24.08.10, 22:34, "David Lonie" <lonieda...@gmail.com>:

> On Tue, Aug 24, 2010 at 1:51 PM, Noel O'Boyle  wrote:
>  > On 24 August 2010 18:22, David Lonie  wrote:
>  >> On Tue, Aug 24, 2010 at 1:20 PM, Geoffrey Hutchison
>  >>  wrote:
>  >>>> This has happened a few times recently -- Is Eigen now an
>  >>>> official dependency of OpenBabel? If not, should it be?
>  >>>
>  >>> No, Eigen is not (yet) a dependency of Open Babel. For at least the 2.x 
> series, we've tried to avoid required dependencies. Open Babel currently 
> detects whether you have Eigen installed and will enable optional features. 
> This is similar to behavior with LibXML2 and other packages.
>  >>>
>  >>> I suspect the problem is that you have an old version of Eigen 2.x which 
> did not include the "Dense" header properly. Try upgrading Eigen.
>  >>
>  >> Can we add an option to cmake so this can be disabled? Some distros
>  >> don't update their eigen packages very often.
>  >
>  > What is the value EIGEN2_INCLUDE_DIR in your CMakeCache.txt?
>  
>  EIGEN2_INCLUDE_DIR:PATH=/usr/include/eigen2
>  
>  Geoff was correct -- I updated to the latest eigen and it works now.

Dense header is included into all versions of 2.x, but it wasn't installed by 
make install operation. If you installed it with manual copying of headers, it 
would work with earlier version too

I think we need to add special check for this header, and disable OBAlign if 
it's missing

-- 
Regards,
Konstantin

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