msvc configuration question

From: Vladimir Prus (ghost_at_[hidden])
Date: 2003-05-08 05:53:18

I've a question for msvc users. Now, V2 works ok if you specify

using msvc : 6.5 ;

in user-config.jam. But if you write

using msvc ;

then it will works only if vcvasrs32.bat was called previously. Two people 
already stumbled on it, and I think something should be done. The options are

1. Document the the second case ("using msvc ; ") works only if vcvars32.bat 
were called.

2. If vcvars32.bat is in path, use that to find the path to compiler. Invoke 
vcvars32.bat before all tool invocations. If vcvars32.bat is not in path, 
look though default install location for versions 7.1, 7.0 and 6. If compiler 
is found in any of locations, it will be used.

3. Try to sense if vcvars32.bat was already called. If so, use variables it 
sets to find the path to compiler. If vcvars32.bat is not already called, use 
logic from (2).

Can anybody comment on those variants or offer more alternatives?

Thanks,
Volodya