> Unfortunately, NATIVE_SYSTEM_HEADER_DIR is a Makefile variable (see > gcc/config/t-gnu). It is being used only in three places: > gcc/config/t-gnu, gcc/config/t-gnu and gcc/config/i386/t-mingw32. What > do you suggest? Make that definition a shell variable and move it to > gcc/config.gcc? I see your point, but what about not making "/usr a four letter word" in GNU? :-) Paolo