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//Description: 学习《Linux网络编程（第二版）》一书时的一点笔记

//Create Date: 2018-10-16 11:30:25

//Author: channy

Linux_Network_Programming_Notes

实验环境： Ubuntu 16.04, g++

4.4.1 pthread.c

thread.cpp: In function ‘void* start_routine(void*)’:

thread.cpp:13:17: error: invalid conversion from ‘void’ to ‘int’ [-fpermissive]

int *running = arg;

-> 需要显式转换(int*)arg

/usr/include/pthread.h:233:12: note: initializing argument 3 of ‘int pthread_create(pthread_t, const pthread_attr_t, void* ()(void), void*)’ extern int pthread_create (pthread_t *__restrict __newthread,

-> start_routine不用转换

thread.cpp:40:35: error: invalid conversion from ‘void’ to ‘void**’ [-fpermissive] pthread_join(pt, (void)&ret_join);

->ret_join改为void *

thread.cpp:(.text+0x103): undefined reference to ‘pthread_create’

thread.cpp:(.text+0x171): undefined reference to ‘pthread_join’

-> 需要加参数-lpthread,因为pthread库不是 Linux 系统默认的库， g++ thread.cpp -lpthread

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