CGAL users discussion list

[Andreas Fabri <>]

Hello,

The CGAL installer allows to download 32 and 64 bit versions of
the 3rd party libraries.

Note however that Qt4 is not officially supported on VC10 64bit.

andreas


On 16/11/2011 16:39, Vivien Clauzon wrote:
> Hello,
>
> I've just tried to use CGAL for a win64 visual studio 10 project and i'm
> facing quite an issue. Indeed, allthough my project compiles and works
> fine in 32 bits, I cannot get it to compile in 64 bits because of the
> missing gmp and mpfr in CGAL-3.9\auxiliary\gmp\lib and the missing tauc
> in CGAL-3.9\auxiliary\taucs.
>
> I can find 64 bits pre build tauc binaries, or I can build it myself if
> requiered, but I can't find a way to get 64 bits gmp and mpfr.
>
> It seems that mpir (http://mpir.org/) can provide a solution but entry
> points in mpir.lib and gmp.lib are differents as cgal is looking for
> things like "__imp___gmpz_clear" while mpir is providing "__gmpz_clear".
>
> Of course, in the documentation of CGAL, i can read :/
>
> GmpandMpfrare libraries for multi precision integers and rational
> numbers, and for multi precision floating point numbers./
>
> /Cgalcombines floating point arithmetic with exact arithmetic, in order
> to be efficient and reliable.Cgalhas a built-in number type for that,
> butGmpandMpfrprovide a faster solution, and we recommend to use them./
>
> /HavingGmpversion 4.2 or higher andMpfrversion 2.2.1 or higher installed
> is recommended. These libraries can be obtained
> fromhttp://gmplib.org/andhttp://www.mpfr.org/, respectively./
>
> /As Visual C++is not properly supported by theGmpandMpfrprojects, we
> provide precompiled versions ofGmpandMpfr, which can be downloaded with
> the installerCGAL-3.9-Setup.exe./
>
>
> and using the apropriate flag in CMAKE I was able to get CGAL working
> without gmp in both 32 and 64 bits and finally link my project correctly.
>
>
> Finaly my question is .... does someone have found a way to use gmp in
> 64 bits windows projects ?
>
> Thanks in advance.
>
>
>
> NUMTECH <http://www.numtech.fr>   Vivien CLAUZON
> Ingénieur d'études et de recherche
> 6, allée Alan Turing - BP 30242 - Parc Technologique de la Pardieu
> 63175 AUBIERE Cedex - FRANCE
> Tél: 33 (0)4 73.28.75.95 - Fax: 33 (0)4.73.28.75.99
> Web: http://www.numtech.fr


--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri