Newsgroups: comp.os.msdos.djgpp
From: fanzhang AT eecg DOT toronto DOT edu (Fan Zhang)
Subject: Re: MPI lib with g77 (Question 2)
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Date: 9 Feb 2000 01:26:24 GMT
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To: djgpp AT delorie DOT com
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Hans-Bernhard Broeker wrote:

> Fan Zhang <fanzhang AT eecg DOT toronto DOT edu> wrote:
> > Hi,
>
> > I'm trying to compile a bunch of Fortran programs using MPI with g77.
>
> Care telling what that 'MPI' is?
>

The MPI library is the standard Message Passing Interface library using in the

parallel computation. Since it is standard, I should link to it without
problem.


>
> > But it turns out that after g77 compiled, the MPI functions in the
> > object files change it's name to lower case.
>
> They don't exactly "change" to lower case, they are lower case all the
> time.  FORTRAN 77, the language compiled by g77, is 100%
> case-insensitive --- it's the one where you can write 'r Et   U      r  N'
> and get the exact same effect as if you'd typed 'return' or 'RETURN'.
>

Since we can get the g77 source code, is it possible for us to change it so
that even under DOS enviroment it is case-sensitive?

I found that the f2c did the same thing to "change" the subroutines to lower
case. [ ie. MPI_Something() is change to mpi_something__() ].

Is there anybody know how to make a change in either g77 source code or f2c
source code so that we can make a case sensitive g77 or f2c? (And also won't
include those double under scores "__")

Thanks,

Fan Zhang