[18800] in s-news-athena
Re: [S] Re: S-News Digest V1 #519
daemon@ATHENA.MIT.EDU (Prof Brian D Ripley)
Fri Jul 30 12:30:15 1999
Date: Fri, 30 Jul 1999 17:23:21 +0100 (BST)
From: Prof Brian D Ripley <ripley@stats.ox.ac.uk>
To: Frank E Harrell Jr <fharrell@virginia.edu>
Cc: Michael Prager <Mike.Prager@noaa.gov>, s-news <s-news@wubios.wustl.edu>,
ALFRED.H.BALCH@stl.Monsanto.com
In-Reply-To: <14241.49122.460000.706353@gargle.gargle.HOWL>
Message-Id: <Pine.GSO.4.05.9907301710050.5821-100000@auk.stats>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Fri, 30 Jul 1999, Frank E Harrell Jr wrote:
>
> Michael - I stay away from DLLS because I need to call builtin-fortran
> modules that S+ provides for matrix operations. I would appreciate
> some info about compilers that produce .obj files that work with S+ as
> well as Watcom. Thanks -Frank
I am sure there are none that produce .obj files in Watcom format. Some
Fortran compilers can produce DLLs. One of the best available is the free
one, g77: see the V&R2 Programming Complements for how to use it. Another
perfectly viable option is to use f2c plus your favourite C compiler: this
does work with Visual C++.
You do need to be very careful with using DLLs that call inbuilt functions:
the calling conventions are not fully defined and Watcom and (e.g.) Visual
C++ do differ.
> Michael Prager writes:
> >
> > At 7/30/99 at 02:30 AM, <ALFRED.H.BALCH@stl.Monsanto.com> wrote:
> >
> > >Am I better off getting a copy of the Watcom compiler than a compiler that
> > >will be continued-e.g. Microsoft ?
> >
> > The Microsoft Fortran compiler was discontinued years ago, so that would be
> > a poor choice. During its existence, I saw frequent complaints of its
> > bugginess and lack of conformance to the Fortran standard.
> >
> > The Watcom compiler was a good one, but it was FORTRAN (77), an older
> > version of the language, and thus lacked most of the interesting features
> > of modern Fortran (95), the most notable in the context of S being
> > intrinsic array operations. I would not recommend that *anyone* purchase a
> > FORTRAN 77 compiler anymore.
But those intrinsic array operations do not match the F77 data structures
used by S.
I have tried both using dyn.load and dll.load extensively, the latter with
about half a dozen different compilers. It is no accident that all the code
in my SWin collection used Watcom and dyn.load. If I could not buy
those (and I would to ease my job) I would use the egcs-1.1.2-mingw32
versions of gcc/g77. The latter work well (as their use for the Windows
version of the other S-like system shows.)
[Please don't ask me where to find all these bits: try an Internet search.]
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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