/usr/include/ is in libroboptim-core-dev 2.0-6.
This file is owned by root:root, with mode 0o755.
..
/usr/include/roboptim/
/usr/include/roboptim/core/
/usr/include/roboptim/core/portability.hh
/usr/include/roboptim/core/numeric-linear-function.hxx
/usr/include/roboptim/core/terminal-color.hh
/usr/include/roboptim/core/differentiable-function.hh
/usr/include/roboptim/core/derivative-size.hh
/usr/include/roboptim/core/debug.hh
/usr/include/roboptim/core/solver-factory.hxx
/usr/include/roboptim/core/identity-function.hh
/usr/include/roboptim/core/fwd.hh
/usr/include/roboptim/core/problem.hh
/usr/include/roboptim/core/solver.hxx
/usr/include/roboptim/core/n-times-derivable-function.hxx
/usr/include/roboptim/core/plugin/
/usr/include/roboptim/core/plugin/dummy-laststate.hh
/usr/include/roboptim/core/plugin/dummy.hh
/usr/include/roboptim/core/util.hh
/usr/include/roboptim/core/linear-function.hh
/usr/include/roboptim/core/io.hh
/usr/include/roboptim/core/differentiable-function.hxx
/usr/include/roboptim/core/generic-solver.hh
/usr/include/roboptim/core/sum-of-c1-squares.hh
/usr/include/roboptim/core/solver.hh
/usr/include/roboptim/core/config.hh
/usr/include/roboptim/core/indent.hh
/usr/include/roboptim/core/twice-differentiable-function.hh
/usr/include/roboptim/core/derivable-parametrized-function.hh
/usr/include/roboptim/core/numeric-quadratic-function.hh
/usr/include/roboptim/core/quadratic-function.hxx
/usr/include/roboptim/core/numeric-linear-function.hh
/usr/include/roboptim/core/deprecated.hh
/usr/include/roboptim/core/function.hh
/usr/include/roboptim/core/constant-function.hh
/usr/include/roboptim/core/finite-difference-gradient.hxx
/usr/include/roboptim/core/derivable-function.hh
/usr/include/roboptim/core/twice-differentiable-function.hxx
/usr/include/roboptim/core/util.hxx
/usr/include/roboptim/core/result.hh
/usr/include/roboptim/core/warning.hh
/usr/include/roboptim/core/quadratic-function.hh
/usr/include/roboptim/core/n-times-derivable-function.hh
/usr/include/roboptim/core/solver-error.hh
/usr/include/roboptim/core/parametrized-function.hh
/usr/include/roboptim/core/result-with-warnings.hh
/usr/include/roboptim/core/visualization/
/usr/include/roboptim/core/visualization/fwd.hh
/usr/include/roboptim/core/visualization/gnuplot-differentiable-function.hh
/usr/include/roboptim/core/visualization/gnuplot-commands.hh
/usr/include/roboptim/core/visualization/gnuplot.hh
/usr/include/roboptim/core/visualization/gnuplot-function.hh
/usr/include/roboptim/core/problem.hxx
/usr/include/roboptim/core/linear-function.hxx
/usr/include/roboptim/core/sys.hh
/usr/include/roboptim/core/finite-difference-gradient.hh
/usr/include/roboptim/core/solver-factory.hh
/usr/include/roboptim/core/filter/
/usr/include/roboptim/core/filter/split.hxx
/usr/include/roboptim/core/filter/cached-function.hxx
/usr/include/roboptim/core/filter/split.hh
/usr/include/roboptim/core/filter/cached-function.hh
/usr/include/roboptim/core/solver-warning.hh
/usr/include/roboptim/core/twice-derivable-function.hh
/usr/include/roboptim/core/parametrized-function.hxx
/usr/include/roboptim/core/config.h
/usr/include/roboptim/core.hh