Hi, I've recently downloaded the new Boost 1.34.1 Windows Installer and tried to use it but I've met some linking troubles in conjunction with Boost.Iostream & Zlib compression scheme. To explain that, I've just tried to compile w/ VC++7.1 this code snippet: #include <boost/iostreams/filtering_streambuf.hpp> #include <boost/iostreams/copy.hpp> #include <boost/iostreams/filter/gzip.hpp> #include <iostream> #include <sstream> namespace io = boost::iostreams ; // Zlib compression void compress(std::istream& is, std::ostream& os) { io::filtering_streambuf<io::output> out ; out.push(io::gzip_compressor()) ; out.push(os) ; io::copy(is, out) ; } void main() { } The VC++ linker complains that "boost_zlib-vc71-mt-gd-1_34_1.lib" library can't be opened from the Boost installation library path. I've checked it and didn't find any "boost_zlib*" library in the distribution. I've read the "Getting started documentation" and I've found "no specific configuration" for Boost.Iostream with Zlib. I've surely missed something but... I've also went through the boost user-list archive unsuccessfully. Any help or suggestion will be welcomed Marc Viala