LinuxQuestions.org - asynchronous I/O for Linux 2.6 problems....

I have been trying to resolve this for a short while now and I am getting very frustrated. I have been attempting to write a simple program for asynchronous I/O, make sure it works and then eventually merge it into the main branch of our company's I/O utility. Here is the source:

Code:

#define _USE_GNU

#define _GNU_SOURCE

#define _XOPEN_SOURCE 600

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <aio.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>



int main(int argc, char *argv[])

{

        int status;

        struct aiocb myaio;

        myaio.aio_fildes = open(argv[1], O_RDONLY | O_DIRECT);

        if(myaio.aio_fildes == -1)

        {

                perror("open");

                exit(0);

        }

        myaio.aio_nbytes = 512;

        myaio.aio_offset = 0;

        posix_memalign((void *)&myaio.aio_buf, 512, 512);

        status = aio_read(&myaio);

        //rest of code is irrelevant, it cannot seem to properly input 

        //the reference of myaio into aio functions such as aio_read/aio_write

        return 0;

}

Here is the error I get during the compilation/linking process:

Code:

/tmp/ccAtflgo.o(.text+0x8f): In function `main':

: undefined reference to `aio_read'

collect2: ld returned 1 exit status

I have even looked at aio examples off of the net to find that they are exactly like mine and error out exactly like mine. I am working with linux kernels 2.6.9-x and 2.6.16-x. Are there any known problems with aio or what am I doing wrong? Thanks in advance.