The boost documentation on the web site talks about building boost from source, but I don't see information on how to leverage optional third party libraries easily accessible in the documentation from the place the user will most likely end up: "Building From Source". This information seems to be tucked away in documentation of various components, making it difficult to actually build a complete boost. I think it would be a good idea to bring this information up to the top level build instructions, at the very least itemize these third party packages and then link to the relevant project-specific documentation pages that talk about configuring to use them. Here are the third party optional libraries I know about so far and the libraries that use them: bzip2 (iostreams) iconv (locale - if icu not available) icu (locale, regex) lzma (iostreams) openssl (asio, beast) pthread-win32 (sync, thread) zlib (beast, gil, iostreams) Any others? Would folks find it useful if this information was part of the standard "Building From Source" sections of the upper layers of documentation? Thanks, Jim