Arduino Due libraries (official and 3rd party)

randomvibe:
Eigen is a C++ library enabling Matlab and Octave-like matrix programming. Eigen works very well with the Arduino Due. As a Matlab user that appreciates minimalism, the Eigen library is written as plain header files. So no makefiles, no binary files, nothing to compile upfront, no headaches.

I downloaded it and tried on arduino 1.8 still no luck , appreciate any help