Re: Compiling with Qhull

[Jarno Rajahalme]

On Jan 14, 2012, at 4:09 , ext Ben Abbott wrote:

> On Jan 13, 2012, at 2:17 PM, Muhali wrote:
> 
>>> I tried that version on MacOS 10.7.2 with gcc 4.5, but encountered an error
>>> with the "voronoi" diagram ...
>>> 
>>>     ../../run-octave -f -q -H -p . --eval "geometryimages ('voronoi', 
>>> 'eps');"
>> 
>> I have the same problem now when trying to compile the current stable tip
>> (81ee6b12adbc). Here is what I get (running Ubuntu Natty):
>> 
>> make[3]: Entering directory `/usr/src/octave/doc/interpreter'
>> ../../run-octave -f -q -H -p . --eval "geometryimages ('voronoi', 'eps');"
>> panic: Segmentation fault -- stopping myself...
>> attempting to save variables to `octave-core'...
>> save to `octave-core' complete
>> make[3]: *** [voronoi.eps] Segmentation fault
>> 
>> M.
> 
> What version of qhull do you have installed ?
> 
> If it is qhull-2011, you'll want to install the 2010 version, or apply the 
> attached patch.
> 
> Ben
> 
> 
> <qhull.diff>

I tried the patch, but still had one related failure on make check (using qhull 
2011):

>>>>> processing 
>>>>> /Users/Shared/Development/octave-3.6.0/src/DLD-FUNCTIONS/convhulln.cc
  ***** testif HAVE_QHULL
 cube = [0 0 0;1 0 0;1 1 0;0 1 0;0 0 1;1 0 1;1 1 1;0 1 1];
 [h, v] = convhulln (cube);
 assert (size (h), [6 4]); 
 h = sortrows (sort (h, 2), [1:4]);
 assert (h, [1 2 3 4; 1 2 5 6; 1 4 5 8; 2 3 6 7; 3 4 7 8; 5 6 7 8]);
 assert (v, 1, 10*eps);
!!!!! test failed
assert (size (h),[6, 4]) expected
   6   4
but got
   12    3
values do not match


This failure does not appear when using qhull 2010.

I'm using up-to-date macports to satisfy dependencies. 

Regards,

  Jarno