Hello community,

I'm absolutely new to RTAI. I have succesfully installed Ubuntu 7.04 on a Pentium 3

PC.

I have successfully installed RTAI 3.5-Cv with 2.6.20 kernel but I can't compile the classic "Hello World" program.

I created simple.c under directory: /home/mario/hellow

The C code is:

/* simple.c */

#define __KERNEL__
#define MODULE
#include <linux/kernel.h>
#include <linux/module.h>

int init_module(void)
{
printk("hello, world!\n"); /* printk = kernel printf, to the console */

return 0;
}

void cleanup_module(void)
{
printk("goodbye, world!\n");

return;
}

/* end of simple.c */



When I compile with:

gcc -c simple.c

I receive error message:

simple.c:6:26: error: linux/module.h
Obviously compiler is not finding the header file module.h under "linux", since this

is a relative path i did the following:


I created subdirectory "linux" under /home/mario/hellow and copied into there all *.h

files that I found under /usr/src/linux-headers-2.6.20-15/include/linux.

I tried again gcc -c simple.c being my current directory /home/mario/hellow and still

same problem despite the fact that the directory linux with all header files exists

below.

Obviously I am not understanding on what directory I should create the simple.c code.

Can somebody please help?

Thank you so much!

Mario Vallejo

You need a tutorial:
http://www.isd.mel.nist.gov/projects...c/tutorial.htm

why not
#include <kernel.h>
#include <module.h>

... and let the environment variables point to the linux headers? Is module.h even in there?