/usr/include/boost/wave/util/ is in libboost1.65-dev 1.65.1+dfsg-0ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/wave/util/cpp_ifblock.hpp
/usr/include/boost/wave/util/cpp_include_paths.hpp
/usr/include/boost/wave/util/cpp_iterator.hpp
/usr/include/boost/wave/util/cpp_macromap.hpp
/usr/include/boost/wave/util/cpp_macromap_predef.hpp
/usr/include/boost/wave/util/cpp_macromap_utils.hpp
/usr/include/boost/wave/util/file_position.hpp
/usr/include/boost/wave/util/filesystem_compatibility.hpp
/usr/include/boost/wave/util/flex_string.hpp
/usr/include/boost/wave/util/functor_input.hpp
/usr/include/boost/wave/util/insert_whitespace_detection.hpp
/usr/include/boost/wave/util/interpret_pragma.hpp
/usr/include/boost/wave/util/iteration_context.hpp
/usr/include/boost/wave/util/macro_definition.hpp
/usr/include/boost/wave/util/macro_helpers.hpp
/usr/include/boost/wave/util/pattern_parser.hpp
/usr/include/boost/wave/util/symbol_table.hpp
/usr/include/boost/wave/util/time_conversion_helper.hpp
/usr/include/boost/wave/util/transform_iterator.hpp
/usr/include/boost/wave/util/unput_queue_iterator.hpp