Basic db-mysql setup error

I just started using node.js for my project and tried making a connection to MySQL and inserting basic values. But I keep getting the following error:

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: Unable to load shared library /Users/****/nodeJS/node_modules/db-mysql/build/Release/mysql_bindings.node
    at Object..node (module.js:472:11)
    at Module.load (module.js:348:31)
    at Function._load (module.js:308:12)
    at Module.require (module.js:354:17)
    at require (module.js:370:17)
    at Object.<anonymous> (/Users/****/nodeJS/node_modules/db-mysql/db-mysql.js:18:15)
    at Module._compile (module.js:441:26)
    at Object..js (module.js:459:10)
    at Module.load (module.js:348:31)
    at Function._load (module.js:308:12)

I did as was instructed, I specified the MYSQL_CONFIG environment variable:

$ export MYSQL_CONFIG=/usr/local/mysql/bin/mysql_config