Fixed linking issue!
Fixed linking issue!

Turns out that Eigen including blas caused an undefined referense inside of ceres-solver on symbol GradientProblemSolver::Summary::Summary()


Former-commit-id: 967793c801115d2bfa0affcc09ba576502ea863b
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG