CGAL users discussion list

[Laurent Saboret <>]

Hi Yuri,

jet_smooth_point_set and jet_estimate_normals methods use Lapack library. Your crash occurs in Lapack call dgelss.

CGAL includes a fairly complex system to link with Lapack (and Blas) on each platform. This code is based on CMake, thus I recommend you to use CMake. See demo/Surface_reconstruction_points_3/Point_set_demo for an example using CMake, Qt, and jet_smooth_point_set and jet_estimate_normals methods.

If you really wish to use qmake, you will be on your own.
You will have to mimick the behavior of FindLAPACK.cmake, CGAL_UseLAPACK.cmake, FindBLAS.cmake, CGAL_UseBLAS.cmake and FindF2C.cmake (in cmake/modules).
On Mac, this means basically:
- link with the Accelerate framework
- #define CGAL_USE_F2C

Best regards,
Laurent Saboret


Yuri wrote:

hi, I have a problem with these 2 jet functions in my QT Project: jet_smooth_point_set and jet_estimate_normals

My operating system is Mac OS X snow leopard. I am using the QT Creator IDE.

http://www.cgal.org/Manual/3.5/doc_html/cgal_manual/Point_set_processing_3/Chapter_main.html#Section_54.6

examples/Point_set_processing_3/jet_smoothing_example.cpp

If I 'make' and run the example in the CGAL-build-dir it works.

When I include it in my QMAKE project file it does compile without error (only some unused parameter warnings from 'work', 'lwork' and 'kernel'

But then it crashes when run. 

I think that I didn't include some libraries or similar. I don't understand CMAKE and the created makefile so well.

The other functions from the point set processing section and also the poisson surface reconstruction function works.

Another question is. Can I use static and dynamic libraries in my project?

Here are the debugger errrors:

Depth | Function

0 dgelss_

1 CGAL::Lapack_svd::solve

2 CGAL::Monge_via_jet_fitting<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >, CGAL::Cartesian<double>, CGAL::Lapack_svd>::solve_linear_system

3 CGAL::Monge_via_jet_fitting<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >, CGAL::Cartesian<double>, CGAL::Lapack_svd>::operator()<__gnu_cxx::__normal_iterator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >*, std::vector<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >, std::allocator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > > > > >

4 CGAL::CGALi::jet_smooth_point<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> >, CGAL::Kd_tree<CGAL::Search_traits_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >, CGAL::Sliding_midpoint<CGAL::Search_traits_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >, CGAL::Plane_separator<double> >, CGAL::Boolean_tag<true> > >

5 CGAL::jet_smooth_point_set<__gnu_cxx::__normal_iterator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >*, std::vector<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >, std::allocator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > > > >, CGAL::Dereference_property_map<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > >, CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >

6 CGAL::jet_smooth_point_set<__gnu_cxx::__normal_iterator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >*, std::vector<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > >, std::allocator<CGAL::Point_3<CGAL::Filtered_kernel<CGAL::Simple_cartesian<double> > > > > > >

7 main

This is my .pro file:

# -------------------------------------------------

# Project created by QtCreator 2009-11-12T16:56:37

# -------------------------------------------------

QT += opengl

QT -= core \

gui

TARGET = test

CONFIG += console

CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

HEADERS +=

# CGAL

QMAKE_CXXFLAGS += -frounding-math

INCLUDEPATH += /usr/local/include

LIBS += /usr/local/lib64/libtaucs.a

LIBS += /usr/local/lib64/libf2c.a

LIBS += /usr/local/lib64/libmetis.a

INCLUDEPATH += /opt/local/include

LIBS += /opt/local/lib/libmpfr.a

LIBS += /opt/local/lib/libgmp.a

LIBS += /opt/local/lib/libgmpxx.a

INCLUDEPATH += /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/Headers

LIBS += /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib

LIBS += /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib

INCLUDEPATH += /Developer/CGAL-3.5/install/include/

LIBS += /Developer/CGAL-3.5/install/lib/libCGAL.a

LIBS += /Developer/CGAL-3.5/install/lib/libCGAL_Core.a

LIBS += /Developer/CGAL-3.5/install/lib/libCGAL_ImageIO.a

LIBS += /Developer/CGAL-3.5/install/lib/libCGAL_PDB.a

LIBS += /Developer/CGAL-3.5/install/lib/libCGAL_Qt4.a 

thanks,

Yuri

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