CGAL users discussion list

[Laurent Saboret <>]

Hi Thibault,

LAPACK seems properly installed on your machine and CMake detects it.

On Windows, LAPACK is added to link step via a feature called auto-linking.
Please add
#define CGAL_LIB_DIAGNOSTIC
at the beginning of e.g. jet_smoothing_example.cpp, compile it and post the compiler's output.

Regards,
Laurent Saboret


Thibault LUGINBÜHL wrote:

Thanks for your help,

Here is a screenshot of my folder : C:\Program Files\CGAL-3.5.1\auxiliary\taucs\lib


Here is the output of CMake in the folder : C:\Program Files\CGAL-3.5.1\examples\Point_set_processing_3 :

Build type: Release

USING CXXFLAGS = ' /DWIN32 /D_WINDOWS /W3 /Zm1000 /EHsc /GR -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /fp:strict /fp:except- /MD /O2 /Ob2 /D NDEBUG'

USING EXEFLAGS = ' /STACK:10000000 /machine:I386 /INCREMENTAL:NO'

Targetting Visual Studio 9 2008

Target build enviroment supports auto-linking

Using VC90 compiler.

Generator uses intermediate configuration directory: $(OutDir)

USING DEBUG CXXFLAGS = ' /DWIN32 /D_WINDOWS /W3 /Zm1000 /EHa /GR -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /fp:strict /fp:except- /FR /wd4267 /wd4311 /wd4800 /wd4503 /wd4244 /wd4345 /wd4996 /wd4396 /wd4018 /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1'

USING DEBUG EXEFLAGS = ' /STACK:10000000 /machine:I386 /LARGEADDRESSAWARE /debug /INCREMENTAL:YES'

USING RELEASE CXXFLAGS = ' /DWIN32 /D_WINDOWS /W3 /Zm1000 /EHa /GR -D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS /fp:strict /fp:except- /FR /wd4267 /wd4311 /wd4800 /wd4503 /wd4244 /wd4345 /wd4996 /wd4396 /wd4018 /MD /O2 /Ob2 /D NDEBUG'

USING RELEASE EXEFLAGS = ' /STACK:10000000 /machine:I386 /LARGEADDRESSAWARE /INCREMENTAL:NO'

LAPACK include: C:/Program Files/CGAL-3.5.1/auxiliary/taucs/include

LAPACK definitions:

LAPACK library directories: C:/Program Files/CGAL-3.5.1/auxiliary/taucs/lib

LAPACK link flags:

BLAS include: C:/Program Files/CGAL-3.5.1/auxiliary/taucs/include

BLAS definitions:

BLAS library directories: C:/Program Files/CGAL-3.5.1/auxiliary/taucs/lib

BLAS link flags:

Configuring done

Generating done

Laurent Saboret a écrit :

Hi Thibault,

On Windows, CGAL searches for LAPACK in P:/ath/to/TAUCS/auxiliary/taucs.
Please post the content of this folder on your PC.

LAPACK should be detected at CMake stage.
Please run again CMake in e.g.  jet_smoothing_example's folder and post its output
(I recommend you do use cmake-gui to see CMake's output).

Best regards,
Laurent Saboret


Thibault LUGINBÜHL wrote:

Hi Laurent,

Thanks for your answer, but I checked it.
I have lapack.lib in the taucs directory, I even tried to manually add the directory and the name of the lib in the options of visual studio, but the problem remains the same.
I also tried to download the latest version of clapack, compiled it and tried to use this one but nothing changed.
The exact same error appears in different examples : jet_smoothing_example, single_estimation, mesh_estimation, Compute_Ridges_Umbilics.
The error is :
error LNK2019: unresolved external symbol _dgelss_ referenced in function "void __cdecl CGAL::LAPACK::dgelss(int *,int *,int *,double *,int *,double *,int *,double *,double *,int *,double *,int *,int *)" (?dgelss@LAPACK@CGAL@@YAXPAH00PAN010110100@Z)

Regards,
Thibault LUGINBÜHL

Laurent Saboret a écrit :

Hi Thibault,

You need the LAPACK library to compile the normal estimation example.

To install it:
Run CGAL 3.5.1 Windows installer, select your platform and compiler, and check the option to install LAPACK, BLAS and TAUCS libraries.
Then follow the instructions to compile CGAL.

Best regards,
Laurent Saboret


wrote:

Hi,

I have the same problem but on winXP with VS2008.
I used cmake2.6 to generate all examples en demos. But the projects using
lapack failed at the linking. I have the same message : CGAL::LAPACK::dgelss
couldn't be found. (I try to compile the normal estimation project in the point
set processing package)
I don't have the same options in cmake as you have on OSX10.6.2 apparently.

Does anyone knows how to make it work under this configuration XP SP2 32bit,
VS2008 ?

Thanks in advance,
Thibault LUGINBÜHL
 

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