title: 'cl' is not recognized as an internal or external command
body: <p>Below is the error message when I run "scons" to compiler in windows7:</p>
  
  <pre><code>-----------------------------------------------------------------------------------
  'cl' is not recognized as an internal or external command,
  operable program or batch file.
  scons: *** [out\windows-x86-MD-unicode-vs2008-rel\obj-static\src\featuresets\ada                                      pters\im-history\AddToChatRoomHistoryVisitor.obj] Error 1
  scons: building terminated because of errors.
  -----------------------------------------------------------------------------------
  </code></pre>
  
  <p>I have added path to environment variables already, but still met this problem.</p>
  
  <p>Below is the PATH info of environment variables:</p>
  
  <pre><code>--------------------------------------------------------------------------------------------
  PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v
  1.0\;C:\Program Files\CREDANT\Shield v7.1\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Fil
  es\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files\TortoiseSVN\bin;C:\Python27;C:\cygwin64\bin
  ;C:\Python27\scons-2.3.1;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program File
  s\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Progra
  m Files (x86)\Microsoft Visual Studio 10.0\VC\bin;C:\Python27\Scripts;C:\Program Files (x86)\Microso
  ft Visual Studio 10.0\VC\lib;C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include
  --------------------------------------------------------------------------------------------
  </code></pre>