/lib/libgcc_s.so.1: version GCC_4.6.0 required by /usr/local/lib/gcc47/libgfortran.so.3 not found

[Anton Shterenlikht]

I haven't tried gfortran on amd64 for a long time,
so I'm probably doing something wrong:

On ia64 11-current:

$ cat z.f90 
end
$ gfortran47 z.f90 
$ ./a.out 
$ 

On amd64 11-current:

$ cat z.f90 
end
$ gfortran47 z.f90 
$ ./a.out 
/lib/libgcc_s.so.1: version GCC_4.6.0 required by /usr/local/lib/gcc47/libgfortran.so.3 not found
$ 
$ gfortran48 z.f90
$ ./a.out
/lib/libgcc_s.so.1: version GCC_4.6.0 required by /usr/local/lib/gcc47/libgfortran.so.3 not found
$ gfortran49 z.f90
$ ./a.out
/lib/libgcc_s.so.1: version GCC_4.6.0 required by /usr/local/lib/gcc47/libgfortran.so.3 not found
$ 

On both systems gcc ports are installed
via pkg - the official packages on amd64,
and my own packages on ia64.

Am I missing on some compiler/linker options?
Or did gcc packages did not istall correctly
on amd64?

Thanks

Anton