（学习笔记）gcc编译带pthread.h头文件的源码时需要的参数

今天敲了一个小程序，编译时出现错误：undefined reference pthread_create

原来由于pthread库不是Linux系统默认的库，连接时需要使用库libpthread.a,所以在使用pthread_create创建线程时，在编译中要加-lpthread参数:
gcc -o test -lpthread test.c

再查发现编译时参数写成 -pthread 也是可以的。

#include
#include
#include

#define NUMBER_OF_THREADS 10

void *print_hello_world(void *tid)
{
		printf("hello world.Grettings from thread%lu\n",pthread_self());
		pthread_exit(NULL);
}
int main()
{
		pthread_t threads[NUMBER_OF_THREADS];
		int status,i;

		for(i=0;i

编译后输入命令：

$./test

终端输出结果如下：

swift@swift-pliot:~/Cpractice/pthread_test$ ./test 
main here.Creating thread 0
main here.Creating thread 1
hello world.Grettings from thread140642204505856
main here.Creating thread 2
hello world.Grettings from thread140642196113152
main here.Creating thread 3
hello world.Grettings from thread140642187720448
main here.Creating thread 4
hello world.Grettings from thread140642059548416
main here.Creating thread 5
hello world.Grettings from thread140642177140480
main here.Creating thread 6
hello world.Grettings from thread140642168747776
main here.Creating thread 7
hello world.Grettings from thread140642160355072
main here.Creating thread 8
hello world.Grettings from thread140642151962368
main here.Creating thread 9
hello world.Grettings from thread140642143569664