Re: cvf/ivf fortran project I'd like to "convert" to gfortran

[Craig Powers <craig dot powers at gmail dot com>]

Tobias Burnus wrote:
> Steven Bosscher wrote:
> > > Unfortunately, the project has source files that contain USE
> > > statements looking for the portability modules "IFPORT" or
> > > "DFPORT." I'm not at all sure what features/functions of "PORT"
> > > modules are needed. Is there an equivalent "PORT" module for
> > > gfortran. Can you suggest a work-around?
> > >     
> > DFPORT is the DEC Fortran portability library. Intel's Fortran
> > compiler has historic links to the DEC compiler, and apparently they
> > still have this library, just renamed Intel Fortran portability
> > library i.e. IFPORT.
>
> I think DFPORT/IFPORT is based on the withdrawn IEEE standard "POSIX
> Fortran 77 Language Interfaces (IEEE Std 1003.9-1992)", which allows a
> Fortran program to access the system beyond the means defined in the
> Fortran standard. DFPORT/IFPORT wrap those in nice modules and probably
> add some more procedures. (NAG's f90_* modules are another way to make
> POSIX functions accessible.)

I don't think that's right.  I'll have to check my documentation when I 
get in to school, but I believe the F77 Posix interface is a different 
module, something like IFPOSIX or the like.  The IFPORT/DFPORT is just a 
number of convenience routines.  Again, I'd have to get to school and 
check my code to be sure, but I think one thing I use out of that module 
is SLEEP.