[Boost-build] Difficulty configuring boost.build for MSVC 9.0

Subject: [Boost-build] Difficulty configuring boost.build for MSVC 9.0
From: Ian Emmons (iemmons_at_[hidden])
Date: 2008-12-19 16:12:23

I have a jam file that works on Macintosh, and I'm now porting it to  
Windows.  In my user-config.jam file, the following entries work just  
fine for Visual Studio 2005 (msvc-8.0) and 2003 (msvc-7.1):

using msvc
    :  8.0
    :  # no c++ compile command
    :  # no features
    ;

using msvc
    :  7.1
    :  # no c++ compile command
    :  # no features
    ;

However, when I try the analogous configuration for Visual Studio 2008  
(msvc-9.0), bad things happen:

using msvc
    :  9.0
    :  # no c++ compile command
    :  # no features
    ;

Specifically, bjam issues the command "cl" without previously invoking  
the setup script, and so "cl" isn't on the path, and therefore fails.   
I get the same result when I explicitly specify the setup script:

using msvc
    :  9.0
    :  # no c++ compile command
    :  <setup>"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC 
\vcvarsall.bat"
    ;

Any idea what I'm doing wrong here?

Thanks,

Ian