No rule to make target /usr/include/eigen3/Eigen/src/Core/../Plugins/CommonCwiseUnaryOps.h', needed by block_grasp_generator-hydro-devel/CMakeFiles/block_grasp_generator_visualization_tools.dir/src/visualization_tools.cpp.o'. Stop.
the file "CommonCwiseUnaryOps.h" exists in "/usr/include/eigen3/Eigen/src/plugins"
eigen_conversionsConfig-version.cmake is in /opt/ros/hydro/share/eigen_conversions/cmake
eigen_conversionsConfig.cmake is in /opt/ros/hydro/share/eigen_conversions/cmake
What should I do?
another question is what does the path "/usr/include/eigen3/Eigen/src/Core/../Plugins/"
mean and what do the 2 dots imply?