Adding netcdf to buildroot

Hello,

I want to add the 'netcdf' package to buildroot. I achieved to make it visible at buildroot menus and partially compile it.
But I do not know how to make visible at buildroot menus, the configuration options of the 'netcdf'. Also some dependencies (fortran compiler, etc) of netcdf need to be taken into account.

Do you know a document or tutorial that explains how to make buildroot buildroot catch the configuration parameters of the new package?

Thanks,

Serni