mykernel编译过程中问题解决

Posted 2020-06-18

fatal error: linux/compiler-gcc5.h: No such file or directory

compilation terminated.

解决方法:https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/plain/include/linux/compiler-gcc5.h?id=2c07053b8e1e0c22bb54dfbdf8e86a70f8bf00fc

复制内容保存为compiler-gcc5.h，放在要编译内核模块的内核代码的include/linux下。

以下编译步骤摘自https://github.com/mengning/mykernel

Welcome to the mykernel!

It is a platform to write your own OS kernel,its based on Linux Kernel 3.9.4 source code.

Set up this platform

sudo apt-get install qemu # install QEMU

sudo ln -s /usr/bin/qemu-system-i386 /usr/bin/qemu

wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.9.4.tar.xz # download Linux Kernel 3.9.4 source code

wget https://raw.github.com/mengning/mykernel/master/mykernel_for_linux3.9.4sc.patch # download mykernel_for_linux3.9.4sc.patch

xz -d linux-3.9.4.tar.xz

tar -xvf linux-3.9.4.tar

cd linux-3.9.4

patch -p1 < ../mykernel_for_linux3.9.4sc.patch

make allnoconfig

make

qemu -kernel arch/x86/boot/bzImage 

从qemu窗口中您可以看到my_start_kernel在执行，同时my_timer_handler时钟中断处理程序周期性执行。

cd mykernel 您可以看到qemu窗口输出的内容的代码mymain.c和myinterrupt.c

当前有一个CPU执行C代码的上下文环境，同时具有中断处理程序的上下文环境，我们初始化好了系统环境。

您只要在mymain.c基础上继续写进程描述PCB和进程链表管理等代码，在myinterrupt.c的基础上完成进程切换代码，一个可运行的小OS kernel就完成了。

start to write your own OS kernel,enjoy it!

mykernel patch generated by this command:

diff -Naur linux-3.9.4 linux-3.9.4.new/ > mykernel_for_linux3.9.4sc.patch

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