Hello all, I have a general question about what's the best way to include files that results in faster compilation time. In my example, I have *a lot* of files that use different parts of Boost.Preprocessor. Each header includes the specific Boost.Preprocessor headers that it needs. As a results the same Boost.Preprocessor header and #included many times (50+?) even if the including has no effect after the first inclusion. Furthermore, at the end essentially all Boost.Preprocessor header get included. This way is more module in that each single file includes all the headers that it needs. But, does that slow down compilation? Would it be faster to just #include <boost/preprocessor.hpp> just once into a front-end header that then includes all my single header files? (Maybe with modern compilers and file-systems this makes no difference?) Thanks a lot. --Lorenzo -- View this message in context: http://boost.2283326.n4.nabble.com/boost-preprocessor-include-speed-question... Sent from the Boost - Dev mailing list archive at Nabble.com.