CGAL users discussion list

[Arnaldo Luis Lixandrão Filho <>]

Hi all,

I'm a new user of CGAL and i'm trying make CGAL part of my software. I'm using Visual Studio 2008 and CGAL 3.3.1. I build CGAL and test the exemples. All is working fine for the examples. But when i try to build the software with some includes of CGAL, for example the Minkowski Sum

//! \file examples/Minkowski_sum_2/ex_approx_offset.cpp
// Computing the approximated offset of a polygon.

#include "ms_rational_nt.h"
#include <CGAL/Lazy_exact_nt.h>
#include <CGAL/Cartesian.h>

#include <CGAL/approximated_offset_2.h>
#include <CGAL/offset_polygon_2.h>
#include <CGAL/Timer.h>
#include <iostream>

typedef CGAL::Lazy_exact_nt<Number_type>           Lazy_exact_nt;

// instead of
//typedef CGAL::Cartesian<Lazy_exact_nt>             Kernel;
struct Kernel : public CGAL::Cartesian<Lazy_exact_nt> {};
typedef CGAL::Polygon_2<Kernel>                    Polygon_2;

typedef CGAL::Gps_circle_segment_traits_2<Kernel>  Gps_traits_2;
typedef Gps_traits_2::Polygon_2                    Offset_polygon_2;
typedef Gps_traits_2::Polygon_with_holes_2         Offset_polygon_with_holes_2;

Some strange erros appears at build log:

1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/float.h(133) : warning C4244: 'return' : conversion from 'double' to 'float', possible loss of data
1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(87) : error C2143: syntax error : missing '}' before 'constant'

1>        C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(605) : see reference to class template instantiation 'CGAL::Sweep_line_event<SweepLineTraits_2,Subcurve>' being compiled
1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(87) : error C2059: syntax error : 'constant'

1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(101) : error C2143: syntax error : missing ';' before '}'
1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(101) : error C2238: unexpected token(s) preceding ';'

1>C:\LIBSVS\CGAL-3.3.1\include\CGAL/Sweep_line_2/Sweep_line_event.h(101) : error C2146: syntax error : missing ';' before identifier 'Attribute'

Someone can Help me please?

Best,

--
Arnaldo Luis Lixandrão Filho
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