Re: [eigen] Compile errors with gcc4.9

[Charly Mourglia <zouch.k@xxxxxxxxx>]

Yeah I disabled it but just wanted to be sure you knew this little issue.

Thanks for the answer.

Charly

Le 10/04/2013 00:33, Gael Guennebaud a écrit :
> I hope you meant gcc 4.8 as the future 4.9 just started to be hacked.
>
> Anyway, I believe there are a few more warnings like this. This one is
> just a matter of code cleaning, and you can turn it back to simple
> warnings while keeping other warnings as errors with:
>
> -Wno-error=unused-local-typedefs
>
> A fix for the 3.2 branch should come soon.
>
> cheers,
> Gael
>
> On Tue, Apr 9, 2013 at 1:12 PM, Charly Mourglia <zouch.k@xxxxxxxxx> wrote:
> > Hi everyone,
> >
> > When I try to compile some code using Eigen I get two errors, using g++-4.9
> > and
> >      -Wall -Werror -std-c++11 -fno-rtti
> > flags.
> >
> > Here are the errors :
> >
> > In file included from
> > /home/zouch/Prog/BiomechanicalAnimationFramework/BMEngine/external/eigen3/Eigen/Core:248:0,
> >
> > from file.h:26,
> >
> > from file.cpp:23:
> >
> > eigen3/Eigen/src/Core/util/Memory.h: In function 'Index
> > Eigen::internal::first_aligned(const Scalar*, Index)':
> >
> > eigen3/Eigen/src/Core/util/Memory.h:449:48: error: typedef 'Packet' locally
> > defined but not used [-Werror=unused-local-typedefs]
> >
> > typedef typename packet_traits<Scalar>::type Packet;
> >
> > ^
> >
> > In file included from eigen3/Eigen/Core:324:0,
> >
> > from file.h:26,
> >
> > from file.cpp:23:
> >
> > eigen3/Eigen/src/Core/products/SelfadjointMatrixVector.h: In static member
> > function 'static void
> > Eigen::internal::selfadjoint_matrix_vector_product<Scalar, Index,
> > StorageOrder, UpLo, ConjugateLhs, ConjugateRhs, Version>::run(Index, const
> > Scalar*, Index, const Scalar*, Index, Scalar*, Scalar)':
> >
> > eigen3/Eigen/src/Core/products/SelfadjointMatrixVector.h:38:44: error:
> > typedef 'RealScalar' locally defined but not used
> > [-Werror=unused-local-typedefs]
> >
> > typedef typename NumTraits<Scalar>::Real RealScalar;
> >
> > ^
> >
> > cc1plus: all warnings being treated as errors
> >
> > make[2]: *** [file.cpp.o] Error 1
> >
> > make[1]: *** [all] Error 2
> >
> > make: *** [all] Error 2
> >
> >
> > At file.cpp:23 there is just an #include "file.h", and file.h:26 is just
> > #include <Eigen/Core>.
> >
> > It is not really a problem since I can compile temporarily without Wall and
> > Werror flags but I thought it could be great for you to know this.
> >
> > I didn't get the problems with g++-4.7.
> >
> > Thanks for all your great work,
> > Regards,
> >
> > Charly