[netcdfgroup] Determining format options available in netcdf library

["Gregory Sjaardema" <gdsjaar@xxxxxxxxxx>]

Is there a way for an application linked to a netcdf library to 
determine whether the netcdf-4 capabilities are present in the library?

I have an application that I want to normally write a classic netcdf-3 
file, but if the netcdf library was compiled with the netcdf-4 option 
enabled, it should create a netcdf-4 file.  It looks like the netcdf.h 
file is the same for both options and I don't see any api function that 
would give the information.

Thanks,
--Greg