[C] Хидеры и Undefined reference.

#ifndef PARSER_H_INCLUDED
#define PARSER_H_INCLUDED

#define MLEN 128
#define CFG_FILE "ccafe"

struct ccafe_params
{
    char port[MLEN];
    char MMSG[MLEN];
}
ccafe_params;

void init_parameters (struct ccafe_params *parms);

char* trim (char *s);

void parse_config (struct ccafe_params *parms);



#endif // PARSER_H_INCLUDED

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include <parser.h>

void init_parameters (struct ccafe_params *parms)
{
    strncpy (parms->item, "port", MLEN);
    strncpy (parms->item, "MMSG", MLEN);
}

char * trim (char * s)
{
    char *s1 = s, *s2 = &s[strlen (s) - 1];
    while ( (isspace (*s2)) && (s2 >= s1) )
    s2--;
  *(s2+1) = '\0';
     while ( (isspace (*s1)) && (s1 < s2) )
    s1++;
    strcpy (s, s1);
    return s;

}

void parse_config (struct ccafe_params *parms)
{
     char *s, buff[256];
  FILE *fp = fopen (CFG_FILE, "r");
  if (fp == NULL)
  {
    return;
  }
  while ((s = fgets (buff, sizeof buff, fp)) != NULL)
  {
    if (buff[0] == '\n' || buff[0] == '#')
      continue;
    char name[MLEN], value[MLEN];
    s = strtok (buff, "=");
    if (s==NULL)
      continue;
    else
      strncpy (name, s, MLEN);
    s = strtok (NULL, "=");
    if (s==NULL)
      continue;
    else
      strncpy (value, s, MLEN);
    trim (value);
    if (strcmp(name, "port")==0)
      strncpy (parms->port, value, MLEN);
    else if (strcmp(name, "MMSG")==0)
      strncpy (parms->MMSG, value, MLEN);
   // else if (strcmp(name, "size")==0)
   //   strncpy (parms->size, value, MAXLEN);
    else
      printf ("WARNING: %s/%s: Unknown name/value pair!\n",
        name, value);
  }
  fclose (fp);

}

struct ccafe_params parms;
    printf ("Initializing parameters to default values...\n");
    init_parameters (&parms);
    printf ("Reading config file...\n");
    parse_config (&parms);
    printf ("Final values:\n");
    printf ("  port: %s, MSG: %s\n", parms.port,parms.MMSG);