CGAL users discussion list

[Maik Schulze <>]

Hello,
thank you Laurent Rineau for clearing up my confusion about the 
different versions of QT. Recompiling the CGALQt library did it. 
Actually, I tried that already, but I must have mixed up my backup libs.

Most of the demos now compile fine. A few still throw errors, but I can 
live with that.

Thanks again.

Sincerely,
Maik Schulze


Laurent Rineau schrieb:
> On Tuesday 09 October 2007 18:13:39 Maik Schulze wrote:
>   
> > I am working with the Microsoft Visual Studio 2005 Professional IDE
> > under Windows XP. My CGAL version is 3.3.1. All console applications are
> > compiling fine. Yet, I am not even sure which QT version is supposed to
> > be used with CGAL.
> >
> > As Trolltech does not seem to offer QT 3 anymore (at least not for
> > free)
> >     
>
> Trolltech has never offered Qt 3 for Windows (for free). Only Qt-2.3 had a 
> free port for Windows.
>
>   
> > , I looked for Q...Windows Edition, which offers an independent 
> > implementation at http://qtwin.sourceforge.net/qt3-win32/
> > I tried to compile the CGAL demos against several versions available at
> > the sourceforge website. Yet, none works. After converting the .vcproj
> > to VC8 and changing some minor properties of the project, I get the
> > following linker errors:
> >
> > 1>CGALQt-vc80-mt-gd.lib(Qt_widget.obj) : error LNK2005: "public:
> > __thiscall QString::~QString(void)" 
> > (??1QString@@QAE@XZ)
> >  already defined
> > in qt-mt3.lib(qt-mt3.dll)
> >     
>
> You need to recompile the CGALQt library, using "Q..3/Windows Free Edition". 
> The CGALQt library shipped with the CGAL installer has been compiled 
> using "Qt-3/Windows Commercial Edition", and is not binary compatible with 
> your version of Qt-3.
>
> If you do not want to recompile CGALQt, you will need to buy a Qt-3 commercial 
> edition (and a CGAL commercial license too).
>
>