Hi, Simon

How have you defined the .def file to generate the .lib file for clapack?

It should include some lines like the following ones




On 12/01/2011 11:51 AM, Simon Mpasi wrote:

Hello ublas users,


I am having problems getting lapack routines to work.


I am using Microsoft Visual Studio 2010 (VC9) on Windows XP.  I installed boost_1_44 and the latest version of boost numeric bindings from boost sandbox.


I have no Fortran compiler, thus I need to use clapack.


The error message LNK2019 (in red below) when trying to link  complains about an unresolved external symbol _dgesv_.  This is due to the fact that the

routines in the lapack library have an underscore at the end and not at the front and back, i.e. dgesv_  and not _dgesv_.


I looked at  fortran.h and lapack_names.h.  The problem may be with the macro Fortan_ID (id) but I don’t know how to fix it.  Defining the symbol

BIND_FORTRAN_LOWERCASE or undefining it does not solve the problem.


Also, I wonder if generate_functions.hpp is where the offending underscore in front is coming from.


Thank you very much for all your help and assistance.


Simon Mpasi



>------ Rebuild All started: Project: testNumericBindings, Configuration: Debug Win32 ------

1>Deleting intermediate and output files for project 'testNumericBindings', configuration 'Debug|Win32'



1>using native typeof

1>c:\program files\boost\boost_1_44\boost\numeric\ublas\storage.hpp(94) : warning C4996: 'std::uninitialized_copy': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'

1>        c:\program files\microsoft visual studio 9.0\vc\include\memory(98) : see declaration of 'std::uninitialized_copy'

1>        c:\program files\boost\boost_1_44\boost\numeric\ublas\storage.hpp(89) : while compiling class template member function 'boost::numeric::ublas::unbounded_array<T>::unbounded_array(const boost::numeric::ublas::unbounded_array<T> &)'

1>        with

1>        [

1>            T=real_t

1>        ]

1>        c:\program files\boost\boost_1_44\boost\numeric\ublas\matrix.hpp(100) : see reference to class template instantiation 'boost::numeric::ublas::unbounded_array<T>' being compiled

1>        with

1>        [

1>            T=real_t

1>        ]

1>        c:\documents and settings\smpasi\my documents\visual studio 2008\projects\testnumericbindings\testnumericbindings\ublas_gesvd3.cc(31) : see reference to class template instantiation 'boost::numeric::ublas::matrix<T,L>' being compiled

1>        with

1>        [

1>            T=real_t,

1>            L=boost::numeric::ublas::column_major

1>        ]


1>   Creating library C:\Documents and Settings\smpasi\My Documents\Visual Studio 2008\Projects\testNumericBindings\Debug\testNumericBindings.lib and object C:\Documents and Settings\smpasi\My Documents\Visual Studio 2008\Projects\testNumericBindings\Debug\testNumericBindings.exp

1>ublas_gesvd3.obj : error LNK2019: unresolved external symbol _dgesvd_ referenced in function "int __cdecl boost::numeric::bindings::lapack::detail::gesvd(char,char,int,int,double *,int,double *,double *,int,double *,int,double *,int)" (?gesvd@detail@lapack@bindings@numeric@boost@@YAHDDHHPANH00H0H0H@Z)

1>C:\Documents and Settings\smpasi\My Documents\Visual Studio 2008\Projects\testNumericBindings\Debug\testNumericBindings.exe : fatal error LNK1120: 1 unresolved externals

1>Build log was saved at "file://c:\Documents and Settings\smpasi\My Documents\Visual Studio 2008\Projects\testNumericBindings\testNumericBindings\Debug\BuildLog.htm"

1>testNumericBindings - 2 error(s), 1 warning(s)

========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========


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