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Re: Multiple definition problem


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  • From: Sylvain Pion <>
  • To: CGAL Mailinglist <>
  • Subject: Re: Multiple definition problem
  • Date: Wed, 10 Jan 2007 15:02:23 +0100
  • Organization: INRIA Sophia Antipolis, France

Hi Ambroise,

Ambroise Krebs wrote:
Hi,
Well, I write here as I have a problem.
I was using CGAL-3.1 with Linux Ubuntu Hoary and everything was fine.
I upgraded to Linux Ubuntu Dapper and the compiler was not recognized for CGAL-3.1, so I changed it for CGAL-3.2.1.
I could install it without any problem, but when I compile a project that uses it (and that worked perfectly with CGAL-3.1), I get the following error:

.//libgeom.a(GenericObject.o): In function `CGAL::operator<<(CGAL::VRML_2_ostream&, char const*)':GenericObject.cc:(.text+0x0): multiple definition of `CGAL::operator<<(CGAL::VRML_2_ostream&, char const*)'
geometry_test.o:geometry_test.cc:(.text+0x0): first defined here
.//libgeom.a(GenericObject.o): In function `CGAL::operator<<(CGAL::VRML_2_ostream&, double const&)':GenericObject.cc:(.text+0x28): multiple definition of `CGAL::operator<<(CGAL::VRML_2_ostream&, double const&)'
geometry_test.o:geometry_test.cc:(.text+0x28): first defined here

I really don't know what is wrong, did anybody else met this kind of problem before?
Any help would be appriciated.

What is libgeom.a and what is GenericObject.o ?
These do not come from CGAL, I think.


Also, note that sometimes install_cgal says a compiler is not supported,
while it actually works.

Best,
--
Sylvain Pion
INRIA Sophia-Antipolis
Geometrica Project
CGAL, http://cgal.org/



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