undefined reference to `_p_mutex_lock'

First, I am noob at threads. I am modifying a program that runs on a windows server platform to use two parallel threads and mutex locks on global resources. I compile with cygwin's gcc compiler
gcc source.c -o out.exe -lcurl (the program also uses curl)
The error it gives me:
/cygdrive/c/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ccr8d7lT.o:myevault.2.1.0.c.text+0
x9e03): undefined reference to `_p_mutex_lock'
collect2: ld returned 1 exit status
NOTE: adding -lpthread to the gcc command does no good

Here are the (I think) relevant pthread and mutex sections from the program:
=============================================

Code:

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
#include <winbase.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <curl/curl.h>
#include <pthread.h>
#include <unistd.h>
 
/*  also in the global definitions */
pthread_mutex_t CheckLogMutex = PTHREAD_MUTEX_INITIALIZER; 
pthread_mutex_t set_state_and_ftpMutex = PTHREAD_MUTEX_INITIALIZER; 
 
//function one
static void *one(void *vptr_args)
{
    // function code
    //.
    //.
    //.
    pthread_mutex_lock( &set_state_and_ftpMutex );
         //global resource code
    pthread_mutex_unlock( &set_state_and_ftpMutex  );
    return NULL;
}
//function two
static void *two(void *vptr_args)
{
    // function code
    //.
    //.
    //.
    pthread_mutex_lock( &set_state_and_ftpMutex );
         //global resource code
    pthread_mutex_unlock( &set_state_and_ftpMutex  );
    return NULL;
}
main
{
  pthread_t thread_do_one;
  pthread_t thread_do_two;
  //code  
  //...
        if (pthread_create(&thread_do_one, NULL, one, NULL) != 0)
        {
          //handle thread creation error
        }
        if (pthread_create(&thread_do_two, NULL, two, NULL) != 0)
        {
          //handle thread creation error
        }
 
  pthread_join(one, NULL);
  //code...
}

================================================== ===


So I figure I am missing a some library file or something, BUT I wanted to see if a simple example would work. From a tutorial on threads, I created a simple "threads with mutex" test program. It compiles and runs fine. (compiled with gcc source.c -o out.exe)

/* this program compiles and runs fine */

Code:

#include <stdio.h>
#include <pthread.h>
 
pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
 
int count = 0;
 
void* function1( void* arg )
{
    int tmp = 0;
 
    while( 1 ) {
        pthread_mutex_lock( &mymutex );
        tmp = count++;
        pthread_mutex_unlock( &mymutex );
        printf( "Count is %d\n", tmp );
 
        /* snooze for 1 second */
        sleep( 1 );
    }
 
    return 0;
}
 
void* function2( void* arg )
{
    int tmp = 0;
 
    while( 1 ) {
        pthread_mutex_lock( &mymutex );
        tmp = count--;
        pthread_mutex_unlock( &mymutex );
        printf( "** Count is %d\n", tmp );
 
        /* snooze for 2 seconds */
        sleep( 2 );
    }
 
    return 0;
}
 
int main( void )
{
  pthread_t one;
  pthread_t two;

    pthread_create( &one, NULL, &function1, NULL );
    pthread_create( &two, NULL, &function2, NULL );
 
    /* Let the threads run for 60 seconds. */
    sleep( 60 );
 
    return 0;
}

At this point, I don't have any ideas. Any help will be MUCH appreciated.

Leon

Is myevault.c the name of one of your own source files?

If you compile with "-g" the linker message will include the actual line number which is causing the problem.

THANKS! It was a simple stupid typo!