How do you make it work with gfortran?

I think the link I gave you should answer that question. (Though it may not get you all the way.)

can you guide me?

Not really ... I don't use fortran.
If you can get to the stage where the undefined reference to fdate_ stops the build (as in the earlier link) then there's a thread here that might help.

The gcc mailing list is probably a better place to ask about this, though it may not be on topic even there.
Is there a pftools forum somewhere ?

Cheers,
Rob