Problems installing KDL (eigen2)

Submitted by focke_85 on Tue, 2011-07-12 13:59

Hi all

I'm trying to install the KDL using ccmake (as shown in the KDL-Installation-page), but I am getting the followng error:

   Orocos KDL version  (1.1.99)

    Build type set to 'Release' by user.

    CMake Error at config/FindEigen2.cmake:6 (MESSAGE):
      -- Looking for Eigen2 - not found
    Call Stack (most recent call first):
      CMakeLists.txt:47 (INCLUDE)
I installed the eigen2 version 2.0.16 doing following this steps after extracting it:

cd home/user/OROCOS_KDL/eigen2/eigen-eigen-9ca09dbd70ce/
mkdir build_dir ; cd build_dir
cmake /home/user/OROCOS_KDL/eigen2/eigen-eigen-9ca09dbd70ce
sudo make install

I saw in other forum entries that some people had the same problem, and they solved it just inserting

export CMAKE_INCLUDE_PATH=/usr/local/include/eigen2

But it didn't work with me (I don't even have a folder /usr/local/include/eigen2). I guess I am doing something wrong in the eigen2 installation. I hope some of you can help me with this. If you can, I will appreciate if you use a bit detailed explanation, since I'm new with Linux and it's commands.

Thanks in advance,

Santiago

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FW:Problems installing KDL (eigen2)

Submitted by focke_85 on Tue, 2011-07-12 15:01.

Hi... I managed to skip the error changing the first line of code of the file 'config/FindEigen2.cmake', adding some paths:

FIND_PATH(EIGEN2_INCLUDE_DIR Eigen/Core /usr/include /usr/include/eigen2 /usr/local/include /usr/local/include/eigen2)

I don't know if that a suitable solution. If not please inform me.

Regards,

Santiago

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FW:Problems installing KDL (eigen2)

Submitted by dustingooding on Tue, 2011-07-12 15:12.

On Jul 12, 2011, at 10:01 AM, <focke [dot] 85 [..] ...> <focke [dot] 85 [..] ...> wrote:

> Hi... I managed to skip the error changing the first line of code of the file 'config/FindEigen2.cmake', adding some paths:
>
> FIND_PATH(EIGEN2_INCLUDE_DIR Eigen/Core /usr/include /usr/include/eigen2 /usr/local/include /usr/local/include/eigen2)
>
> I don't know if that a suitable solution. If not please inform me.
>
> Regards,
>
> Santiago

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FW:Problems installing KDL (eigen2)

Submitted by focke_85 on Tue, 2011-07-12 15:40.

Hi

Well I don't if it worked, because now I include in my project the KDL headers

#include <kdl/chain.hpp>
#include <kdl/chainfksolver.hpp>
#include <kdl/chainfksolverpos_recursive.hpp>
#include <kdl/frames_io.hpp>

and I get compiling errors regarding Eigen/Core:

/usr/local/include/kdl/jacobian.hpp:26:22: error: Eigen/Core: No such file or directory

I just added the includes in my header file. I don't know if its a installation problem, or that maybe I should do something in my project files (like for example the cmakelist) to use the KDL headers.

BR,

Santiago

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