From help-octave-request at bevo dot che dot wisc dot edu Tue Jan 13 22:57:02 2004
Subject: Re: Mkoctfile, need dynamic linking even for compiling a .cc file?
From: "Henry F. Mollet" <mollet at pacbell dot net>
To: Paul Kienzle <pkienzle at users dot sourceforge dot net>
CC: Octave_post <help-octave at bevo dot che dot wisc dot edu>
Date: Tue, 13 Jan 2004 20:55:34 -0800

Many thanks. These .oct files are very large!? Probably should rename the
first one to MyHell.oct.
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.
Henry

-rwxr-xr-x  1 mollet  staff  1010092 Jan 13 20:03 myhello.oct

-rw-r--r--  1 mollet  staff      577 Jan 13 20:08 myoregonator.cc
-rw-r--r--  1 mollet  staff   268080 Jan 13 20:11 myoregonator.o
-rwxr-xr-x  1 mollet  staff  1026260 Jan 13 20:11 myoregonator.oct

octave:5> oregonator ([1,2,3], 0)
ans =

   77.269353
   -0.012942
   -0.322000




on 1/13/04 7:52 PM, Paul Kienzle at pkienzle at users dot sf dot net wrote:

> Is this possibly because you don't have write permission
> for the directory you are in [/doc/octave/examples]?  The
> C example works because you are in one of your own
> directories [~/cando].
> 
> Copy the oregonator.cc example somewhere in your
> local path and try again.
> 
> Paul Kienzle
> pkienzle at users dot sf dot net
> 
> On Jan 13, 2004, at 9:54 PM, Henry F. Mollet wrote:
> 
>> To *use* an .oct file, I must have an Octave version which supports
>> dynamic
>> linkng, which I don't have yet. Presumably it also means that I cannot
>> even
>> *compile* a .cc source file (to make my .oct executable file) for
>> practice
>> purposes? In contrast I can compile and run my own hello.c.
>> Henry
>> 
>> 
>> [~] tcsh:17> cd ../../sw/share/doc/octave/examples
>> [doc/octave/examples] tcsh:18> ls
>> Makefile                  info-emacs-info           oregonator.cc
>> Makefile.in               info-emacs-octave-help    oregonator.m
>> hello.cc                  make_int.cc
>> 
>> [doc/octave/examples] tcsh:19> mkoctfile oregonator.cc
>> /var/tmp//cc5GNwcZ.s:unknown:FATAL:can't create output file:
>> oregonator.o
>> 
>> [doc/octave/examples] tcsh:31> mkoctfile hello.cc
>> /var/tmp//cc9Bo7wZ.s:unknown:FATAL:can't create output file: hello.o
>> 
>> [~/cando] tcsh:36> gcc hello.c
>> hello.c: In function `main':
>> hello.c:3: warning: return type of `main' is not `int'
>> [~/cando] tcsh:37> a.out
>> Hello, World!
>> [~/cando] tcsh:38> cat hello.c
>> #include <stdio.h>
>> void main()
>> {
>>         printf("Hello, World!\n");
>> }
>> 
>> 
>> 
>> 
>> 
>> -------------------------------------------------------------
>> Octave is freely available under the terms of the GNU GPL.
>> 
>> Octave's home on the web:  http://www.octave.org
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-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
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