linux驱动学习（1）－ubuntu 内核源码下载及编译

1.查看当前系统原码版本
gavin@ubuntu:/usr/src$ apt-cache search linux-source
linux-source - Linux kernel source with Ubuntu patches
linux-source-2.6.35 - Linux kernel source for version 2.6.35 with Ubuntu patches

2.下载源码
gavin@ubuntu:/usr/src$ sudo apt-get install linux-source-2.6.35

下载完成后，在/usr/src目录中，可以看到压缩包
gavin@ubuntu:/usr/src$ ls
linux-headers-2.6.35-22 linux-source-2.6.35
linux-headers-2.6.35-22-generic linux-source-2.6.35.tar.bz2

3.编译
gavin@ubuntu:/usr/src$ sudo tar -xjvf linux-source-2.6.35.tar.bz2
gavin@ubuntu:/usr/src/linux-source-2.6.35$ sudo make menuconfig
HOSTCC scripts/basic/fixdep
HOSTCC scripts/basic/docproc
HOSTCC scripts/basic/hash
HOSTCC scripts/kconfig/conf.o
scripts/kconfig/conf.c: In function ‘conf_askvalue’:
scripts/kconfig/conf.c:105: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
scripts/kconfig/conf.c: In function ‘conf_choice’:
scripts/kconfig/conf.c:307: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
HOSTCC scripts/kconfig/kxgettext.o
*** Unable to find the ncurses libraries or the
*** required header files.
*** 'make menuconfig' requires the ncurses libraries.
***
*** Install ncurses (ncurses-devel) and try again.
***
make[1]: *** [scripts/kconfig/dochecklxdialog] 错误 1
make: *** [menuconfig] 错误 2

缺少ncurses库，安装
gavin@ubuntu:/usr/src/linux-source-2.6.35$ sudo apt-get install libncurses5-dev

重新编译成功。也可以使用系统原来的配置来编译，oldconfig
gavin@ubuntu:/usr/src/linux-source-2.6.35$ sudo make oldconfig #编译内核
gavin@ubuntu:~/linux_驱动开发$ make modules #编译模块
gavin@ubuntu:~/linux_驱动开发$ make modules_install #安装模块