Autodetect the correct target name for Eigen coming from conan
Autodetect the correct target name for Eigen coming from conan


Former-commit-id: 8ec057319ea68009cc500f508371c658f46be94d
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG