id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
7185	Header only chrono requires library	DanSearles@…	viboes	"Documentation for including chrono.hpp:
http://www.boost.org/doc/libs/1_50_0/doc/html/chrono/users_guide.html

implies that chrono can be configured as a 'header only library',
by defining BOOST_CHRONO_HEADER_ONLY, but on VC9, I get a link error:
cannot open file 'libboost_system-vc90-mt-gd-1_50.lib

Adding a define for BOOST_ALL_NO_LIB results in two undefined objects:
class boost::system::error_category const & __cdecl boost::system::generic_category(void)
class boost::system::error_category const & __cdecl boost::system::system_category(void)
"	Bugs	closed	Boost 1.51.0	chrono	Boost 1.50.0	Problem	fixed