安装完FastDFS以后，执行make.sh命令结果报错，如下：
1./home/FastDFS/FastDFS/tracker/../common/sched_thread.c:493: undefined reference to `pthread_create' ../common/pthread_func.o:
2.In function `init_pthread_lock': /home/FastDFS/FastDFS/tracker/../common/pthread_func.c:32: undefined reference to `pthread_mutexattr_init'
3./home/FastDFS/FastDFS/tracker/../common/pthread_func.c:40: undefined reference to `pthread_mutexattr_settype'
4./home/FastDFS/FastDFS/tracker/../common/pthread_func.c:57: undefined reference to `pthread_mutexattr_destroy' ../common/pthread_func.o:
5.In function `init_pthread_attr': /home/FastDFS/FastDFS/tracker/../common/pthread_func.c:84: undefined reference to `pthread_attr_getstacksize'
6./home/FastDFS/FastDFS/tracker/../common/pthread_func.c:115: undefined reference to `pthread_attr_setstacksize' ../common/pthread_func.o:
7.In function `create_work_threads': /home/FastDFS/FastDFS/tracker/../common/pthread_func.c:156: undefined reference to `pthread_create'
8.../common/pthread_func.o:
9.In function `kill_work_threads': /home/FastDFS/FastDFS/tracker/../common/pthread_func.c:182: undefined reference to `pthread_kill'
10.collect2: ld 返回 1 make: *** [fdfs_monitor] 错误 1
于是开始了网上搜索问题，得知，其实是不同的系统中pthread位置不一样，做法就是找到你的系统中所需要的libpthread.so文件位置，直接find就可以找到了；
步骤：
1、find / -name 'libpthread.a' 找到目录
2、find / -name 'libpthread.so'找到目录，
分别将以上目录，替换掉make.sh中的对应目录，修改完保存，重新执行./make.sh ./make.sh install成功。