Re: "Hello World" mex file: failed

[Steve C. Thompson]

Oh man!  I just got an email from David Bateman.  It turns out my
problem with "Hello, world" is trivial:

  mkoctfile-2.9.10 -o hello.oct --mex hello.c

doesn't work, but 

  mkoctfile-2.9.10 -o hello.mex --mex hello.c

does.  (The reason I had .oct was from a script I saw from
David---strange.)

Onward and upward.

Steve

On Fri, 2007-03-30 at 12:35 -0700, Steve Thompson wrote:
> Dear Group,
> 
> I've compiled the "Hello World" mex file from
> http://www.mathworks.com/support/tech-notes/1600/1605.html#example1
> 
> Here's what I get:
> 
>   $ cat hello.c
>   #include "mex.h"
>   void mexFunction(int nlhs, mxArray *plhs[],
>     int nrhs, const mxArray *prhs[]) {
>   mexPrintf("Hello, world!\n");
>   }
> 
>   $ mkoctfile-2.9.10 -o hello.oct --mex hello.c
> 
>   $ ls
>     ...
>   -rw-r--r-- 1 ... ...  137 2007-03-30 12:06 hello.c
>   -rw-r--r-- 1 ... ... 3.1K 2007-03-30 12:14 hello.o
>   -rwxr-xr-x 1 ... ... 7.0K 2007-03-30 12:14 hello.oct
>     ...
> 
>   $ octave-2.9.10
> 
>   octave-2.9.10:1> hello
>   error: `hello' undefined near line 1 column 1
>   octave-2.9.10:1> addpath ('./')
>   octave-2.9.10:2> hello
>   error: `hello' undefined near line 2 column 1
> 
> Why could this be?
> 
> Thanks.
> 
> Steve