[MITgcm-devel] gfortran 4.0.0 an ptracers_readparms

[Ed Hill]

On Sun, 2006-03-12 at 08:00 +0100, Martin Losch wrote: 
> Hi Ed,
> I now have gfortran 4.2.0 on my Apple PowerBook and the code compiles  
> and runs (although compiling with gfortran is really slow).
> However, I don't seem to be able to use the netcdf libraries that  
> work with g77. Do you know anything about that. I have tried to have  
> a look at the name mangling with "nm", but it seems that  the  
> underscores are at the right places (if I could only interpret the  
> output of nm (o:)

Hi Martin,

Yes, name-mangling has changed between g77 and gfortran.  For g77,
you'll want to use a recent (3.6.0 or later) version of netCDF thats
been compiled with:

  CPPFLAGS="-fPIC"

and for gfortran you should use:

  CPPFLAGS="-fPIC -DpgiFortran"

And you can install the two different static libs that result side-by-
side with different names.  For instance, the netcdf RPMs that I
maintain for Fedora Extras come with libs that are named:

  /usr/lib/netcdf-3/libnetcdf.a
  /usr/lib/netcdf-3/libnetcdf_g77.a

so that you can use 

  g77:       -L/usr/lib/netcdf-3 -lnetcdf_g77
  gfortran:  -L/usr/lib/netcdf-3 -lnetcdf

and things will work for both.

Ed

-- 
Edward H. Hill III, PhD
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