Hello,
What is the quickest way to know what version of Eigen is installed on a given machine (Linux/Debian based) ?

I checked in /usr/local/include/Eigen and in /usr/include/Eigen3, found nothing relevant (readme file or so).

Thanks,

You can check at compile time using:

EIGEN_WORLD_VERSION
EIGEN_MAJOR_VERSION
EIGEN_MINOR_VERSION

that are defined in ......./Eigen/src/Core/utils/Macro.h

ggael wrote:You can check at compile time using:
EIGEN_WORLD_VERSION
EIGEN_MAJOR_VERSION
EIGEN_MINOR_VERSION
that are defined in ......./Eigen/src/Core/utils/Macro.h

Thank you, Gaël. The point was, I had mixed-up installations on my machine (probably one manually, and on using cmake), and I wanted to make sure which one was the good one (were both the same, actually...)

Idea: may add this in the FAQ ?

(Et un grand bravo au passage pour Eigen. J'utilise depuis peu, mais suis enthousiasmé...)