Hi, I have made some modifications to Boost.Chrono before the review (Version 0.7.0). The library can be downloaded from http://www.boostpro.com/vault/index.php?action=downloadfile&filename=chrono.zip&directory=System& and the documentation is online on the sandbox http://svn.boost.org/svn/boost/sandbox/chrono/libs/chrono/doc/html/index.htm... or in PDF format http://svn.boost.org/svn/boost/sandbox/chrono/libs/chrono/doc/chrono.pdf Boost.Chrono depends on Boost.Ratio http://www.boostpro.com/vault/index.php?action=downloadfile&filename=ratio.zip&directory=Math%20-%20Numerics&PHPSESSID=2d7859f3e812c993f5a9e2d9900dfee8 and optionaly Boost.System Header Only http://www.boostpro.com/vault/index.php?action=downloadfile&filename=system.zip&directory=System&PHPSESSID=2d7859f3e812c993f5a9e2d9900dfee8. Next follows the major changes: [*Features:] * Boost_Chrono is now a configurable header only lib that allows the user to choose in addition if the windows file is included or not. * Added clock_string<> traits. * Define chrono_io for all the clocks * Add input of process_times representation [*Implementation:] * Moved some details to static_integer directory. * Use of detail/win files to avoid the use of windows.h file. * Completed the error_code handling. * Works now with BOOST_SYSTEM_NO_DEPRECATED. [*Fixes:] * Fix some warnings. * Fix original error on Mac * Don't fix the link with boost_system to static. [*Test:] * Added test on process and thread clocks. * Moved to lightweight_test.hpp. * Able to test multiple configurations. [*Doc:] * Removed some not useful parts as the history, the test and the tickets. Best, _____________________ Vicente Juan Botet Escribá http://viboes.blogspot.com/