ruchimca
February 10th, 2006, 01:58 AM
This is the code I am trying to run in VC++ 6.0
#include <pthread.h>
#include <string> /* for strerror() */
#include <cstdio>
#define NTHREADS 4
#define errexit(code,str) \
fprintf(stderr,"%s: %s\n",(str),strerror(code)); \
exit(1);
/******** this is the thread code */
void *hola(void * arg)
{
int myid=*(int *) arg;
printf("Hello, world, I'm %d\n",myid);
return arg;
}
/******** this is the main thread's code */
int main(int argc,char *argv[])
{
int worker;
pthread_t threads[NTHREADS]; /* holds thread info */
int ids[NTHREADS]; /* holds thread args */
int errcode; /* holds pthread error code */
int *status; /* holds return code */
/* create the threads */
for (worker=0; worker<NTHREADS; worker++) {
ids[worker]=worker;
if (errcode=pthread_create(&threads[worker],/* thread struct */
NULL, /* default thread attributes */
hola, /* start routine */
&ids[worker])) { /* arg to routine */
errexit(errcode,"pthread_create");
}
}
/* reap the threads as they exit */
for (worker=0; worker<NTHREADS; worker++) {
/* wait for thread to terminate */
if (errcode=pthread_join(threads[worker],NULL)) {
errexit(errcode,"pthread_join");
}
/* check thread's exit status and release its resources */
if (*status != worker) {
fprintf(stderr,"thread %d terminated abnormally\n",worker);
exit(1);
}
}
return(0);
}
Now, the I have downloaded latest pthread-win32 files from gnu site in C:\PTHREADS\Pre-built\
C:\PTHREADS\Pre-built\Include -> has files pthread.h, semaphore.h, sched.h
C:\PTHREADS\Pre-built\lib -> has dlls and libs pthreadVSE2.lib, pthreadVSE2.dll, pthreadVSE.lib, pthreadVSE.dll, PTHREADVCE.LIB,PTHREADVCE.dll, pthreadVC2.lib, pthreadVC2.dll, pthreadVC.dll, pthreadVC.lib, pthreadGCE2.dll,pthreadGC.dll,pthreadGCE.dll,
pthreadGC2.dll and some .a's
Now, I have included C:\PTHREADS\Pre-built\Include in vc++ include directory path and C:\PTHREADS\Pre-built\lib in lib directory path [ Tools->
options-> Directories]
After building the code, I get error "LNK2001 unresolved external symbol __imp_pthread_create.... and __imp_pthread_join....
How can I resolve this?
Regards.