Linux中未定义的对p线程_CREATE的引用
#include <pthread.h>#include <stdio.h>#define NUM_THREADS 5void *PrintHello(void *threadid){
long tid;
tid = (long)threadid;
printf("Hello World! It's me, thread #%ld!\n", tid);
pthread_exit(NULL);}int main (int argc, char *argv[]){
pthread_t threads[NUM_THREADS];
int rc;
long t;
for(t=0; t<NUM_THREADS; t++){
printf("In main: creating thread %ld\n", t);
rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
if (rc){
printf("ERROR; return code from pthread_create() is %d\n", rc);
exit(-1);
}
}
pthread_exit(NULL);}corey@ubuntu:~/demo$ gcc -o term term.c term.c: In function ‘main’:term.c:23: warning: incompatible implicit declaration of built-in function ‘exit’/tmp/cc8BMzwx.o: In function `main':term.c:(.text+0x82): undefined reference to `pthread_create'collect2: ld returned 1 exit status
pthread.hpthread_create
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