/usr/include/boost/compute/functional/ is in libboost1.62-dev 1.62.0+dfsg-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/compute/functional/as.hpp
/usr/include/boost/compute/functional/atomic.hpp
/usr/include/boost/compute/functional/bind.hpp
/usr/include/boost/compute/functional/common.hpp
/usr/include/boost/compute/functional/convert.hpp
/usr/include/boost/compute/functional/detail/
/usr/include/boost/compute/functional/detail/macros.hpp
/usr/include/boost/compute/functional/detail/nvidia_ballot.hpp
/usr/include/boost/compute/functional/detail/nvidia_popcount.hpp
/usr/include/boost/compute/functional/detail/unpack.hpp
/usr/include/boost/compute/functional/field.hpp
/usr/include/boost/compute/functional/geometry.hpp
/usr/include/boost/compute/functional/get.hpp
/usr/include/boost/compute/functional/hash.hpp
/usr/include/boost/compute/functional/identity.hpp
/usr/include/boost/compute/functional/integer.hpp
/usr/include/boost/compute/functional/logical.hpp
/usr/include/boost/compute/functional/math.hpp
/usr/include/boost/compute/functional/operator.hpp
/usr/include/boost/compute/functional/popcount.hpp
/usr/include/boost/compute/functional/relational.hpp