Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!apple!well!rchrd
From: rchrd@well.sf.ca.us (Richard Friedman)
Newsgroups: comp.lang.fortran
Subject: Re: Tools for porting fortran?
Message-ID: <23175@well.sf.ca.us>
Date: 15 Feb 91 17:49:44 GMT
References: <91044.104254AMB@SLACVM.SLAC.STANFORD.EDU>
Organization: Pacific-Sierra Research
Lines: 26

AMB@SLACVM.SLAC.STANFORD.EDU writes:

>In C, there are compiler directives (#if, #else, etc) for this.
>Anyone have a method, or commercial product, for doing this to fortran?

On most systems the C preprocessor can be called directly (cpp ...),
to give the same functionality for fortran. For example, on Cray UNICOS:

     cpp -P small_mdl.fig source.f > source.x.f
     cf77 -o myprog source.x.f

Unfortunatly on UNICOS cf77 wont accept a pipe so you have to create
an intermediate file from the output of cpp.  Note the usage here,
allowing the user to create "configuration files" (xyz.fig, say)
which contain a set of definitions (in the example, perhaps small_mdl.fig
is the set of defines to specify compilation of a small size model for
source.f.. say).

We are currently implementing this sort of "configuration control" scheme
in our FORGE/MIMDizer product, thus allowing the user to maintain a variety
of "flavors" of a source code within a single file.
-- 
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