find_package(Eigen3 CONFIG) may not work in static builds where find_package is skipped globally. As fallback, manually create the Eigen3::Eigen IMPORTED target pointing to the eigen3 headers installed by deps/ (under CMAKE_PREFIX_PATH/include/eigen3). This ensures libigl and admesh always get a modern Eigen (5.x) with Eigen::all support.
Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.
For more information go to http://eigen.tuxfamily.org/.
THIS IS NOT THE COMPLETE EIGEN DISTRIBUTION. ONLY FILES NEEDED FOR COMPILING EIGEN INTO SLIC3R WERE PUT INTO THE SLIC3R SOURCE DISTRIBUTION. THIS DIRECTORY CONTAINS PIECES OF THE EIGEN 3.3.7 323c052e1731 SOURCE DISTRIBUTION.