Question

#include <my_global.h>
#include <mysql.h>

int main(int argc, char **argv)
{
  printf("MySQL client version: %s\n", mysql_get_client_info());
}

~$ gcc -o mysql-test MySQL-Test.c

im trying to execute this test program from terminal but get the following error message:

/tmp/cceEmI0I.o: In function main': MySQL-Test.c:(.text+0xa): undefined reference tomysql_get_client_info’

what is wrong? my system is ubuntu

Answer 1

MySQL comes with a special script called mysql_config. It provides you with useful information for compiling your MySQL client and connecting it to MySQL database server.

Pass --libs option – Libraries and options required to link with the MySQL client library.

$ mysql_config --libs

Typical Output:

-L/usr/lib64/mysql -lmysqlclient -lz -lcrypt -lnsl -lm -L/usr/lib64 -lssl -lcrypto

Now you can add this to your compile/link line:

gcc -o mysql-test MySQL-Test.c $(mysql_config --libs)