Problems with PIGPIO library and S-Function Builder - Raspberry Pi

Hi, I'm trying to use SPI protocoll with PIGPIO library with a Raspberry Pi 4 (http://abyz.me.uk/rpi/pigpio/), and the S-Function Builder Block's code is:

Includes_BEGIN:

# ifndef MATLAB_MEX_FILE

    #define SPI_SPEED 15000000
    #define SPI_CH 1  
    #define BUFFER_DIM 2
    
    #include </home/pi/pigpio-master/pigpio.h>
    #include </home/pi/pigpio-master/pigpio.c>
    #include </usr/include/pthread.h>
    #include </usr/include/fcntl.h>
    
    char buffer[BUFFER_DIM], msb, lsb;
    uint16_T msb_uint16;
    int w;

#endif

Update_BEGIN:

if(xD[0] != 1){
    # ifndef MATLAB_MEX_FILE 
       w = spiOpen(SPI_CH, SPI_SPEED, 0);
    #endif
    //done with initialization
    xD[0] = 1; 
}

Output_BEGIN:

if(xD[0] == 1)
{
    #ifndef MATLAB_MEX_FILE 
        buffer[0] = in[0] >> 8;
        buffer[1] = in[0];
        spiWrite(w,buffer,BUFFER_DIM);
    #endif 
}

but I keep getting the following error:

<command-line>: note: this is the location of the previous definition
In file included from /home/pi/MATLAB_ws/R2021a/C/Users/jacqu/Desktop/Universita/Triennio/3_ANNO/TESI/raspberry/ADCDACPi/test_with_simulink/ex_with_lookup_table_and_pigpio/PIGPIO_SPI_wrapper.c:23:
/home/pi/pigpio-master/pigpio.c: In function ‘gpioNotifyOpenWithSize’:
/home/pi/pigpio-master/pigpio.c:12044:21: error: ‘F_SETPIPE_SZ’ undeclared (first use in this function); did you mean ‘FD_SETSIZE’?
       i = fcntl(fd, F_SETPIPE_SZ, bufSize);
                     ^~~~~~~~~~~~
                     FD_SETSIZE

I found this solution but it didn't work: https://stackoverflow.com/questions/25411892/f-setpipe-sz-undeclared

Therefore, I tried commenting out the fcntl function inside the pigpio.c file, as below:

if (bufSize != 0)
{
  //i = fcntl(fd, F_SETPIPE_SZ, bufSize);
  i = bufSize;
  if (i != bufSize)
  {
     gpioNotify[slot].state = PI_NOTIFY_CLOSED;
     SOFT_ERROR(PI_BAD_PATHNAME,
        "fcntl %s size %d failed (%m)", name, bufSize);
  }
}              

In this case, when I click "Build, Deploy and Start", I don't get any errors, but I don't read anything in output to the SPI, even though the process is running.

Any idea? I use the release R2021a .