Merge topic 'vs-refactor'

b91f6f39f7 VS: Track explicitly when platform is specified in generator name
89cc3d432b VS: Move platform name members to top-level global generator
40a732800d VS: Clarify global generator constructor interface
5ca7e5057b Help: Document VS generator default platform selection

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2786

24 files changed, 112 insertions, 71 deletions

diff --git a/Help/generator/Visual Studio 10 2010.rst b/Help/generator/Visual Studio 10 2010.rst
index 0446b8c..4bf9a8f 100644
--- a/Help/generator/Visual Studio 10 2010.rst
+++ b/Help/generator/Visual Studio 10 2010.rst
@@ -15,6 +15,8 @@ projects (Database, Website, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Help/generator/Visual Studio 11 2012.rst b/Help/generator/Visual Studio 11 2012.rst
index 8fddbb3..5d89a6e 100644
--- a/Help/generator/Visual Studio 11 2012.rst
+++ b/Help/generator/Visual Studio 11 2012.rst
@@ -15,6 +15,8 @@ projects (JavaScript, Database, Website, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Help/generator/Visual Studio 12 2013.rst b/Help/generator/Visual Studio 12 2013.rst
index 8b4c162..d342c53 100644
--- a/Help/generator/Visual Studio 12 2013.rst
+++ b/Help/generator/Visual Studio 12 2013.rst
@@ -15,6 +15,8 @@ projects (JavaScript, Powershell, Python, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Help/generator/Visual Studio 14 2015.rst b/Help/generator/Visual Studio 14 2015.rst
index 917d8e5..106b7c5 100644
--- a/Help/generator/Visual Studio 14 2015.rst
+++ b/Help/generator/Visual Studio 14 2015.rst
@@ -12,6 +12,8 @@ projects (JavaScript, Powershell, Python, etc.) are not supported.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Help/generator/Visual Studio 15 2017.rst b/Help/generator/Visual Studio 15 2017.rst
index 42a3bb6..52c1fa0 100644
--- a/Help/generator/Visual Studio 15 2017.rst
+++ b/Help/generator/Visual Studio 15 2017.rst
@@ -28,6 +28,8 @@ by default.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Help/generator/Visual Studio 9 2008.rst b/Help/generator/Visual Studio 9 2008.rst
index a29033f..a09d047 100644
--- a/Help/generator/Visual Studio 9 2008.rst
+++ b/Help/generator/Visual Studio 9 2008.rst
@@ -6,6 +6,8 @@ Generates Visual Studio 9 2008 project files.
 Platform Selection
 ^^^^^^^^^^^^^^^^^^
 
+The default target platform name (architecture) is ``Win32``.
+
 The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set, perhaps
 via the :manual:`cmake(1)` ``-A`` option, to specify a target platform
 name (architecture).  For example:
diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index 4709194..a6bec4b 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -90,8 +90,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio10Generator::NewFactory()
 }
 
 cmGlobalVisualStudio10Generator::cmGlobalVisualStudio10Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio8Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio8Generator(cm, name, platformInGeneratorName)
 {
   std::string vc10Express;
   this->ExpressEdition = cmSystemTools::ReadRegistryValue(
@@ -406,7 +407,7 @@ bool cmGlobalVisualStudio10Generator::InitializeSystem(cmMakefile* mf)
       return false;
     }
   } else if (this->SystemName == "Android") {
-    if (this->DefaultPlatformName != "Win32") {
+    if (this->PlatformInGeneratorName) {
       std::ostringstream e;
       e << "CMAKE_SYSTEM_NAME is 'Android' but CMAKE_GENERATOR "
         << "specifies a platform too: '" << this->GetName() << "'";
@@ -437,7 +438,7 @@ bool cmGlobalVisualStudio10Generator::InitializeWindows(cmMakefile*)
 
 bool cmGlobalVisualStudio10Generator::InitializeWindowsCE(cmMakefile* mf)
 {
-  if (this->DefaultPlatformName != "Win32") {
+  if (this->PlatformInGeneratorName) {
     std::ostringstream e;
     e << "CMAKE_SYSTEM_NAME is 'WindowsCE' but CMAKE_GENERATOR "
       << "specifies a platform too: '" << this->GetName() << "'";
diff --git a/Source/cmGlobalVisualStudio10Generator.h b/Source/cmGlobalVisualStudio10Generator.h
index 1e72959..7f7c516 100644
--- a/Source/cmGlobalVisualStudio10Generator.h
+++ b/Source/cmGlobalVisualStudio10Generator.h
@@ -14,8 +14,6 @@
 class cmGlobalVisualStudio10Generator : public cmGlobalVisualStudio8Generator
 {
 public:
-  cmGlobalVisualStudio10Generator(cmake* cm, const std::string& name,
-                                  const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   bool MatchesGeneratorName(const std::string& name) const override;
@@ -125,6 +123,9 @@ public:
   cmIDEFlagTable const* GetNasmFlagTable() const;
 
 protected:
+  cmGlobalVisualStudio10Generator(cmake* cm, const std::string& name,
+                                  std::string const& platformInGeneratorName);
+
   void Generate() override;
   virtual bool InitializeSystem(cmMakefile* mf);
   virtual bool InitializeWindows(cmMakefile* mf);
@@ -168,6 +169,8 @@ protected:
 
 private:
   class Factory;
+  friend class Factory;
+
   struct LongestSourcePath
   {
     LongestSourcePath()
diff --git a/Source/cmGlobalVisualStudio11Generator.cxx b/Source/cmGlobalVisualStudio11Generator.cxx
index 499ae32..07318cf 100644
--- a/Source/cmGlobalVisualStudio11Generator.cxx
+++ b/Source/cmGlobalVisualStudio11Generator.cxx
@@ -92,8 +92,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio11Generator::NewFactory()
 }
 
 cmGlobalVisualStudio11Generator::cmGlobalVisualStudio11Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio10Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio10Generator(cm, name, platformInGeneratorName)
 {
   std::string vc11Express;
   this->ExpressEdition = cmSystemTools::ReadRegistryValue(
diff --git a/Source/cmGlobalVisualStudio11Generator.h b/Source/cmGlobalVisualStudio11Generator.h
index 6346da2..8b4c8b7 100644
--- a/Source/cmGlobalVisualStudio11Generator.h
+++ b/Source/cmGlobalVisualStudio11Generator.h
@@ -20,13 +20,14 @@ class cmake;
 class cmGlobalVisualStudio11Generator : public cmGlobalVisualStudio10Generator
 {
 public:
-  cmGlobalVisualStudio11Generator(cmake* cm, const std::string& name,
-                                  const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   bool MatchesGeneratorName(const std::string& name) const override;
 
 protected:
+  cmGlobalVisualStudio11Generator(cmake* cm, const std::string& name,
+                                  std::string const& platformInGeneratorName);
+
   bool InitializeWindowsPhone(cmMakefile* mf) override;
   bool InitializeWindowsStore(cmMakefile* mf) override;
   bool SelectWindowsPhoneToolset(std::string& toolset) const override;
diff --git a/Source/cmGlobalVisualStudio12Generator.cxx b/Source/cmGlobalVisualStudio12Generator.cxx
index 2cec48c..f9da68c 100644
--- a/Source/cmGlobalVisualStudio12Generator.cxx
+++ b/Source/cmGlobalVisualStudio12Generator.cxx
@@ -75,8 +75,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio12Generator::NewFactory()
 }
 
 cmGlobalVisualStudio12Generator::cmGlobalVisualStudio12Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio11Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio11Generator(cm, name, platformInGeneratorName)
 {
   std::string vc12Express;
   this->ExpressEdition = cmSystemTools::ReadRegistryValue(
diff --git a/Source/cmGlobalVisualStudio12Generator.h b/Source/cmGlobalVisualStudio12Generator.h
index 1b7bbc9..53b7091 100644
--- a/Source/cmGlobalVisualStudio12Generator.h
+++ b/Source/cmGlobalVisualStudio12Generator.h
@@ -18,13 +18,14 @@ class cmake;
 class cmGlobalVisualStudio12Generator : public cmGlobalVisualStudio11Generator
 {
 public:
-  cmGlobalVisualStudio12Generator(cmake* cm, const std::string& name,
-                                  const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   bool MatchesGeneratorName(const std::string& name) const override;
 
 protected:
+  cmGlobalVisualStudio12Generator(cmake* cm, const std::string& name,
+                                  std::string const& platformInGeneratorName);
+
   bool ProcessGeneratorToolsetField(std::string const& key,
                                     std::string const& value) override;
 
@@ -44,5 +45,6 @@ protected:
 
 private:
   class Factory;
+  friend class Factory;
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio14Generator.cxx b/Source/cmGlobalVisualStudio14Generator.cxx
index a6dbc23..8f7dac9 100644
--- a/Source/cmGlobalVisualStudio14Generator.cxx
+++ b/Source/cmGlobalVisualStudio14Generator.cxx
@@ -75,8 +75,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio14Generator::NewFactory()
 }
 
 cmGlobalVisualStudio14Generator::cmGlobalVisualStudio14Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio12Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio12Generator(cm, name, platformInGeneratorName)
 {
   std::string vc14Express;
   this->ExpressEdition = cmSystemTools::ReadRegistryValue(
diff --git a/Source/cmGlobalVisualStudio14Generator.h b/Source/cmGlobalVisualStudio14Generator.h
index 4be21e0..32008b0 100644
--- a/Source/cmGlobalVisualStudio14Generator.h
+++ b/Source/cmGlobalVisualStudio14Generator.h
@@ -18,13 +18,14 @@ class cmake;
 class cmGlobalVisualStudio14Generator : public cmGlobalVisualStudio12Generator
 {
 public:
-  cmGlobalVisualStudio14Generator(cmake* cm, const std::string& name,
-                                  const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   bool MatchesGeneratorName(const std::string& name) const override;
 
 protected:
+  cmGlobalVisualStudio14Generator(cmake* cm, const std::string& name,
+                                  std::string const& platformInGeneratorName);
+
   bool InitializeWindows(cmMakefile* mf) override;
   bool InitializeWindowsStore(cmMakefile* mf) override;
   bool SelectWindowsStoreToolset(std::string& toolset) const override;
@@ -47,5 +48,6 @@ protected:
 
 private:
   class Factory;
+  friend class Factory;
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio15Generator.cxx b/Source/cmGlobalVisualStudio15Generator.cxx
index 2af17e8..eb49e87 100644
--- a/Source/cmGlobalVisualStudio15Generator.cxx
+++ b/Source/cmGlobalVisualStudio15Generator.cxx
@@ -76,8 +76,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio15Generator::NewFactory()
 }
 
 cmGlobalVisualStudio15Generator::cmGlobalVisualStudio15Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio14Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio14Generator(cm, name, platformInGeneratorName)
 {
   this->ExpressEdition = false;
   this->DefaultPlatformToolset = "v141";
diff --git a/Source/cmGlobalVisualStudio15Generator.h b/Source/cmGlobalVisualStudio15Generator.h
index 233f3bc..da85d23 100644
--- a/Source/cmGlobalVisualStudio15Generator.h
+++ b/Source/cmGlobalVisualStudio15Generator.h
@@ -18,8 +18,6 @@ class cmake;
 class cmGlobalVisualStudio15Generator : public cmGlobalVisualStudio14Generator
 {
 public:
-  cmGlobalVisualStudio15Generator(cmake* cm, const std::string& name,
-                                  const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   bool MatchesGeneratorName(const std::string& name) const override;
@@ -32,6 +30,9 @@ public:
   std::string GetAuxiliaryToolset() const override;
 
 protected:
+  cmGlobalVisualStudio15Generator(cmake* cm, const std::string& name,
+                                  std::string const& platformInGeneratorName);
+
   bool InitializeWindows(cmMakefile* mf) override;
   bool SelectWindowsStoreToolset(std::string& toolset) const override;
 
@@ -53,6 +54,7 @@ protected:
 
 private:
   class Factory;
+  friend class Factory;
   mutable cmVSSetupAPIHelper vsSetupAPIHelper;
 };
 #endif
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index 3648086..5855177 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -41,19 +41,13 @@ static cmVS7FlagTable cmVS7ExtraFlagTable[] = {
 };
 
 cmGlobalVisualStudio7Generator::cmGlobalVisualStudio7Generator(
-  cmake* cm, const std::string& platformName)
-  : cmGlobalVisualStudioGenerator(cm)
+  cmake* cm, std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudioGenerator(cm, platformInGeneratorName)
 {
   this->IntelProjectVersion = 0;
   this->DevEnvCommandInitialized = false;
   this->MasmEnabled = false;
   this->NasmEnabled = false;
-
-  if (platformName.empty()) {
-    this->DefaultPlatformName = "Win32";
-  } else {
-    this->DefaultPlatformName = platformName;
-  }
   this->ExtraFlagTable = cmVS7ExtraFlagTable;
 }
 
@@ -263,14 +257,6 @@ Json::Value cmGlobalVisualStudio7Generator::GetJson() const
 }
 #endif
 
-std::string const& cmGlobalVisualStudio7Generator::GetPlatformName() const
-{
-  if (!this->GeneratorPlatform.empty()) {
-    return this->GeneratorPlatform;
-  }
-  return this->DefaultPlatformName;
-}
-
 bool cmGlobalVisualStudio7Generator::SetSystemName(std::string const& s,
                                                    cmMakefile* mf)
 {
@@ -279,18 +265,6 @@ bool cmGlobalVisualStudio7Generator::SetSystemName(std::string const& s,
   return this->cmGlobalVisualStudioGenerator::SetSystemName(s, mf);
 }
 
-bool cmGlobalVisualStudio7Generator::SetGeneratorPlatform(std::string const& p,
-                                                          cmMakefile* mf)
-{
-  if (this->GetPlatformName() == "x64") {
-    mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
-  } else if (this->GetPlatformName() == "Itanium") {
-    mf->AddDefinition("CMAKE_FORCE_IA64", "TRUE");
-  }
-  mf->AddDefinition("CMAKE_VS_PLATFORM_NAME", this->GetPlatformName().c_str());
-  return this->cmGlobalVisualStudioGenerator::SetGeneratorPlatform(p, mf);
-}
-
 void cmGlobalVisualStudio7Generator::Generate()
 {
   // first do the superclass method
diff --git a/Source/cmGlobalVisualStudio7Generator.h b/Source/cmGlobalVisualStudio7Generator.h
index f092b56..d2a2a38 100644
--- a/Source/cmGlobalVisualStudio7Generator.h
+++ b/Source/cmGlobalVisualStudio7Generator.h
@@ -18,13 +18,8 @@ struct cmIDEFlagTable;
 class cmGlobalVisualStudio7Generator : public cmGlobalVisualStudioGenerator
 {
 public:
-  cmGlobalVisualStudio7Generator(cmake* cm,
-                                 const std::string& platformName = "");
   ~cmGlobalVisualStudio7Generator();
 
-  ///! Get the name for the platform.
-  std::string const& GetPlatformName() const;
-
   ///! Create a local generator appropriate to this Global Generator
   cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) override;
 
@@ -34,8 +29,6 @@ public:
 
   bool SetSystemName(std::string const& s, cmMakefile* mf) override;
 
-  bool SetGeneratorPlatform(std::string const& p, cmMakefile* mf) override;
-
   /**
    * Utilized by the generator factory to determine if this generator
    * supports toolsets.
@@ -110,6 +103,9 @@ public:
   cmIDEFlagTable const* ExtraFlagTable;
 
 protected:
+  cmGlobalVisualStudio7Generator(cmake* cm,
+                                 std::string const& platformInGeneratorName);
+
   void Generate() override;
 
   std::string const& GetDevEnvCommand();
@@ -166,8 +162,6 @@ protected:
   // Set during OutputSLNFile with the name of the current project.
   // There is one SLN file per project.
   std::string CurrentProject;
-  std::string GeneratorPlatform;
-  std::string DefaultPlatformName;
   bool MasmEnabled;
   bool NasmEnabled;
 
diff --git a/Source/cmGlobalVisualStudio8Generator.cxx b/Source/cmGlobalVisualStudio8Generator.cxx
index ee118f1..55284c9 100644
--- a/Source/cmGlobalVisualStudio8Generator.cxx
+++ b/Source/cmGlobalVisualStudio8Generator.cxx
@@ -12,8 +12,9 @@
 #include "cmake.h"
 
 cmGlobalVisualStudio8Generator::cmGlobalVisualStudio8Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio71Generator(cm, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio71Generator(cm, platformInGeneratorName)
 {
   this->ProjectConfigurationSectionName = "ProjectConfigurationPlatforms";
   this->Name = name;
@@ -60,7 +61,7 @@ void cmGlobalVisualStudio8Generator::AddPlatformDefinitions(cmMakefile* mf)
 bool cmGlobalVisualStudio8Generator::SetGeneratorPlatform(std::string const& p,
                                                           cmMakefile* mf)
 {
-  if (this->DefaultPlatformName == "Win32") {
+  if (!this->PlatformInGeneratorName) {
     this->GeneratorPlatform = p;
     return this->cmGlobalVisualStudio7Generator::SetGeneratorPlatform("", mf);
   } else {
diff --git a/Source/cmGlobalVisualStudio8Generator.h b/Source/cmGlobalVisualStudio8Generator.h
index cacfa68..8719bf3 100644
--- a/Source/cmGlobalVisualStudio8Generator.h
+++ b/Source/cmGlobalVisualStudio8Generator.h
@@ -13,9 +13,6 @@
 class cmGlobalVisualStudio8Generator : public cmGlobalVisualStudio71Generator
 {
 public:
-  cmGlobalVisualStudio8Generator(cmake* cm, const std::string& name,
-                                 const std::string& platformName);
-
   ///! Get the name for the generator.
   std::string GetName() const override { return this->Name; }
 
@@ -45,6 +42,9 @@ public:
   }
 
 protected:
+  cmGlobalVisualStudio8Generator(cmake* cm, const std::string& name,
+                                 std::string const& platformInGeneratorName);
+
   void AddExtraIDETargets() override;
 
   std::string FindDevEnvCommand() override;
diff --git a/Source/cmGlobalVisualStudio9Generator.cxx b/Source/cmGlobalVisualStudio9Generator.cxx
index 760cce4..e784595 100644
--- a/Source/cmGlobalVisualStudio9Generator.cxx
+++ b/Source/cmGlobalVisualStudio9Generator.cxx
@@ -83,8 +83,9 @@ cmGlobalGeneratorFactory* cmGlobalVisualStudio9Generator::NewFactory()
 }
 
 cmGlobalVisualStudio9Generator::cmGlobalVisualStudio9Generator(
-  cmake* cm, const std::string& name, const std::string& platformName)
-  : cmGlobalVisualStudio8Generator(cm, name, platformName)
+  cmake* cm, const std::string& name,
+  std::string const& platformInGeneratorName)
+  : cmGlobalVisualStudio8Generator(cm, name, platformInGeneratorName)
 {
   this->Version = VS9;
   std::string vc9Express;
diff --git a/Source/cmGlobalVisualStudio9Generator.h b/Source/cmGlobalVisualStudio9Generator.h
index e537a3d..7bebfd6 100644
--- a/Source/cmGlobalVisualStudio9Generator.h
+++ b/Source/cmGlobalVisualStudio9Generator.h
@@ -13,8 +13,6 @@
 class cmGlobalVisualStudio9Generator : public cmGlobalVisualStudio8Generator
 {
 public:
-  cmGlobalVisualStudio9Generator(cmake* cm, const std::string& name,
-                                 const std::string& platformName);
   static cmGlobalGeneratorFactory* NewFactory();
 
   /**
@@ -30,6 +28,10 @@ public:
    */
   std::string GetUserMacrosRegKeyBase() override;
 
+protected:
+  cmGlobalVisualStudio9Generator(cmake* cm, const std::string& name,
+                                 std::string const& platformInGeneratorName);
+
 private:
   class Factory;
   friend class Factory;
diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index adf0a81..dc8de03 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -20,12 +20,20 @@
 #include "cmState.h"
 #include "cmTarget.h"
 
-cmGlobalVisualStudioGenerator::cmGlobalVisualStudioGenerator(cmake* cm)
+cmGlobalVisualStudioGenerator::cmGlobalVisualStudioGenerator(
+  cmake* cm, std::string const& platformInGeneratorName)
   : cmGlobalGenerator(cm)
 {
   cm->GetState()->SetIsGeneratorMultiConfig(true);
   cm->GetState()->SetWindowsShell(true);
   cm->GetState()->SetWindowsVSIDE(true);
+
+  if (platformInGeneratorName.empty()) {
+    this->DefaultPlatformName = "Win32";
+  } else {
+    this->DefaultPlatformName = platformInGeneratorName;
+    this->PlatformInGeneratorName = true;
+  }
 }
 
 cmGlobalVisualStudioGenerator::~cmGlobalVisualStudioGenerator()
@@ -43,6 +51,26 @@ void cmGlobalVisualStudioGenerator::SetVersion(VSVersion v)
   this->Version = v;
 }
 
+bool cmGlobalVisualStudioGenerator::SetGeneratorPlatform(std::string const& p,
+                                                         cmMakefile* mf)
+{
+  if (this->GetPlatformName() == "x64") {
+    mf->AddDefinition("CMAKE_FORCE_WIN64", "TRUE");
+  } else if (this->GetPlatformName() == "Itanium") {
+    mf->AddDefinition("CMAKE_FORCE_IA64", "TRUE");
+  }
+  mf->AddDefinition("CMAKE_VS_PLATFORM_NAME", this->GetPlatformName().c_str());
+  return this->cmGlobalGenerator::SetGeneratorPlatform(p, mf);
+}
+
+std::string const& cmGlobalVisualStudioGenerator::GetPlatformName() const
+{
+  if (!this->GeneratorPlatform.empty()) {
+    return this->GeneratorPlatform;
+  }
+  return this->DefaultPlatformName;
+}
+
 const char* cmGlobalVisualStudioGenerator::GetIDEVersion() const
 {
   switch (this->Version) {
diff --git a/Source/cmGlobalVisualStudioGenerator.h b/Source/cmGlobalVisualStudioGenerator.h
index 0d4491d..d44f5a5 100644
--- a/Source/cmGlobalVisualStudioGenerator.h
+++ b/Source/cmGlobalVisualStudioGenerator.h
@@ -41,7 +41,6 @@ public:
     VS15 = 150
   };
 
-  cmGlobalVisualStudioGenerator(cmake* cm);
   virtual ~cmGlobalVisualStudioGenerator();
 
   VSVersion GetVersion() const;
@@ -50,6 +49,14 @@ public:
   /** Is the installed VS an Express edition?  */
   bool IsExpressEdition() const { return this->ExpressEdition; }
 
+  bool SetGeneratorPlatform(std::string const& p, cmMakefile* mf) override;
+
+  /**
+   * Get the name of the target platform (architecture) for which we generate.
+   * The names are as defined by VS, e.g. "Win32", "x64", "Itanium", "ARM".
+   */
+  std::string const& GetPlatformName() const;
+
   /**
    * Configure CMake's Visual Studio macros file into the user's Visual
    * Studio macros directory.
@@ -133,6 +140,9 @@ public:
             bool dryRun) override;
 
 protected:
+  cmGlobalVisualStudioGenerator(cmake* cm,
+                                std::string const& platformInGeneratorName);
+
   void AddExtraIDETargets() override;
 
   // Does this VS version link targets to each other if there are
@@ -166,6 +176,10 @@ protected:
   VSVersion Version;
   bool ExpressEdition;
 
+  std::string GeneratorPlatform;
+  std::string DefaultPlatformName;
+  bool PlatformInGeneratorName = false;
+
 private:
   virtual std::string GetVSMakeProgram() = 0;
   void PrintCompilerAdvice(std::ostream&, std::string const&,