How to install?

[Bagunda]

root@homas:~/modbus-client-server# ls
LICENSE  README.md  inih  modbus-client.c  modbus-server.c  modbus-server.ini
root@homas:~/modbus-client-server# gcc inih/ini.c modbus-server.c -o modbus-server -std=gnu99 `mysql_config --cflags --libs` `pkg-config --libs --cflags libmodbus`
-bash: mysql_config: command not found
-bash: pkg-config: command not found
modbus-server.c:15:10: fatal error: mysql.h: No such file or directory
   15 | #include <mysql.h>
      |          ^~~~~~~~~
compilation terminated.