疑难杂症之bounds.h＆MAX_NR_ZONES

include/linux/mmzone.h:18:26: error: linux/bounds.h: No such file or directory
include/linux/mmzone.h:197:5: warning: "MAX_NR_ZONES" is not defined

最近在做framebuffer驱动，make过程中出现了上述错误，百思不得其解，找了N久也找不到问题出在哪里！百度是不行了，google吧！看来会点英文还是有点用的！

I just ran into the same problem. The "bounds.h" header is created by the
kernel. Maybe you've done a "make clean" or "make distclean" in your kernel
sources before?

So go to "/usr/src/linux" and do a "make prepare". This will generate the
missed "bounds.h" for you. After that, emerge "lirc" again. Worked fine for
me...说下大致的意思吧：bounds.h是在编译内核时生成的，类似于编译产生的.o文件，如果你运行
"make clean" or "make distclean"，这个文件就会被清除掉（详情查看内核Makefile）。
因此，如果再利用此内核源码编译内核模块，如果有涉及bounds.h，就会出现找不到该文件的错误。

解决办法就是：
"make prepare"
这样就会重新生成bounds.h，搞定了！

再看看其内容：


#ifndef __LINUX_BOUNDS_H__
#define __LINUX_BOUNDS_H__
/*
* DO NOT MODIFY.
*
* This file was generated by Kbuild
*
*/

#define NR_PAGEFLAGS 19 /* __NR_PAGEFLAGS @ */
#define MAX_NR_ZONES 3 /* __MAX_NR_ZONES @ */

#endif