arm-none-gnueabi-gcc does not support threading

[amikhail48]

Example program:

#include "pthread.h" 
#include "stdio.h"
#include "stdlib.h"

void *worker_thread(void *arg) 
{ 
    printf("This is worker_thread()\n"); 
    pthread_exit(NULL); 
} 

int main() 
{ 
    pthread_t my_thread; 
    int ret; 
    printf("In main: creating thread\n"); 
    ret = pthread_create(&my_thread, NULL, &worker_thread, NULL); 
    if(ret != 0) 
    {
        printf("Error: pthread_create() failed\n"); 
        exit(EXIT_FAILURE); 
    } 
    pthread_exit(NULL); 
}

Compilation error:

pthread.c: In function 'void* worker_thread(void*)':

pthread.c:8:18: error: 'pthread_exit' was not declared in this scope
pthread_exit(NULL);
                  ^
pthread.c: In function 'int main()':
pthread.c:15:1: error: 'pthread_t' was not declared in this scope
 pthread_t my_thread;
 ^
pthread.c:15:11: error: expected ';' before 'my_thread'
 pthread_t my_thread;
           ^
pthread.c:18:23: error: 'my_thread' was not declared in this scope
 ret = pthread_create(&my_thread, NULL, &worker_thread, NULL);
                       ^
pthread.c:18:60: error: 'pthread_create' was not declared in this scope
 ret = pthread_create(&my_thread, NULL, &worker_thread, NULL);
                                                            ^
pthread.c:24:21: error: 'pthread_exit' was not declared in this scope
  } pthread_exit(NULL);

[hexdae]

Hey @amikhail48, I think the phtread libraries are not available for embedded implementations of libc. You might need to link a platform specific implementation for this to work, similar to the dynamic memory allocation options.