Use modern-style Eigen3 CMake variables Change-Id: I4c14aa54552b3f718dff90eb397cb030aeb6ecd4
Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It is a feature rich, mature and performant library which has been used in production at Google since 2010. Ceres Solver can solve two kinds of problems.
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