From help-octave-request at bevo dot che dot wisc dot edu Tue Jan 13 23:15:21 2004
Subject: Re: Mkoctfile, need dynamic linking even for compiling a .cc file?
From: Paul Kienzle <pkienzle at users dot sourceforge dot net>
To: "Henry F. Mollet" <mollet at pacbell dot net>
Cc: Octave_post <help-octave at bevo dot che dot wisc dot edu>
Date: Wed, 14 Jan 2004 00:14:51 -0500


On Jan 13, 2004, at 11:55 PM, Henry F. Mollet wrote:

> Many thanks. These .oct files are very large!?

I solved that problem on windows by making a dynamic version
of libstdc++ (with lots of help).  Anyone care to take this on
for os x?

> Probably should rename the first one to MyHell.oct.

MyHell.oct must have the function FMyHell in it for the loader
to find it.  You can't rename the oct-file without changing the
name of the DEFUN_DLD in the .cc file.

> As you explained earlier, even if I had oregonator.m in the same 
> directory,
> oregonator.oct would be used. I saw no difference in speed when running
> oregegonator.m but I would have to incorporate cputime () into the 
> files
> because both are completed so quickly.

You won't see major gains until you move for-loops out
of octave and into C++.  Often you can do well enough
just by vectorizing loops, but some loops can't be
vectorized.

Paul Kienzle
pkienzle at users dot sf dot net



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