I've got an application where I need to generate a lot of repetitive sections of 8051 assembler code. For this I need a pre-processor or macro processor that has facilities for iteration and/or recursion. I'm currently using a stand-alone C preprocessor (MCPP) to do conditional assembly etc., and someone suggested that the Boost pre-processor library might give me the facilities I need for these repetitive code sections. What do I have to download to get just the preprocessor libraries? Also, can I use these libraries with any C or C++ preprocessor (such as MCPP), or do I need something specific? I guess this boils down to - does the Boost librbary use any compiler/preprocessor featires that I wouldn't find in a standard C preprocessor? Thanks for your help. These questions arise because I'm not using C or C++, so the rest of Boost is presumably of no use to me - I just need the preprocessor bit. I'm using Windows Vista, so any tools need to be Windows compatible... Thanks - Rowan