As discussed in https://github.com/robotology/ycm/issues/120#issuecomment-934196069, no deprecation cycle is necessary as find_package(Eigen3) will continue to work fine thans to the Eigen3Config.cmake that is shipped with the eigen package in all known distributions.
Fix https://github.com/robotology/ycm/issues/120 .
As discussed in https://github.com/robotology/ycm/issues/120#issuecomment-934196069, no deprecation cycle is necessary as
find_package(Eigen3)
will continue to work fine thans to theEigen3Config.cmake
that is shipped with the eigen package in all known distributions.