CGAL users discussion list

[Vivien Clauzon <>]

Many thanks !

	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

Le 16/11/2011 17:02, Sebastien Loriot (GeometryFactory) a écrit :

On the download page of CGAL you can get them:

32bits version:
https://gforge.inria.fr/frs/download.php/27232/gmp-5.0.1_and_mpfr-3.0.0_precompiled_i686.zip
64bits version:
https://gforge.inria.fr/frs/download.php/27233/gmp-5.0.1_and_mpfr-3.0.0_precompiled_x64.zip

Sebastien.

Vivien Clauzon wrote:

  Answer to myself :

this link seems to provide a usable prebuild for mpir compatible with gmp : http://www.holoborodko.com/pavel/mpfr/

Best regards

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


Le 16/11/2011 16:39, Vivien Clauzon a écrit :

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 :/

Gmp and Mpfr are libraries for multi precision integers and rational numbers, and for multi precision floating point numbers./

/Cgal combines floating point arithmetic with exact arithmetic, in order to be efficient and reliable. Cgal has a built-in number type for that, but Gmp and Mpfr provide a faster solution, and we recommend to use them./

/Having Gmp version 4.2 or higher and Mpfr version 2.2.1 or higher installed is recommended. These libraries can be obtained from http://gmplib.org/ and http://www.mpfr.org/, respectively./

/As Visual C++ is not properly supported by the Gmp and Mpfr projects, we provide precompiled versions of Gmp and Mpfr, which can be downloaded with the installer CGAL-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