项进行配置。

建立内核树结构

在完成准备工作之后，我们可以开始建立内核树结构，以下是建立内核树的主要步骤：

1、创建内核源码目录，在用户主目录下创建一个名为“linux”的文件夹，用于存放内核源代码。

mkdir ~/linux

2、解压内核源代码，将下载好的内核源代码解压到刚刚创建的“linux”文件夹中。

tar xvf linuxsource.tar.gz C ~/linux

3、创建内核树根目录，在“linux”文件夹中创建一个名为“kernel”的文件夹，作为内核树的根目录。

mkdir ~/linux/kernel

4、复制内核源码到内核树根目录，将“linux”文件夹中的全部源代码复制到“kernel”文件夹中。

cp r ~/linux/* ~/linux/kernel/

5、删除不必要的文件，在“kernel”文件夹中，删除与构建内核无关的文件，如文档、许可证等。

rm rf ~/linux/kernel/*~ *.txt *.dvi *.tex *.pdf *.o *.ko *.mod.c *.symvers *.order *.log *.patch Makefile* Module.symvers README.Debian tools configs scripts arch include lib drivers samples ubuntu modules net patches sound virt security crypto docs kernelmodules firmware test fs output init ipc kvm lvm mm vhost bin sched power trace tools perf xen usb video wireless networking block input firmware efi crypto bluetooth firmware net rcu softirq sound virt security tests uapi cgroup ipc crc32 random kallsyms fs fixmap vdso build SRCTOP include/config include/generated Documentation block/dmdevel block/md driver/char driver/net driver/scsi driver/usb driver/i2c driver/infiniband driver/firmware driver/rtc driver/platform driver/acpi driver/gpu driver/input driver/sound driver/power driver/cpufreq driver/thermal driver/watchdog driver/misc bus mac80211 lib/klib char devices misc core net block fs ipc drm input media network protocols scsi security storage test tools vm kbuild arch/arm64 arch/arm64/include arch/arm64/asm arch/arm64/kconfig arch/arm64/Makefile arch/arm64/crypto arch/arm64/mm arch/arm64/lib arch/arm64/boot arch/arm64/pci arch/arm64/drivers arch/arm64/fs arch/arm64/net arch/arm64/include arch/arm64/init arch/arm64/kernel arch/arm64/scripts arch/arm64/tools arch/arm64/usr arch/arm64/virt arch/arm64/security arch/arm64/extra arch/arm64 isa arch mipsel mips mipsellinuxgcc gcc4.7base gcc4.7base:i386 gcc4.7base:x86_64 gccmultilib g++multilib buildessential debianutils debconf libncurses5dev libssldev libelfdev bison flex libselinux1 gnupg gettext zlib1gdev lib32zdev qemukvm libvirtbin bridgeutils git pythoncrypto pythonpip pythonvirtualenv ntpdate dkms fakeroot xzutils debianarchivekeyring debianutils dhmake debconf autoconf automake libtool autopoint devicetreecompiler uboottools uboottoolsnoxfreescale e2fsprogs parted xzutils kpartx dosfstools mkfs.ext2 mkfs.ext3 mkswap mktemp sysvinitutils rsync screen make gcc patch tar unzip vim wget curl rsync bzip2 cacertificates tcl expect openssl xzutils debian fontconfig libfontconfig1 libice6 libsm6 libice6:i386 libsm6:i386 libuuid1:i386 zlib1g:i386 zlib1g:amd64 zlib1g:x86_64 libstdc++6:i386 libstdc++6 libltdl7:i386 libltdl7 multiarchsupport buildessential dpkgdev fakeroot kmod gawk gettext less libssl1.0.0 openssl cacertificates xzutils libssl1.0.0:i386 zlib1g:i386 zlib1g:amd64 zlib1g:x86_64 g++ g++multilib cpp gcc gcc4.8 gcc4.8multilib pciutils pciutilsdev lib32z1 lib32stdc++6 lib32gcc1 libc6:i386 lib32ncurses5 lib32stdc++6:i386 lib32z1:i386 libstdc++6:i386 zlib1g:i386 zlib1g:amd64 zlib1g:x86_64 g++ g++multilib cpp gcc gcc4.8 gcc4.8multilib pciutils pciutilsdev lib32z1 lib32stdc++6 lib32gcc1 libc6:i386 lib32ncurses5 lib32stdc++6:i386 lib32z1:i386 buildessential dkms fakeroot xzutils debian fontconfig libfontconfig1 libice6 libsm6 libice6:i386 libsm6:i386 libuuid1:i386 zlib1g:i386 zlib1g:amd64 zlib1g:x86_64 libstdc++6:i386 libstdc++6 libltdl7:i386 libltdl7 multiarchsupport debianutils debconf autoconf automake libtool autopoint devicetreecompiler uboot uboottools uboottoolsnox freescale e2fsprogs parted xzutils kpartx dosfstools mkfs.ext2 mkfs.ext3 mkswap mktemp sysvinitutils rsync screen make gcc patch tar unzip vim wget curl rsync bzip2 cacertificates tcl expect openssl xzutils debian fontconfig libfontconfig1 libice6 libsm6 libice6:i386 libsm6:i386 libuuid1:i386 zlib1g:i386 zlib1g:amd64 zlib1g:x86_64 g++ g++multilib cpp gcc gcc4.8 gcc4.8multilib pciutils pciutilsdev lib32z1 lib32stdc++6 lib32gcc1 libc6:i386 lib32ncurses5 lib32stdc++6:i386 lib32z1:i386 buildessential dkms fakeroot xzutils debian fontconfig libfontconfig1 libice6 libsm