Re: compiling development sources

[Carlo de Falco]

On 11 Feb 2010, at 03:39, Ben Abbott wrote:

> It may be that your qr trouble has to do with lacking a qrupdate  
> package?
>
> I began constructing a qrupdate package for Fink, but gave up before  
> completing it. However, the result is sufficient for Octave's  
> purposes.
>
>         
> http://sourceforge.net/tracker/index.php?func=detail&aid=2861045&group_id=17203&atid=414256
>
> If you place the info, patch, and tar.gz files in the locations  
> below, Fink will see them and allow you to install qrupdate (you may  
> need to scanpackages and index).
>
>         /sw/fink/src/qrupdate-1.0.1.tar.gz
>         /sw/fink/10.6/local/main/finkinfo/sci/qrupdate.info
>         /sw/fink/10.6/local/main/finkinfo/sci/qrupdate.patch
>
> You can find the qrupdate-1.0.1.tar.gz file at the link below.
>
>         http://sourceforge.net/projects/qrupdate/files/
>
> I haven't tried to produce a Fink package for the more recent  
> qrupdate-1.1.x. If you are interested in trying, at a minimum,  
> you'll need to modify qrupdate.info to reference the proper tar.gz  
> file and change the associated MD5 as well.
>
> Ben

Hi,

I have compiled qrupdate-1.1 with g95 and I am linkng against it.
If, eventually, I get my Octave install working I will consider  
creating a fink package and/or an application bundle
but at the moment I am still stuck with the crashes during 'make check'

running the tests in qr.cc manually I can proceed without error until  
the following:


 Ac = [0.620405 + 0.956953i  0.480013 + 0.048806i  0.402627 +  
0.338171i;
      0.589077 + 0.658457i  0.013205 + 0.279323i  0.229284 + 0.721929i;
      0.092758 + 0.345687i  0.928679 + 0.241052i  0.764536 + 0.832406i;
      0.912098 + 0.721024i  0.049018 + 0.269452i  0.730029 + 0.796517i;
      0.112849 + 0.603871i  0.486352 + 0.142337i  0.355646 +  
0.151496i ];

 uc = [0.20351 + 0.05401i;
      0.13141 + 0.43708i;
      0.29808 + 0.08789i;
      0.69821 + 0.38844i;
      0.74871 + 0.25821i ];

 vc = [0.85839 + 0.29468i;
      0.20820 + 0.93090i;
      0.86184 + 0.34689i ];


 [Q,R] = qr(Ac);
 [Q,R] = qrupdate(Q,R,uc,vc);

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: 13 at address: 0x00000000
0x8fe18c02 in __dyld_misaligned_stack_error ()
(gdb)

so it seems qrupdate works for real matrices/vectors but fails for  
complex?
any clue what can be wrong? is there any more information I should  
provide?

c.