scons visual studio express 2012构建不起作用

我只看文件- scons simple example 这对我不起作用。

第一个文件: main.cpp

#include <iostream>

int main()
{
    std::cout << "Hello World" << std::endl;
    return 0;
}

第二个文件:SCons SConstruct

Program('main.cpp')

结果:

 scons: Reading SConscript files ... 
 scons: done reading SConscript
 files. scons: Building targets ...
 cl /Fomain.obj /c main.cpp /TP /nologo
 "cl" is not an internal or external command, operable program or batch file.
 scons: *** [main.obj] Error 1 scons:
 building terminated because of errors.

我在带有Visual Studio Express 2012的Window 7上尝试过这个,scons 2.3 有什么帮助吗?