Eigen/core

fatal error: Eigen/Core

install eigen3

sudo apt-get install libeigen3-dev

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

This is because the eigen library is installed in the /usr/include/eigen3/Eigen path by default. You need to use the following command to map it to the /usr/include path:

sudo ln -s /usr/include/eigen3/Eigen /usr/include/Eigen

Note: Make sure to run the following command after mapping the paths:

sudo updatedb

You can verify the installation by running the following command:

locate eigen3

If you encounter any issues during the installation, you can try reinstalling the libeigen3-dev package:

sudo apt-get install libeigen3-dev

After reinstalling, map the paths again:

sudo ln -s /usr/include/eigen3/Eigen /usr/include/Eigen

 


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