mosquitto: error while loading shared libraries: libwebsockets.so.12: cannot open shared object file

错误描述：

# mosquitto -c /etc/mosquitto/mosquitto.conf -d
mosquitto: error while loading shared libraries: libwebsockets.so.12: cannot open shared object file: No such file or directory

解决方案：修改/etc/ld.so.conf文件，加入libwebsockets的so路径，如下

 cat /etc/ld.so.conf

include ld.so.conf.d/*.conf
/usr/local/src/libwebsockets-2.4.1/build/lib 

　　执行命令

 ldconfig

　　重新开启mosquitto

mosquitto -c /etc/mosquitto/mosquitto.conf -d