在socketc.cpp中：

#include   
#include   
     ............

/////////////////////////////////////////////////////////
int main(int argv,char ** args)
{
                .........
                pthead_t thread_r;//创建接受线程
                pthread_attr_t attr_r;
                pthread_attr_init(&attr_r);
                pthread_attr_setdetachstate(&attr_r,PTHREAD_CREATE_JOINABLE);

                pthead_t thread_s;//创建发送线程
                pthread_attr_t attr_s;
                pthread_attr_init(&attr_s);
                pthread_attr_setdetachstate(&attr_s,PTHREAD_CREATE_JOINABLE);

                if(0 == pthread_create(&thread_r,&attr_r,process_r,(void*)&sockfd))
                {
                        perror("线程创建");
                        return 1;
                }
                if(0 == pthread_create(&thread_s,&attr_s,process_s,(void*)&sockfd))
                {
                        perror("线程创建");
                        return 1;
                }
                pthread_attr_destroy(&attr_r);
                pthread_attr_destroy(&attr_s);

                pthread_join(thread_r,NULL);
                pthread_join(thread_s,NULL);
                ..........
}

编译：g++ -g -c -L /lib socketc.cpp -lpthread
            g++ -g -c -L /lib socketc.cpp -llibthread_db-1.0

/lib下有文件libthread_db-1.0.so
均出现：

错误：‘pthead_t’ 在此作用域中尚未声明
socketc.cpp:65: 错误：expected `;' before ‘thread_r’
socketc.cpp:70: 错误：expected `;' before ‘thread_s’
socketc.cpp:75: 错误：‘thread_r’ 在此作用域中尚未声明
socketc.cpp:80: 错误：‘thread_s’ 在此作用域中尚未声明
socketc.cpp:88: 错误：‘thread_r’ 在此作用域中尚未声明
socketc.cpp:89: 错误：‘thread_s’ 在此作用域中尚未声明

我的系统是fedora 6.0
请问怎么才能连接上pthread库？谢谢

pthead_t修改为：pthread_t；