CGAL users discussion list

[Edoardo Milotti <>]

I have tried to recompile everything making sure of setting 

source /opt/intel/Compiler/11.1/088/bin/iccvars.sh intel64

and of using the Intel compiled library in the examples, but still I had no 
success with the Intel compiler 11.1/088: the examples abort with 
segmentation fault. I reinstalled everything, but still it did not work. I 
shall try to find out what is wrong and if I do, I shall report it. 

Greetings, 

Edoardo 



On 05/mag/2010, at 20.46, Laurent Rineau (GeometryFactory) wrote:

> On Wednesday 05 May 2010 20:27:57 Edoardo Milotti wrote:
>>> I can answer to that question: the Intel Compiler (versions 11.0 and
>>> 11.1) is tested by CGAL daily testsuite. You must make sure the
>>> following compilation
>>> 
>>> flags are used:
>>> -D_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC=1 -fp-model strict -diag-disable
>>> 980
>>> 
>>> (Probably only -fp-model strict is important, and the other flags are
>>> there to silent some warnings.)
>>> 
>>> *However*, the compilation flag -strict-ansi of the Intel Compiler is
>>> (not yet) supported. I have added that setup (with -strict-ansi), and
>>> things are going better and better. Probably Intel Compiler 11.1 with
>>> -strict-ansi will be supported (or almost supported) by CGAL-3.7.
>>> 
>>> Can you give use an example of the error log you get?
>> 
>> I do not use the -strict-ansi flag, while I always set -fp-model strict.
>> 
>> I have tried to build the libraries with
>> 
>> cmake -DCMAKE_C_COMPILER=/opt/intel/Compiler/11.1/088/bin/intel64/icc
>> -DCMAKE_CXX_COMPILER=/opt/intel/Compiler/11.1/088/bin/intel64/icpc
>> -DWITH_examples=true
> 
> The version I test is /opt/intel/Compiler/11.1/059/bin/intel64/icpc (ie 
> build 
> version 059 instead of 088), but I doubt it can make any difference.
> 
> Do you call the following command before the compilation? 
> 
>   source /opt/intel/Compiler/11.1/088/bin/iccvars.sh intel64
> 
>> and then make. The libraries build (with some warnings that tell me there
>> are duplicate libraries), but when I try to run the examples I always get
>> "segmentation error".
> 
> I cannot reproduce that behavior with CGAL-3.6. I have compiled the 
> libraries 
> with icpc (11.1/059) as well as, for example, examples/Triangulation_3/, 
> and 
> there examples ran fine.
> 
>> Now I am using the libraries built by gcc 4.5.
> 
> Oops, no!! The generated file include/CGAL/compiler_config.h is very 
> compiler-
> dependent.
> 
>> When I try to compile the program that calls CGAL with icpc I get a list of
>> error messages like this:
>> 
>> 
>> ********************
>> 
>> /CG_Software/CGAL-3.6/CGAL-3.6/include/CGAL/Triangulation_ds_cell_base_3.h(
>> 50): error: only "()" is allowed as initializer for array member
>> "CGAL::Triangulation_ds_cell_base_3<TDS>::V"
>> 
>>      : V((Vertex_handle[4]) {v0, v1, v2, v3} ) {}
>> 
>>          ^
>>          detected during:
> 
> Have a look at the line 50 of the file 
> CGAL-3.6/include/CGAL/Triangulation_ds_cell_base_3.h
> 
> You will see that that line depends on the macro 
> CGAL_CFG_ARRAY_MEMBER_INITIALIZATION_BUG, which is defined in 
> <CGAL/compiler-
> config.h>, and that file is created during the configuration of CGAL 
> libraries.
> 
> Here, you are trying to compile some CGAL program with the Intel Compiler, 
> using a feature that is available only with g++ (actually it is not a 
> "bug", 
> but a language extension specific to g++).
> 
> -- 
> Laurent Rineau, PhD
> R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
> Release Manager of the CGAL Project       http://www.cgal.org/
> 
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