diff --git a/Source/cmGlobalVisualStudio10IA64Generator.cxx b/Source/cmGlobalVisualStudio10IA64Generator.cxx
index 40bc30774..fabe717bb 100644
--- a/Source/cmGlobalVisualStudio10IA64Generator.cxx
+++ b/Source/cmGlobalVisualStudio10IA64Generator.cxx
@@ -17,6 +17,7 @@
 cmGlobalVisualStudio10IA64Generator::cmGlobalVisualStudio10IA64Generator()
 {
   this->ArchitectureId = "x64";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_IA64";
 }
 
 //----------------------------------------------------------------------------
@@ -28,14 +29,6 @@ void cmGlobalVisualStudio10IA64Generator
   entry.Full = "";
 }
 
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio10IA64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  this->cmGlobalVisualStudio10Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_IA64", "TRUE");
-}
-
 //----------------------------------------------------------------------------
 void cmGlobalVisualStudio10IA64Generator
 ::EnableLanguage(std::vector<std::string> const& languages,
diff --git a/Source/cmGlobalVisualStudio10IA64Generator.h b/Source/cmGlobalVisualStudio10IA64Generator.h
index 25436777d..ae12cc32d 100644
--- a/Source/cmGlobalVisualStudio10IA64Generator.h
+++ b/Source/cmGlobalVisualStudio10IA64Generator.h
@@ -33,8 +33,6 @@ public:
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
 
-  virtual void AddPlatformDefinitions(cmMakefile* mf);
-
   virtual void EnableLanguage(std::vector<std::string>const& languages,
                               cmMakefile *, bool optional);
 };
diff --git a/Source/cmGlobalVisualStudio10Win64Generator.cxx b/Source/cmGlobalVisualStudio10Win64Generator.cxx
index d9db7317f..0352a46f5 100644
--- a/Source/cmGlobalVisualStudio10Win64Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Win64Generator.cxx
@@ -17,6 +17,7 @@
 cmGlobalVisualStudio10Win64Generator::cmGlobalVisualStudio10Win64Generator()
 {
   this->ArchitectureId = "x64";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_WIN64";
 }
 
 //----------------------------------------------------------------------------
@@ -28,14 +29,6 @@ void cmGlobalVisualStudio10Win64Generator
   entry.Full = "";
 }
 
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio10Win64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  this->cmGlobalVisualStudio10Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
-}
-
 //----------------------------------------------------------------------------
 void cmGlobalVisualStudio10Win64Generator
 ::EnableLanguage(std::vector<std::string> const& languages,
diff --git a/Source/cmGlobalVisualStudio10Win64Generator.h b/Source/cmGlobalVisualStudio10Win64Generator.h
index d95f770db..66d77a97a 100644
--- a/Source/cmGlobalVisualStudio10Win64Generator.h
+++ b/Source/cmGlobalVisualStudio10Win64Generator.h
@@ -33,8 +33,6 @@ public:
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
 
-  virtual void AddPlatformDefinitions(cmMakefile* mf);
-
   virtual void EnableLanguage(std::vector<std::string>const& languages,
                               cmMakefile *, bool optional);
 };
diff --git a/Source/cmGlobalVisualStudio11Win64Generator.cxx b/Source/cmGlobalVisualStudio11Win64Generator.cxx
index 5810b03dd..aca0a4e87 100644
--- a/Source/cmGlobalVisualStudio11Win64Generator.cxx
+++ b/Source/cmGlobalVisualStudio11Win64Generator.cxx
@@ -17,6 +17,7 @@
 cmGlobalVisualStudio11Win64Generator::cmGlobalVisualStudio11Win64Generator()
 {
   this->ArchitectureId = "x64";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_WIN64";
 }
 
 //----------------------------------------------------------------------------
@@ -27,11 +28,3 @@ void cmGlobalVisualStudio11Win64Generator
   entry.Brief = "Generates Visual Studio 11 Win64 project files.";
   entry.Full = "";
 }
-
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio11Win64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  this->cmGlobalVisualStudio11Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
-}
diff --git a/Source/cmGlobalVisualStudio11Win64Generator.h b/Source/cmGlobalVisualStudio11Win64Generator.h
index ff42281bd..bb33877e8 100644
--- a/Source/cmGlobalVisualStudio11Win64Generator.h
+++ b/Source/cmGlobalVisualStudio11Win64Generator.h
@@ -32,7 +32,5 @@ public:
 
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
-
-  virtual void AddPlatformDefinitions(cmMakefile* mf);
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio8Win64Generator.cxx b/Source/cmGlobalVisualStudio8Win64Generator.cxx
index 448230304..a84e44c9b 100644
--- a/Source/cmGlobalVisualStudio8Win64Generator.cxx
+++ b/Source/cmGlobalVisualStudio8Win64Generator.cxx
@@ -20,6 +20,7 @@
 cmGlobalVisualStudio8Win64Generator::cmGlobalVisualStudio8Win64Generator()
 {
   this->ArchitectureId = "x64";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_WIN64";
 }
 
 //----------------------------------------------------------------------------
@@ -30,11 +31,3 @@ void cmGlobalVisualStudio8Win64Generator
   entry.Brief = "Generates Visual Studio 8 2005 Win64 project files.";
   entry.Full = "";
 }
-
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio8Win64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  this->cmGlobalVisualStudio8Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
-}
diff --git a/Source/cmGlobalVisualStudio8Win64Generator.h b/Source/cmGlobalVisualStudio8Win64Generator.h
index 883b74af2..4283c2869 100644
--- a/Source/cmGlobalVisualStudio8Win64Generator.h
+++ b/Source/cmGlobalVisualStudio8Win64Generator.h
@@ -38,11 +38,5 @@ public:
 
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
-
-  /**
-   * Try to determine system infomation such as shared library
-   * extension, pthreads, byte order etc.
-   */
-  virtual void AddPlatformDefinitions(cmMakefile *);
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio9IA64Generator.cxx b/Source/cmGlobalVisualStudio9IA64Generator.cxx
index c56413b45..6b0ed600f 100644
--- a/Source/cmGlobalVisualStudio9IA64Generator.cxx
+++ b/Source/cmGlobalVisualStudio9IA64Generator.cxx
@@ -17,6 +17,7 @@
 cmGlobalVisualStudio9IA64Generator::cmGlobalVisualStudio9IA64Generator()
 {
   this->ArchitectureId = "Itanium";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_IA64";
 }
 
 //----------------------------------------------------------------------------
@@ -27,11 +28,3 @@ void cmGlobalVisualStudio9IA64Generator
   entry.Brief = "Generates Visual Studio 9 2008 Itanium project files.";
   entry.Full = "";
 }
-
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio9IA64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  cmGlobalVisualStudio9Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_IA64", "TRUE");
-}
diff --git a/Source/cmGlobalVisualStudio9IA64Generator.h b/Source/cmGlobalVisualStudio9IA64Generator.h
index ac962416b..0e5861ac4 100644
--- a/Source/cmGlobalVisualStudio9IA64Generator.h
+++ b/Source/cmGlobalVisualStudio9IA64Generator.h
@@ -38,11 +38,5 @@ public:
 
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
-
-  /**
-   * Try to determine system infomation such as shared library
-   * extension, pthreads, byte order etc.
-   */
-  virtual void AddPlatformDefinitions(cmMakefile *);
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio9Win64Generator.cxx b/Source/cmGlobalVisualStudio9Win64Generator.cxx
index f58cde5fc..37288b693 100644
--- a/Source/cmGlobalVisualStudio9Win64Generator.cxx
+++ b/Source/cmGlobalVisualStudio9Win64Generator.cxx
@@ -17,6 +17,7 @@
 cmGlobalVisualStudio9Win64Generator::cmGlobalVisualStudio9Win64Generator()
 {
   this->ArchitectureId = "x64";
+  this->AdditionalPlatformDefinition = "CMAKE_FORCE_WIN64";
 }
 
 //----------------------------------------------------------------------------
@@ -27,11 +28,3 @@ void cmGlobalVisualStudio9Win64Generator
   entry.Brief = "Generates Visual Studio 9 2008 Win64 project files.";
   entry.Full = "";
 }
-
-//----------------------------------------------------------------------------
-void cmGlobalVisualStudio9Win64Generator
-::AddPlatformDefinitions(cmMakefile* mf)
-{
-  cmGlobalVisualStudio9Generator::AddPlatformDefinitions(mf);
-  mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
-}
diff --git a/Source/cmGlobalVisualStudio9Win64Generator.h b/Source/cmGlobalVisualStudio9Win64Generator.h
index de7a1820b..713c402ab 100644
--- a/Source/cmGlobalVisualStudio9Win64Generator.h
+++ b/Source/cmGlobalVisualStudio9Win64Generator.h
@@ -38,11 +38,5 @@ public:
 
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
-
-  /**
-   * Try to determine system infomation such as shared library
-   * extension, pthreads, byte order etc.
-   */
-  virtual void AddPlatformDefinitions(cmMakefile *);
 };
 #endif
diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index ea6757dea..a51735154 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -22,6 +22,7 @@
 cmGlobalVisualStudioGenerator::cmGlobalVisualStudioGenerator()
 {
   this->ArchitectureId = "X86";
+  this->AdditionalPlatformDefinition = NULL;
 }
 
 //----------------------------------------------------------------------------
@@ -493,6 +494,11 @@ void cmGlobalVisualStudioGenerator::AddPlatformDefinitions(cmMakefile* mf)
 {
   mf->AddDefinition("MSVC_C_ARCHITECTURE_ID", this->ArchitectureId);
   mf->AddDefinition("MSVC_CXX_ARCHITECTURE_ID", this->ArchitectureId);
+
+  if(this->AdditionalPlatformDefinition)
+    {
+    mf->AddDefinition(this->AdditionalPlatformDefinition, "TRUE");
+    }
 }
 
 //----------------------------------------------------------------------------
diff --git a/Source/cmGlobalVisualStudioGenerator.h b/Source/cmGlobalVisualStudioGenerator.h
index cebf7d741..7258e313e 100644
--- a/Source/cmGlobalVisualStudioGenerator.h
+++ b/Source/cmGlobalVisualStudioGenerator.h
@@ -99,6 +99,7 @@ protected:
   typedef std::map<cmTarget*, cmStdString> UtilityDependsMap;
   UtilityDependsMap UtilityDepends;
   const char* ArchitectureId;
+  const char* AdditionalPlatformDefinition;
 
 private:
   void ComputeTargetObjects(cmGeneratorTarget* gt) const;