/usr/include/boost/spirit/home/lex/ is in libboost1.46-dev 1.46.1-7ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/spirit/home/lex/argument.hpp
/usr/include/boost/spirit/home/lex/detail/
/usr/include/boost/spirit/home/lex/detail/sequence_function.hpp
/usr/include/boost/spirit/home/lex/domain.hpp
/usr/include/boost/spirit/home/lex/lexer/
/usr/include/boost/spirit/home/lex/lexer.hpp
/usr/include/boost/spirit/home/lex/lexer/action.hpp
/usr/include/boost/spirit/home/lex/lexer/char_token_def.hpp
/usr/include/boost/spirit/home/lex/lexer/lexer.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/
/usr/include/boost/spirit/home/lex/lexer/lexertl/functor.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/functor_data.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/generate_static.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/iterator.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/iterator_tokenizer.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/lexer.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/semantic_action_data.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/static_functor_data.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/static_lexer.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/static_version.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/token.hpp
/usr/include/boost/spirit/home/lex/lexer/lexertl/wrap_action.hpp
/usr/include/boost/spirit/home/lex/lexer/pass_flags.hpp
/usr/include/boost/spirit/home/lex/lexer/sequence.hpp
/usr/include/boost/spirit/home/lex/lexer/string_token_def.hpp
/usr/include/boost/spirit/home/lex/lexer/support_functions.hpp
/usr/include/boost/spirit/home/lex/lexer/terminals.hpp
/usr/include/boost/spirit/home/lex/lexer/token_def.hpp
/usr/include/boost/spirit/home/lex/lexer_lexertl.hpp
/usr/include/boost/spirit/home/lex/lexer_static_lexertl.hpp
/usr/include/boost/spirit/home/lex/lexer_type.hpp
/usr/include/boost/spirit/home/lex/meta_compiler.hpp
/usr/include/boost/spirit/home/lex/primitives.hpp
/usr/include/boost/spirit/home/lex/qi/
/usr/include/boost/spirit/home/lex/qi.hpp
/usr/include/boost/spirit/home/lex/qi/in_state.hpp
/usr/include/boost/spirit/home/lex/qi/plain_token.hpp
/usr/include/boost/spirit/home/lex/qi/plain_tokenid.hpp
/usr/include/boost/spirit/home/lex/qi/state_switcher.hpp
/usr/include/boost/spirit/home/lex/reference.hpp
/usr/include/boost/spirit/home/lex/tokenize_and_parse.hpp
/usr/include/boost/spirit/home/lex/tokenize_and_parse_attr.hpp