Memory mapping in Octave with mex-functions - octave

Question

I have a plain C code (running on Linux) and I would like to implement it in Octave, so I thought I could use a mex-file for handling the memory mapping and send the information I received (or send) back and forth to my script in Octave and my sensors. The C code looks like this:
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <poll.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#define CUSTOM_IP_MAP_SIZE 0x10000
#define CUSTOM_IP_BASEADDR 0x43C00000
#define CUSTOM_IP_S00_AXI_SLV_REG0_OFFSET 0
#define CUSTOM_IP_S00_AXI_SLV_REG1_OFFSET 4
int main(void)
{
uint32_t leds=0x0;
int fd = open("/dev/uio0", O_RDWR);
void *ptr;
if (fd < 0) {
perror("open");
exit(EXIT_FAILURE);
}
ptr = mmap(NULL, CUSTOM_IP_MAP_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
while (1) {
leds = *((unsigned *)(ptr + CUSTOM_IP_S00_AXI_SLV_REG1_OFFSET)); //Read from the IP (slv_reg1).
*((unsigned *)(ptr + CUSTOM_IP_S00_AXI_SLV_REG0_OFFSET)) = leds; //Write to the IP (slv_reg0).
}
close(fd);
exit(EXIT_SUCCESS);
}
I compiled the code with no errors and the following command:
mkoctfile --mex mmap.c
I get the following error when I run it in Octave:
error: failed to install .mex file function 'mmap'
Should I keep trying to do this with a mex-function or there is other option better for this?
Thank you for any help.