/usr/include/viennacl/generator/ is in libviennacl-dev 1.5.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/viennacl/generator/autotune.hpp
/usr/include/viennacl/generator/forwards.h
/usr/include/viennacl/generator/generate.hpp
/usr/include/viennacl/generator/helpers.hpp
/usr/include/viennacl/generator/map_functor.hpp
/usr/include/viennacl/generator/mapped_objects.hpp
/usr/include/viennacl/generator/matrix_product.hpp
/usr/include/viennacl/generator/profile_base.hpp
/usr/include/viennacl/generator/profiles.hpp
/usr/include/viennacl/generator/saxpy.hpp
/usr/include/viennacl/generator/scalar_reduction.hpp
/usr/include/viennacl/generator/set_arguments_functor.hpp
/usr/include/viennacl/generator/statement_representation_functor.hpp
/usr/include/viennacl/generator/utils.hpp
/usr/include/viennacl/generator/vector_reduction.hpp