CGAL users discussion list

["Garth N. Wells" <>]

On Wed, Nov 21, 2012 at 8:06 AM, Laurent Rineau (CGAL/GeometryFactory)
<>
 wrote:
> Le mardi 20 novembre 2012 22:35:41 Garth N. Wells a écrit :
>> On Tue, Nov 20, 2012 at 9:41 PM, Laurent Rineau (CGAL/GeometryFactory)
>>
>> <>
>>  wrote:
>> > Le mardi 20 novembre 2012 21:13:01 Garth N. Wells a écrit :
>> >> I've been using CGAL 4.1 for a while with gcc 4.7 without problems.
>> >> I've just upgraded to CGAL 4.1 (from 4.0.2) on a machine that has
>> >>
>> >> Intel compilers installed. icpc -v gives:
>> >>      icpc version 12.1.4 (gcc version 4.4.6 compatibility))
>> >>
>> >> I now get a load of compiler errors from the file
>> >> CGAL/internal/Intersections_3/Bbox_3_Triangle_3_do_intersect.h:
>> >>
>> >>
>> >> CGAL/internal/Intersections_3/Bbox_3_Triangle_3_do_intersect.h(206):
>> >> error:
>> >> destructible entities are not allowed inside of a statement expression
>> >>
>> >>         return CGAL_OR(
>> >>         (do_axis_intersect_aux<K,AXE,SIDE>(p_min.y()-j->y(),
>> >>
>> >> p_min.z()-j->z(), sides) <= 0),
>> >>
>> >>
>> >> Any suggestions on how to work around this?
>> >
>> > Which compiler flags have you used?
>>
>> -fp-model strict  -openmp -O3 -xHost
>
> There are other flags, such as several -I.
>
> My guess is that you are using the Intel compiler with the the
> <CGAL/compiler_config.h> that was generated during the compilation of CGAL
> libraries with g++. Please rebuild your CGAL libraries with that the Intel
> Compiler. icpc version 12.1 should be supported. It is in the set of tested
> compilers in the CGAL daily tests suite.
>

Sorry for the delay. I've only just now has a chance to get back to this.

I've built CGAL 4.0.2 and 4.1 with the Intel compilers (versions
12.1.4 and 13.0.1).  Looks like a bug has been introduced to the CGAL
build system, which since 4.1 does not test for
CGAL_CFG_NO_STATEMENT_EXPRESSIONS. With 4.0.2, when running CMake I
see:

    -- Performing Test CGAL_CFG_NO_STATEMENT_EXPRESSIONS - Failed

and there is the file config/testfiles/CGAL_CFG_NO_STATEMENT_EXPRESSIONS.cpp.

With CGAL 4.1, there is no test for CGAL_CFG_NO_STATEMENT_EXPRESSIONS,
the above file has been removed and CGAL_CFG_NO_STATEMENT_EXPRESSIONS
does not appear anywhere in the CMakeCache.txt file.

Adding

    -DCGAL_CFG_NO_STATEMENT_EXPRESSIONS

to my library build flags is a work around, but isn't a solution
because CGAL should be figuring the flags out.

Garth


> --
> 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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