[boost] [Preprocessor] Can we generate token for #include programmatically ?

Here is what I had in mind #define BASE foo.hpp #include BOOST_PP_STRINGIZE(BOOST_PP_CAT(nt2/support/numeric/functions/scalar/,BASE)) It fails because it seems we can't paste stuff ending with / ... Using fiel iteration, how can I circumvent hsi problem and generate a list of #include whose filename are computed from a sequence of name in a BOOST_PP_SEQ and a given, changing, prefix path ?