id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12303	Linker error with boost.locale and operator%	andreas.kuechler@…	Artyom Beilis	"Hi,

I recently updated to boost 1.61 with self-compiled libraries using MSVC2015 with the following build settings
{{{
.\bootstrap
.\b2 architecture=x86 toolset=msvc -j 12 --layout=tagged
}}}
The libraries are properly compiled but when I link with my application I get the following errors:

(BOOST_AUTO_LINK_TAGGED is defined globally)

{{{
libboost_locale-mt-gd.lib(date_time.obj) : error LNK2019: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::system_category(void)"" (?system_category@system@boost@@YAAEBVerror_category@12@XZ) referenced in function ""public: __cdecl boost::thread_exception::thread_exception(int,char const *)"" (??0thread_exception@boost@@QEAA@HPEBD@Z)
libboost_locale-mt-gd.lib(generator.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::system_category(void)"" (?system_category@system@boost@@YAAEBVerror_category@12@XZ)
libboost_locale-mt-gd.lib(localization_backend.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::system_category(void)"" (?system_category@system@boost@@YAAEBVerror_category@12@XZ)
libboost_locale-mt-gd.lib(lcid.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::system_category(void)"" (?system_category@system@boost@@YAAEBVerror_category@12@XZ)
libboost_locale-mt-gd.lib(date_time.obj) : error LNK2019: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::generic_category(void)"" (?generic_category@system@boost@@YAAEBVerror_category@12@XZ) referenced in function ""void __cdecl boost::system::`dynamic initializer for 'errno_ecat''(void)"" (??__Eerrno_ecat@system@boost@@YAXXZ)
libboost_locale-mt-gd.lib(generator.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::generic_category(void)"" (?generic_category@system@boost@@YAAEBVerror_category@12@XZ)
libboost_locale-mt-gd.lib(localization_backend.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::generic_category(void)"" (?generic_category@system@boost@@YAAEBVerror_category@12@XZ)
libboost_locale-mt-gd.lib(lcid.obj) : error LNK2001: unresolved external symbol ""class boost::system::error_category const & __cdecl boost::system::generic_category(void)"" (?generic_category@system@boost@@YAAEBVerror_category@12@XZ)
debug\uniform_initialization.exe : fatal error LNK1120: 2 unresolved externals
}}}

I got a minimal working example 

{{{
#include <boost/locale.hpp>

int main(int argc, char *argv[])
{
  (boost::locale::format(boost::locale::translate(""Hello, {1}"")) % ""World"").str();
  return 0;
}
}}}

The linker error occurs only if the operator% is used, format and translate alone compile and link fine.
The linker error disappear as soon as I add {{{#include <boost/system/error_code.hpp>}}}"	Bugs	closed	To Be Determined	locale	Boost 1.61.0	Problem	wontfix