gfortran is now very good:

gcc-gfortran.x86_64 : Fortran support

if you want to spend money, ifort (Intel fortran) is what we use at work.

gfortran will compile legacy f77 code, as well as f90 and f95 (and f2003?).

cheers,

jim. 


On 31/10/2011, at 8:58 PM, Todd And Margo Chester wrote:

> Hi Guys,
> 
>   I have an extremely intelligent retired college professor for
> a customer.  He writes doctor level text books on structural
> engineering.  He is a sweet old duffer with an I.Q. I would guess
> at 200.
> 
>   Part of what he does in his text books is give Fortran code to
> go along with the extremely complicated equations in his books.
> He has asked me to put him together a new computer (I figure
> Fedora Core 15 x64 bit).
> 
>   I do not know squat about Fortran compilers.
> 
>   Question: is there a good Fortran environment I should put on
> his new computer?  Bear in mind when you answer, that if my customer
> likes your suggestion, doctoral engineering students will be required
> to use it (tormented with it).
> 
> Many thanks,
> -T