Re: [ublas] Lapack bindings: unresolved external symbol _dgesv

From: Preben Holm (preben_at_[hidden])
Date: 2007-11-01 06:36:50

Hi,

It seems you're not linking with the lapack library.

You need to install a lapack library (this could be the reference 
lapack, atlas-lapack or a special optimized library for your architecture).

And then set up your linker to use the library.

Best regards,
Preben Holm

Tunc Bahcecioglu skrev:
> Hi,
> I am using VSNET 2005 and trying to use lapack with the bindings. But I 
> get the following error:
> Error 4 error LNK2001: unresolved external symbol
> _dgesv boostLapackTry1.obj 
>  
> I put the lapack.lib,blas.lib and matgen.lib to the additional dependencies.
> I am trying to compile the following cods:
>  
> 
> #include
> 
> <boost/numeric/bindings/lapack/gesv.hpp>
> 
> #include
> 
> <boost/numeric/ublas/matrix.hpp>
> 
> #include
> 
> <boost/numeric/bindings/traits/ublas_matrix.hpp>
> 
> namespace
> 
> ublas = boost::numeric ::ublas;
> 
> namespace
> 
> lapack = boost::numeric ::bindings::lapack;
> 
> int
> 
> main()
> 
> {
> 
> ublas::matrix<double, ublas::column_major> A(3,3), B (3,1);
> 
> lapack::gesv(A, B);
> 
> return 0;
> 
> }
> 
> I am a newbie to both libraries. Can one tell me what I am missing here. 
> Help appreciated.
>  
> 
> 
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> 
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