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Undedstood. Thanks  a lot.

installing CGAL under XCode is quite esoteric… 

Now "boost" is installed as well as CGal, i get lots of 

/Turbo64/SOURCES/CGAL/stddef.h:10:2: You have added .../path/to/CGAL-x.y/include/CGAL to the INCLUDE path. You should use .../path/to/CGAL-x.y/include instead.

and compilation aborts.

Neither google nor the CGal Install manual describes this message and workaround.

I have added nothing to search path in Xcode, and the CGAL files and boost looks to be in the right places.

the message in itself is not quite explicit.

and the stddef which produced the message conflict with the system  stddef

Can you give me some directions to fix this ?

Many thanks

JPH

Le 4 oct. 2021 à 09:28, Sebastien Loriot ( via cgal-discuss Mailing List) <> a écrit :

Hello,

This header is from the boost library.

See https://doc.cgal.org/latest/Manual/thirdparty.html#thirdpartyBoost

Best,

Sebastien


On 10/3/21 7:58 PM, JP HARMAND ( via cgal-discuss Mailing List) wrote:

Bonjour,
Je viens de télécharger CGAL 5.3 pour une installation sous XCode sur mac.
Les premiers include dans un ficher de test :
#include "CGALtest.hpp"
#include "CGAL/Exact_integer.h"
#include "CGAL/Filtered_extended_homogeneous.h"
#include "CGAL/Nef_polyhedron_2.h"
Donnent l’erreur suivante:
In file included from CGALTest/CGALtest.cpp:10:
In file included from CGALTest/CGAL/CGAL-5.3/include/CGAL/Exact_integer.h:17:
CGALTest/CGAL/CGAL-5.3/include/CGAL/config.h:127:10: fatal error: 'boost/config.hpp’
file not found
*#include <boost/config.hpp>*
En effet, le dossier boost téléchargé ne contient pas le fichier requis par  l’include du  fichier  config.h, ni en direct, ni en recursif.
#include <boost/config.hpp>
Et une recherche de  fichier  dans le package CGAL5.3 ne trouve pas ce fichier ( *config.hpp)*
*
*
****Je vous serais reconnaissant de m’indiquer  la source du problème.
CDT
JPH
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Amitiés

JP