Problem solving in the process of using mosquitto

1. To use mosquitto, either link its library files to compile, or download and install mosquitto on the system. After I installed it, I also successfully compiled my program. As a result, when running my executable file, it throwserror.

The reason is that the system cannot find the library file during execution.One is to add the path of libmosquitto.so.1 in the environment variable, and the other is to add it to /usr/local/lib.After mosquitto is compiled and installed, libmosquitto.so.1 will be under the lib of mosquitto.I am using the second method.

First step

sudo cp libmosquitto.so.1 /usr/local/lib

Second step

sudo ln -s /usr/local/lib/libmosquitto.so.1 /usr/lib/libmosquitto.so.1 ldconfig