libeigen3-dev on hydro ?

asked 2014-05-22 10:40:00 -0500

hvn
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Hi,

I'm trying to build a package that uses libeigen3, but there is no stacks. "roscd eigen" shows that it isn't there. Searching reveals that stacks for hydro isn't there while at the same time it seems it can be installed manually. So how should I proceed ?

Thanks

answered 2014-05-22 10:57:37 -0500

ahendrix

47576 ●179 ●367 ●662 http://namniart.com/

Eigen is a system dependency, not a ROS package. Have you tried installing using apt?

sudo apt-get install libeigen3-dev

You should also be able to install the dependencies for packages using rosdep, assuming your packages are in the src folder (just change the src argument if your packages are elsewhere).

rosdep install --from-paths src --ignore-src

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Yes, I did. And it got me confused somehow. Indeed I installed it that way, but while on Electric it works, on Hydro eigen can't be resolved. The paths are fine. I got to this because of cv_bridge: on Electric my code compiles while on Hydro it doesn't. Testing this, I also got this eigen error.

hvn ( 2014-05-22 11:28:19 -0500 )edit

I think eigen moved from a ROS package to an external dependency between Electric and Hydro. It'll be easier to troubleshoot if you include the exact build errors you're seeing in your question.

ahendrix ( 2014-05-22 16:26:15 -0500 )edit

The error on eigen is: /usr/include/eigen3/unsupported/Eigen/Polynomials:4:22: fatal error: Eigen/Core: No such file or directory while it clearly is there: $ls /usr/include/eigen3/Eigen/Core /usr/include/eigen3/Eigen/Core

hvn ( 2014-05-22 22:17:41 -0500 )edit

It sounds like it's expecting /usr/include/eigen3 to be in your include path. Are you sure you're calling find_package for eigen in your CMakeLists correctly?

ahendrix ( 2014-05-23 09:10:22 -0500 )edit

I compared the CMakeLists of the Electric and Hydro versions and they're identical.

hvn ( 2014-05-23 23:18:18 -0500 )edit

Can you add your CMakeLists and the include lines from one file that is failing to your question?

ahendrix ( 2014-05-24 13:27:20 -0500 )edit

My include lines mess up after posting; are there coding tags I can/should use ?

hvn ( 2014-05-24 20:51:39 -0500 )edit

Yes; you can either select your code and use the code button in the editor GUI, or simply indent each line by four spaces.

ahendrix ( 2014-05-25 07:42:32 -0500 )edit

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