[Boost-users] [Preprocessor] Relative Addresses in BOOST_PP_FILENAME_1

Dear all, I am trying to use BOOST_PP_FILENAME_1 for a header file in my current directory. Unless I hardcode the full address, GCC 4.5.1 (MinGW32, WinXP, SP3) says it can't find the same file in which I am using BOOST_PP_FILENAME_1! Is there any way I can go for relative file names? I have already checked the following -- neither works for the same reasons: #define BOOST_PP_FILENAME_1 "./Header.hpp" //1 #define BOOST_PP_FILENAME_1 ".\Header.hpp" //2 #define BOOST_PP_FILENAME_1 "Header.hpp" //3 TIA, --Hossein