[Boost-build] bjam output ?????, why?language setting?

Subject: [Boost-build] bjam output ?????, why?language setting?
From: l.jay Yuan (pass86_at_[hidden])
Date: 2010-04-15 06:44:55

bjam output ?????, why?language setting?
I build bjam use msvc9.0.
I am working on win server 2003,x86, 32bit.
My language is chinese.
I use bjam -a.

outputs:

warning: No toolsets are configured.
warning: Configuring default toolset "msvc".
warning: If the default is wrong, your build may not work correctly.
warning: Use the "--toolset=xxxxx" option to override our guess.
warning: For more configuration options, please consult
warning: http://boost.org/boost-build2/doc/html/bbv2/advanced/configuration.html
...found 11 targets...
...updating 3 targets...
compile-c-c++ bin\msvc-9.0\debug\main.obj
main.c
msvc.link bin\msvc-9.0\debug\main.exe
common.copy main.exe
??????         1 ????????
...updated 3 targets...

I have used bjam more than 1 year, the problem is fisrt time.