Adding a Compiler PreprocessorDefinitions in VS2010 C++ based on the value of %(Link->SubSystem)

I would have expected the following snippet of msbuild to work at the bottom of my .vcxproj files:

 <ItemDefinitionGroup>
   <ClCompile>
<PreprocessorDefinitions Condition='%(Link.SubSystem)'=='Windows'>SomethingWinSpecific;%(PreprocessorDefinitions)
   </ClCompile>
  </ItemDefinitionGroup>

except no matter what I do %(Link.SubSystem) is empty. I even printed out its value in various targets throughout a build and it appears to remain empty until the Link step begins. So my question is开发者_Go百科, is there any way to access the value of Link.SubSystem before the Compile step?

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Link.SubSystem distinquishes between a Windows app and Console App, so Platform will not work.