How to link .o file to your c or c++ project using Netbeans !

You need to add your .o file as an external library. So just follow the following steps:

1. Go to Project Properties
2. Under the Build->Linker options, add a library to the Libraries section
3. Click 'Add Library File'
4. Navigate to your .o file and select the absolute path option
5. Clean and Rebuild

And it's done.