fatal error: Eigen/Dense: No such file or directory

Question

I have installed libeigen3-dev in order to compile programs using Eigen 3. when I include a file, such as Eigen/Dense I get this error when I try t

Answer 1

I had this same problem on my Ubuntu 14 box. Ended up creating symlinks to get around it. With eigen3 installed in /usr/local/include do the following:

cd /usr/local/include
sudo ln -sf eigen3/Eigen Eigen
sudo ln -sf eigen3/unsupported unsupported

You should now be able to include the headers by:

#include 
#include