centos7编译linux的内核源码

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昨天编译了一个linux 内核源码，遇到一些问题，今天把我遇到的问题和解决方法分享给大家。希望可以帮助到需要的人。

1.检查是否安装了相应的包

我第一次编译的时候只安装的“Development Tools” 包，”Compatibility Libraries“和”Development and Creative Workstation“没有安装

[root@localhost yum.repos.d]# yum groups list #查看包组列表
Loaded plugins: fastestmirror, langpacks
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
Available Environment Groups:
Minimal Install
Compute Node
Infrastructure Server
File and Print Server
Basic Web Server
Virtualization Host
Server with GUI
GNOME Desktop
KDE Plasma Workspaces
Development and Creative Workstation
Available Groups:
Compatibility Libraries
Console Internet Tools
Development Tools
Graphical Administration Tools
Legacy UNIX Compatibility
Scientific Support
Security Tools
Smart Card Support
System Administration Tools
System Management
Done

2.下载源码从https://www.kernel.org/网站下载需要编译的内核。

这里直接使用wget命令进行下载

[root@localhost yum.repos.d]# cd /root #切换到root目录
[root@localhost ~]# wget https://cdn.kernel.org/pub/linux/kernel/v4.x/testing/linux-4.7-rc7.tar.xz #使用wget下载文件，这里下载的我下载的不是一个稳定版本的
--2016-07-11 09:59:34-- https://cdn.kernel.org/pub/linux/kernel/v4.x/testing/linux-4.7-rc7.tar.xz
Resolving cdn.kernel.org (cdn.kernel.org)... 151.101.88.69
Connecting to cdn.kernel.org (cdn.kernel.org)|151.101.88.69|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 90401360 (86M) [application/x-xz]
Saving to: ‘linux-4.7-rc7.tar.xz’100%[===================================================================================>] 90,401,360 392KB/s in 6m 35s 2016-07-11 10:06:10 (223 KB/s) - ‘linux-4.7-rc7.tar.xz’ saved [90401360/90401360][root@localhost ~]# ls -l | grep linux #查看下载的文件
-rw-r--r--. 1 root root 90401360 Jul 10 23:41 linux-4.7-rc7.tar.xz

3.解压文件和创建符号链接文件

tar -xf linux-4.7-rc7.tar.xz -C /usr/src/ #解压缩到指定目录
[root@localhost ~]# ls
anaconda-ks.cfg Documents initial-setup-ks.cfg Music Public Videos
Desktop Downloads linux-4.7-rc7.tar.xz Pictures Templates
[root@localhost ~]# cd /usr/src/ #进入文件目录
[root@localhost src]# ls
debug kernels linux-4.7-rc7
[root@localhost src]# ln -sv linux-4.7-rc7/ linux #创建符号链接
‘linux’ -> ‘linux-4.7-rc7/’
[root@localhost src]# ls #查看
debug kernels linux linux-4.7-rc7

4.创建.config文件

[root@localhost linux]# ls
arch COPYING Documentation fs ipc kernel MAINTAINERS net samples sound virt
block CREDITS drivers include Kbuild lib Makefile README scripts tools
certs crypto firmware init Kconfig linux mm REPORTING-BUGS security usr
[root@localhost linux]# make menuconfig #启动配置
HOSTCC scripts/basic/fixdep
HOSTCC scripts/kconfig/mconf.o
In file included from scripts/kconfig/mconf.c:23:0:
scripts/kconfig/lxdialog/dialog.h:38:20: fatal error: curses.h: No such file or directory
#include CURSES_LOC
^
compilation terminated.
make[1]: *** [scripts/kconfig/mconf.o] Error 1
make: *** [menuconfig] Error 2

这里报错误了。提示curses.h 这个文件找不到。

[root@localhost linux]# yum search curses #从yum源查找curses相关的包，配置本地yum源看我上篇博客。
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
==================================================== N/S matched: curses ====================================================
ncurses.x86_64 : Ncurses support utilities
ncurses-devel.i686 : Development files for the ncurses library
ncurses-devel.x86_64 : Development files for the ncurses library
ncurses-libs.i686 : Ncurses libraries
ncurses-libs.x86_64 : Ncurses libraries
ncurses-static.i686 : Static libraries for the ncurses library
ncurses-static.x86_64 : Static libraries for the ncurses library
ocaml-curses.x86_64 : OCaml bindings for ncurses
ocaml-curses-devel.x86_64 : Development files for ocaml-curses
NetworkManager-tui.x86_64 : NetworkManager curses-based UI
ncurses-base.noarch : Descriptions of common terminals
ncurses-term.noarch : Terminal descriptions Name and summary matches only, use "search all" for everything.
[root@localhost linux]# yum install ncurses #安装ncurses
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package ncurses-5.9-13.20130511.el7.x86_64 already installed and latest version
Nothing to do
[root@localhost linux]# yum install ncurses-devel #安装ncurses-devel
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package ncurses-devel.x86_64 0:5.9-13.20130511.el7 will be installed
--> Finished Dependency ResolutionDependencies Resolved=============================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================
Installing:
ncurses-devel x86_64 5.9-13.20130511.el7 localcdrom 713 kTransaction Summary
=============================================================================================================================
Install 1 PackageTotal download size: 713 k
Installed size: 2.1 M
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : ncurses-devel-5.9-13.20130511.el7.x86_64 1/1
Verifying : ncurses-devel-5.9-13.20130511.el7.x86_64 1/1 Installed:
ncurses-devel.x86_64 0:5.9-13.20130511.el7 Complete!

再次make menuconfig这个命令后，会出现如下的字符界面，我们就可以在这个界面上对内核进行配置。我们这里是第二次使用make menuconfig了，需要先运行：make mrproper来清除以前的配置，回到默认配置，然后再运行：make menuconfig生成.config文件通过这个工具可以设置内核配置参数。

关于选择这个地方需要说明下。

[*]：编译到内核文件中去，也就是类似这个vmlinuz-3.10.0-693.el7.x86_64文件中去。
[m]：编译到模块文件中去，也就是放到类似这个/lib/modules/3.10.0-693.el7.x86_64/目录中去。

5.执行make 命令

[root@localhost linux]# make
HOSTCC scripts/kconfig/conf.o
HOSTLD scripts/kconfig/conf
scripts/kconfig/conf --silentoldconfig Kconfig
SYSTBL arch/x86/entry/syscalls/../../include/generated/asm/syscalls_32.h
SYSHDR arch/x86/entry/syscalls/../../include/generated/asm/unistd_32_ia32.h
SYSHDR arch/x86/entry/syscalls/../../include/generated/asm/unistd_64_x32.h
SYSTBL arch/x86/entry/syscalls/../../include/generated/asm/syscalls_64.h
HYPERCALLS arch/x86/entry/syscalls/../../include/generated/asm/xen-hypercalls.h
SYSHDR arch/x86/entry/syscalls/../../include/generated/uapi/asm/unistd_32.h
SYSHDR arch/x86/entry/syscalls/../../include/generated/uapi/asm/unistd_64.h
SYSHDR arch/x86/entry/syscalls/../../include/generated/uapi/asm/unistd_x32.h
HOSTCC scripts/basic/bin2c
HOSTCC arch/x86/tools/relocs_32.o
HOSTCC arch/x86/tools/relocs_64.o
HOSTCC arch/x86/tools/relocs_common.o
HOSTLD arch/x86/tools/relocs
CHK include/config/kernel.release
UPD include/config/kernel.release
WRAP arch/x86/include/generated/asm/clkdev.h
WRAP arch/x86/include/generated/asm/cputime.h
WRAP arch/x86/include/generated/asm/dma-contiguous.h
WRAP arch/x86/include/generated/asm/early_ioremap.h
WRAP arch/x86/include/generated/asm/mcs_spinlock.h
WRAP arch/x86/include/generated/asm/mm-arch-hooks.h
CHK include/generated/uapi/linux/version.h
UPD include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
CC arch/x86/purgatory/purgatory.o
AS arch/x86/purgatory/stack.o
AS arch/x86/purgatory/setup-x86_64.o
CC arch/x86/purgatory/sha256.o
AS arch/x86/purgatory/entry64.o
CC arch/x86/purgatory/string.o
LD arch/x86/purgatory/purgatory.ro
BIN2C arch/x86/purgatory/kexec-purgatory.c
CC kernel/bounds.s
CHK include/generated/bounds.h
UPD include/generated/bounds.h
CHK include/generated/timeconst.h
UPD include/generated/timeconst.h
CC arch/x86/kernel/asm-offsets.s
CHK include/generated/asm-offsets.h
UPD include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
HOSTCC scripts/genksyms/genksyms.o
SHIPPED scripts/genksyms/parse.tab.c
HOSTCC scripts/genksyms/parse.tab.o
SHIPPED scripts/genksyms/lex.lex.c
SHIPPED scripts/genksyms/keywords.hash.c
SHIPPED scripts/genksyms/parse.tab.h
HOSTCC scripts/genksyms/lex.lex.o
HOSTLD scripts/genksyms/genksyms
CC scripts/mod/empty.o
HOSTCC scripts/mod/mk_elfconfig
MKELF scripts/mod/elfconfig.h
HOSTCC scripts/mod/modpost.o
CC scripts/mod/devicetable-offsets.s
GEN scripts/mod/devicetable-offsets.h
HOSTCC scripts/mod/file2alias.o
HOSTCC scripts/mod/sumversion.o
HOSTLD scripts/mod/modpost
HOSTCC scripts/selinux/genheaders/genheaders
HOSTCC scripts/selinux/mdp/mdp
HOSTCC scripts/kallsyms
HOSTCC scripts/pnmtologo
HOSTCC scripts/conmakehash
HOSTCC scripts/recordmcount
HOSTCC scripts/sortextable
HOSTCC scripts/asn1_compiler
HOSTCC scripts/sign-file
scripts/sign-file.c:25:30: fatal error: openssl/opensslv.h: No such file or directory
#include <openssl/opensslv.h>
^

上面的报错了，才发现原来的编译环境的包没有安装好。

执行下面命令安装包

[root@localhost linux]# yum groups list
Loaded plugins: fastestmirror, langpacks
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
Available Environment Groups:
Minimal Install
Compute Node
Infrastructure Server
File and Print Server
Basic Web Server
Virtualization Host
Server with GUI
GNOME Desktop
KDE Plasma Workspaces
Development and Creative Workstation
Available Groups:
Compatibility Libraries
Console Internet Tools
Development Tools
Graphical Administration Tools
Legacy UNIX Compatibility
Scientific Support
Security Tools
Smart Card Support
System Administration Tools
System Management
Done
[root@localhost linux]#yum groups install "Development and Creative Workstation" "Compatibility Libraries" -y

这里可以仅仅安装openssl相关的基础包和开发包即可的，但是为了后续其他的编译安装，我就直接安装了"Compatibility Libraries"包。

6.执行 make clean 和make

[root@localhost linux]# make clean # 清空错误的编译环境
CLEAN .
CLEAN arch/x86/purgatory
CLEAN arch/x86/tools
CLEAN .tmp_versions
[root@localhost linux]# make # 再次编译，这里可以指定并行度的，如果你有4个cpu，可以执行如下命令 make -j 4 来加速编译进度。