我有一个脚本,在Linux(Ubuntu 11.04)上编译正常,但在OS X(Lion)上无法编译。
gcc -pthread -o hw1 hw1.c
hw1.c:22: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘barr’
hw1.c: In function ‘__syncthreads’:
hw1.c:53: error: ‘barr’ undeclared (first use in this function)
hw1.c:53: error: (Each undeclared identifier is reported only once
hw1.c:53: error: for each function it appears in.)
hw1.c:54: error: ‘PTHREAD_BARRIER_SERIAL_THREAD’ undeclared (first use in this function)
hw1.c: In function ‘parallel_psum’:
hw1.c:94: error: ‘barr’ undeclared (first use in this function)
hw1.c:107: warning: assignment from incompatible pointer type
以下是代码的前22行:
以下是代码的前22行:
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <math.h>
#include <sys/time.h>
#include <pthread.h>
#include <assert.h>
/* create thread argument struct for thr_func() */
typedef struct _thread_data_t {
int tid;
int* ints;
int* sums;
int num_ints;
int* temp;
} thread_data_t;
const int MIN_RAND_INT = 1;
const int MAX_RAND_INT = 65000;
// pthreads barrier variable
pthread_barrier_t barr;
有什么想法是为什么会发生这种情况吗?
pthread_barrier_t
。关于这一点的一些提示已经在这个问题中提到了。 - another.anon.coward