包含头文件编不过

shutle

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <asm/cpu.h>

int main()
{
        return 0;
}

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arm-linux-gcc -I/usr/local/arm-linux/arm-linux/include test.c
In file included from /usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/asm/cpu.h:14,
                 from test.c:4:
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/linux/percpu.h: In function `__alloc_percpu':
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/linux/percpu.h:44: error: `GFP_KERNEL' undeclared (first use in this function)
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/linux/percpu.h:44: error: (Each undeclared identifier is reported only once
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/linux/percpu.h:44: error: for each function it appears in.)
In file included from test.c:4:
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/asm/cpu.h: At top level:
/usr/local/arm-linux/bin/../lib/gcc/arm-linux/3.4.6/../../../../arm-linux/sys-include/asm/cpu.h:17: error: field `cpu' has incomplete type

eveson

没找到头文件，-I中的路径对吗

shutle

路径是对的

shenxiaocheng

隐藏的够深的，估计环境没弄好

langue

内核的头文件，是不是需要 -DKERNEL？还是 __KERNEL__，记不清了。
总之，在用户程序中包含内核头文件，是非常不好的做法。

shutle

用户程序中能访问驱动程序接口吗，谢谢！