linux mysql 找不到 <mysql/mysql.h>

   MYSQL mysql;
    MYSQL_RES *result;
    MYSQL_ROW row;

    mysql_init(&mysql);
    mysql_real_connect(&mysql, "127.0.0.1", "root", "123456",
                       "mydb", 0, NULL, 0);
    mysql_query(&mysql, "select * from friends");
    result = mysql_store_result(&mysql);
    while ((row = mysql_fetch_row(result)))
    {
        cout<< row[0]<< " | "<< row[1]<< " | "<< row[2]<< " | "
           << row[3]<< " | "<< row[4]<< " | "<< row[5]<< " | "
           << endl;
    }
    mysql_free_result(result);
    mysql_close(&mysql);
   
    return 0;
}

makefile

mydb:main.cpp
    g++ -o mydb main.cpp -lmysqlclient -I/usr/include/mysql/ -L/usr/lib/mysql