Merge topic 'vs2019'

57e48f16f2 VS: Add Visual Studio 16 2019 generator
bdef729646 VS: Parameterize VS 2017 generator to support future versions
68d316e0cf VS: Rename VS 2017 generator sources to be version-independent
d8ed309d05 VS: Parameterize cmVSSetupAPIHelper instances with VS version

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !2789

11 files changed, 257 insertions, 62 deletions

diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 91c45bc..c87ceba 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -696,10 +696,10 @@ if (WIN32)
       cmGlobalVisualStudio12Generator.cxx
       cmGlobalVisualStudio14Generator.h
       cmGlobalVisualStudio14Generator.cxx
-      cmGlobalVisualStudio15Generator.h
-      cmGlobalVisualStudio15Generator.cxx
       cmGlobalVisualStudioGenerator.cxx
       cmGlobalVisualStudioGenerator.h
+      cmGlobalVisualStudioVersionedGenerator.h
+      cmGlobalVisualStudioVersionedGenerator.cxx
       cmIDEFlagTable.h
       cmIDEOptions.cxx
       cmIDEOptions.h
diff --git a/Source/cmCMakeHostSystemInformationCommand.cxx b/Source/cmCMakeHostSystemInformationCommand.cxx
index 8822942..54f08bb 100644
--- a/Source/cmCMakeHostSystemInformationCommand.cxx
+++ b/Source/cmCMakeHostSystemInformationCommand.cxx
@@ -10,7 +10,7 @@
 #if defined(_WIN32)
 #  include "cmAlgorithms.h"
 #  include "cmGlobalGenerator.h"
-#  include "cmGlobalVisualStudio15Generator.h"
+#  include "cmGlobalVisualStudioVersionedGenerator.h"
 #  include "cmSystemTools.h"
 #  include "cmVSSetupHelper.h"
 #  define HAVE_VS_SETUP_HELPER
@@ -133,15 +133,31 @@ bool cmCMakeHostSystemInformationCommand::GetValue(
     // If generating for the VS 15 IDE, use the same instance.
     cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
     if (cmHasLiteralPrefix(gg->GetName(), "Visual Studio 15 ")) {
-      cmGlobalVisualStudio15Generator* vs15gen =
-        static_cast<cmGlobalVisualStudio15Generator*>(gg);
+      cmGlobalVisualStudioVersionedGenerator* vs15gen =
+        static_cast<cmGlobalVisualStudioVersionedGenerator*>(gg);
       if (vs15gen->GetVSInstance(value)) {
         return true;
       }
     }
 
     // Otherwise, find a VS 15 instance ourselves.
-    cmVSSetupAPIHelper vsSetupAPIHelper;
+    cmVSSetupAPIHelper vsSetupAPIHelper(15);
+    if (vsSetupAPIHelper.GetVSInstanceInfo(value)) {
+      cmSystemTools::ConvertToUnixSlashes(value);
+    }
+  } else if (key == "VS_16_DIR") {
+    // If generating for the VS 16 IDE, use the same instance.
+    cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
+    if (cmHasLiteralPrefix(gg->GetName(), "Visual Studio 16 ")) {
+      cmGlobalVisualStudioVersionedGenerator* vs16gen =
+        static_cast<cmGlobalVisualStudioVersionedGenerator*>(gg);
+      if (vs16gen->GetVSInstance(value)) {
+        return true;
+      }
+    }
+
+    // Otherwise, find a VS 16 instance ourselves.
+    cmVSSetupAPIHelper vsSetupAPIHelper(16);
     if (vsSetupAPIHelper.GetVSInstanceInfo(value)) {
       cmSystemTools::ConvertToUnixSlashes(value);
     }
diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index a6bec4b..2932970 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -1032,6 +1032,8 @@ const char* cmGlobalVisualStudio10Generator::GetToolsVersion() const
       return "14.0";
     case cmGlobalVisualStudioGenerator::VS15:
       return "15.0";
+    case cmGlobalVisualStudioGenerator::VS16:
+      return "16.0";
   }
   return "";
 }
diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index dc8de03..57510df 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -86,6 +86,8 @@ const char* cmGlobalVisualStudioGenerator::GetIDEVersion() const
       return "14.0";
     case cmGlobalVisualStudioGenerator::VS15:
       return "15.0";
+    case cmGlobalVisualStudioGenerator::VS16:
+      return "16.0";
   }
   return "";
 }
@@ -139,6 +141,15 @@ void cmGlobalVisualStudioGenerator::WriteSLNHeader(std::ostream& fout)
         fout << "# Visual Studio 15\n";
       }
       break;
+    case cmGlobalVisualStudioGenerator::VS16:
+      // Visual Studio 16 writes .sln format 12.00
+      fout << "Microsoft Visual Studio Solution File, Format Version 12.00\n";
+      if (this->ExpressEdition) {
+        fout << "# Visual Studio Express 16 for Windows Desktop\n";
+      } else {
+        fout << "# Visual Studio 16\n";
+      }
+      break;
   }
 }
 
diff --git a/Source/cmGlobalVisualStudioGenerator.h b/Source/cmGlobalVisualStudioGenerator.h
index d44f5a5..039191c 100644
--- a/Source/cmGlobalVisualStudioGenerator.h
+++ b/Source/cmGlobalVisualStudioGenerator.h
@@ -38,7 +38,8 @@ public:
     VS12 = 120,
     /* VS13 = 130 was skipped */
     VS14 = 140,
-    VS15 = 150
+    VS15 = 150,
+    VS16 = 160
   };
 
   virtual ~cmGlobalVisualStudioGenerator();
diff --git a/Source/cmGlobalVisualStudio15Generator.cxx b/Source/cmGlobalVisualStudioVersionedGenerator.cxx
index eb49e87..f06c019 100644
--- a/Source/cmGlobalVisualStudio15Generator.cxx
+++ b/Source/cmGlobalVisualStudioVersionedGenerator.cxx
@@ -1,6 +1,6 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmGlobalVisualStudio15Generator.h"
+#include "cmGlobalVisualStudioVersionedGenerator.h"
 
 #include "cmAlgorithms.h"
 #include "cmDocumentationEntry.h"
@@ -8,6 +8,61 @@
 #include "cmMakefile.h"
 #include "cmVSSetupHelper.h"
 
+#if defined(_M_ARM64)
+#  define HOST_PLATFORM_NAME "ARM64";
+#elif defined(_M_ARM)
+#  define HOST_PLATFORM_NAME "ARM";
+#elif defined(_M_IA64)
+#  define HOST_PLATFORM_NAME "Itanium";
+#else
+#  include "cmsys/SystemInformation.hxx"
+#endif
+
+static unsigned int VSVersionToMajor(
+  cmGlobalVisualStudioGenerator::VSVersion v)
+{
+  switch (v) {
+    case cmGlobalVisualStudioGenerator::VS9:
+      return 9;
+    case cmGlobalVisualStudioGenerator::VS10:
+      return 10;
+    case cmGlobalVisualStudioGenerator::VS11:
+      return 11;
+    case cmGlobalVisualStudioGenerator::VS12:
+      return 12;
+    case cmGlobalVisualStudioGenerator::VS14:
+      return 14;
+    case cmGlobalVisualStudioGenerator::VS15:
+      return 15;
+    case cmGlobalVisualStudioGenerator::VS16:
+      return 16;
+  }
+  return 0;
+}
+
+static const char* VSVersionToToolset(
+  cmGlobalVisualStudioGenerator::VSVersion v)
+{
+  switch (v) {
+    case cmGlobalVisualStudioGenerator::VS9:
+      return "v90";
+    case cmGlobalVisualStudioGenerator::VS10:
+      return "v100";
+    case cmGlobalVisualStudioGenerator::VS11:
+      return "v110";
+    case cmGlobalVisualStudioGenerator::VS12:
+      return "v120";
+    case cmGlobalVisualStudioGenerator::VS14:
+      return "v140";
+    case cmGlobalVisualStudioGenerator::VS15:
+      return "v141";
+    case cmGlobalVisualStudioGenerator::VS16:
+      // FIXME: VS 2019 Preview 1.1 uses v141 but preview 2 will use v142.
+      return "v141";
+  }
+  return "";
+}
+
 static const char vs15generatorName[] = "Visual Studio 15 2017";
 
 // Map generator name without year to name with year.
@@ -25,7 +80,7 @@ static const char* cmVS15GenName(const std::string& name, std::string& genName)
   return p;
 }
 
-class cmGlobalVisualStudio15Generator::Factory
+class cmGlobalVisualStudioVersionedGenerator::Factory15
   : public cmGlobalGeneratorFactory
 {
 public:
@@ -38,16 +93,19 @@ public:
       return 0;
     }
     if (!*p) {
-      return new cmGlobalVisualStudio15Generator(cm, genName, "");
+      return new cmGlobalVisualStudioVersionedGenerator(
+        cmGlobalVisualStudioGenerator::VS15, cm, genName, "");
     }
     if (*p++ != ' ') {
       return 0;
     }
     if (strcmp(p, "Win64") == 0) {
-      return new cmGlobalVisualStudio15Generator(cm, genName, "x64");
+      return new cmGlobalVisualStudioVersionedGenerator(
+        cmGlobalVisualStudioGenerator::VS15, cm, genName, "x64");
     }
     if (strcmp(p, "ARM") == 0) {
-      return new cmGlobalVisualStudio15Generator(cm, genName, "ARM");
+      return new cmGlobalVisualStudioVersionedGenerator(
+        cmGlobalVisualStudioGenerator::VS15, cm, genName, "ARM");
     }
     return 0;
   }
@@ -70,35 +128,122 @@ public:
   bool SupportsPlatform() const override { return true; }
 };
 
-cmGlobalGeneratorFactory* cmGlobalVisualStudio15Generator::NewFactory()
+cmGlobalGeneratorFactory*
+cmGlobalVisualStudioVersionedGenerator::NewFactory15()
+{
+  return new Factory15;
+}
+
+static const char vs16generatorName[] = "Visual Studio 16 2019";
+
+// Map generator name without year to name with year.
+static const char* cmVS16GenName(const std::string& name, std::string& genName)
+{
+  if (strncmp(name.c_str(), vs16generatorName,
+              sizeof(vs16generatorName) - 6) != 0) {
+    return 0;
+  }
+  const char* p = name.c_str() + sizeof(vs16generatorName) - 6;
+  if (cmHasLiteralPrefix(p, " 2019")) {
+    p += 5;
+  }
+  genName = std::string(vs16generatorName) + p;
+  return p;
+}
+
+class cmGlobalVisualStudioVersionedGenerator::Factory16
+  : public cmGlobalGeneratorFactory
+{
+public:
+  virtual cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
+                                                   cmake* cm) const
+  {
+    std::string genName;
+    const char* p = cmVS16GenName(name, genName);
+    if (!p) {
+      return 0;
+    }
+    if (!*p) {
+      return new cmGlobalVisualStudioVersionedGenerator(
+        cmGlobalVisualStudioGenerator::VS16, cm, genName, "");
+    }
+    return 0;
+  }
+
+  virtual void GetDocumentation(cmDocumentationEntry& entry) const
+  {
+    entry.Name = std::string(vs16generatorName);
+    entry.Brief = "Generates Visual Studio 2019 project files.  "
+                  "Use -A option to specify architecture.";
+  }
+
+  virtual void GetGenerators(std::vector<std::string>& names) const
+  {
+    names.push_back(vs16generatorName);
+  }
+
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
+};
+
+cmGlobalGeneratorFactory*
+cmGlobalVisualStudioVersionedGenerator::NewFactory16()
 {
-  return new Factory;
+  return new Factory16;
 }
 
-cmGlobalVisualStudio15Generator::cmGlobalVisualStudio15Generator(
-  cmake* cm, const std::string& name,
+cmGlobalVisualStudioVersionedGenerator::cmGlobalVisualStudioVersionedGenerator(
+  VSVersion version, cmake* cm, const std::string& name,
   std::string const& platformInGeneratorName)
   : cmGlobalVisualStudio14Generator(cm, name, platformInGeneratorName)
+  , vsSetupAPIHelper(VSVersionToMajor(version))
 {
+  this->Version = version;
   this->ExpressEdition = false;
-  this->DefaultPlatformToolset = "v141";
-  this->DefaultCLFlagTableName = "v141";
-  this->DefaultCSharpFlagTableName = "v141";
-  this->DefaultLinkFlagTableName = "v141";
-  this->Version = VS15;
+  this->DefaultPlatformToolset = VSVersionToToolset(this->Version);
+  this->DefaultCLFlagTableName = VSVersionToToolset(this->Version);
+  this->DefaultCSharpFlagTableName = VSVersionToToolset(this->Version);
+  this->DefaultLinkFlagTableName = VSVersionToToolset(this->Version);
+  if (this->Version >= cmGlobalVisualStudioGenerator::VS16) {
+#ifdef HOST_PLATFORM_NAME
+    this->DefaultPlatformName = HOST_PLATFORM_NAME;
+#else
+    cmsys::SystemInformation info;
+    if (info.Is64Bits()) {
+      this->DefaultPlatformName = "x64";
+    } else {
+      this->DefaultPlatformName = "Win32";
+    }
+#endif
+  }
 }
 
-bool cmGlobalVisualStudio15Generator::MatchesGeneratorName(
+bool cmGlobalVisualStudioVersionedGenerator::MatchesGeneratorName(
   const std::string& name) const
 {
   std::string genName;
-  if (cmVS15GenName(name, genName)) {
-    return genName == this->GetName();
+  switch (this->Version) {
+    case cmGlobalVisualStudioGenerator::VS9:
+    case cmGlobalVisualStudioGenerator::VS10:
+    case cmGlobalVisualStudioGenerator::VS11:
+    case cmGlobalVisualStudioGenerator::VS12:
+    case cmGlobalVisualStudioGenerator::VS14:
+      break;
+    case cmGlobalVisualStudioGenerator::VS15:
+      if (cmVS15GenName(name, genName)) {
+        return genName == this->GetName();
+      }
+      break;
+    case cmGlobalVisualStudioGenerator::VS16:
+      if (cmVS16GenName(name, genName)) {
+        return genName == this->GetName();
+      }
+      break;
   }
   return false;
 }
 
-bool cmGlobalVisualStudio15Generator::SetGeneratorInstance(
+bool cmGlobalVisualStudioVersionedGenerator::SetGeneratorInstance(
   std::string const& i, cmMakefile* mf)
 {
   if (!i.empty()) {
@@ -140,12 +285,13 @@ bool cmGlobalVisualStudio15Generator::SetGeneratorInstance(
   return true;
 }
 
-bool cmGlobalVisualStudio15Generator::GetVSInstance(std::string& dir) const
+bool cmGlobalVisualStudioVersionedGenerator::GetVSInstance(
+  std::string& dir) const
 {
   return vsSetupAPIHelper.GetVSInstanceInfo(dir);
 }
 
-bool cmGlobalVisualStudio15Generator::IsDefaultToolset(
+bool cmGlobalVisualStudioVersionedGenerator::IsDefaultToolset(
   const std::string& version) const
 {
   if (version.empty()) {
@@ -166,7 +312,7 @@ bool cmGlobalVisualStudio15Generator::IsDefaultToolset(
   return false;
 }
 
-std::string cmGlobalVisualStudio15Generator::GetAuxiliaryToolset() const
+std::string cmGlobalVisualStudioVersionedGenerator::GetAuxiliaryToolset() const
 {
   const char* version = this->GetPlatformToolsetVersion();
   if (version) {
@@ -185,7 +331,7 @@ std::string cmGlobalVisualStudio15Generator::GetAuxiliaryToolset() const
   return {};
 }
 
-bool cmGlobalVisualStudio15Generator::InitializeWindows(cmMakefile* mf)
+bool cmGlobalVisualStudioVersionedGenerator::InitializeWindows(cmMakefile* mf)
 {
   // If the Win 8.1 SDK is installed then we can select a SDK matching
   // the target Windows version.
@@ -197,13 +343,13 @@ bool cmGlobalVisualStudio15Generator::InitializeWindows(cmMakefile* mf)
   return this->SelectWindows10SDK(mf, false);
 }
 
-bool cmGlobalVisualStudio15Generator::SelectWindowsStoreToolset(
+bool cmGlobalVisualStudioVersionedGenerator::SelectWindowsStoreToolset(
   std::string& toolset) const
 {
   if (cmHasLiteralPrefix(this->SystemVersion, "10.0")) {
     if (this->IsWindowsStoreToolsetInstalled() &&
         this->IsWindowsDesktopToolsetInstalled()) {
-      toolset = "v141"; // VS 15 uses v141 toolset
+      toolset = VSVersionToToolset(this->Version);
       return true;
     } else {
       return false;
@@ -213,17 +359,19 @@ bool cmGlobalVisualStudio15Generator::SelectWindowsStoreToolset(
     toolset);
 }
 
-bool cmGlobalVisualStudio15Generator::IsWindowsDesktopToolsetInstalled() const
+bool cmGlobalVisualStudioVersionedGenerator::IsWindowsDesktopToolsetInstalled()
+  const
 {
-  return vsSetupAPIHelper.IsVS2017Installed();
+  return vsSetupAPIHelper.IsVSInstalled();
 }
 
-bool cmGlobalVisualStudio15Generator::IsWindowsStoreToolsetInstalled() const
+bool cmGlobalVisualStudioVersionedGenerator::IsWindowsStoreToolsetInstalled()
+  const
 {
   return vsSetupAPIHelper.IsWin10SDKInstalled();
 }
 
-bool cmGlobalVisualStudio15Generator::IsWin81SDKInstalled() const
+bool cmGlobalVisualStudioVersionedGenerator::IsWin81SDKInstalled() const
 {
   // Does the VS installer tool know about one?
   if (vsSetupAPIHelper.IsWin81SDKInstalled()) {
@@ -245,18 +393,23 @@ bool cmGlobalVisualStudio15Generator::IsWin81SDKInstalled() const
   return false;
 }
 
-std::string cmGlobalVisualStudio15Generator::GetWindows10SDKMaxVersion() const
+std::string cmGlobalVisualStudioVersionedGenerator::GetWindows10SDKMaxVersion()
+  const
 {
   return std::string();
 }
 
-std::string cmGlobalVisualStudio15Generator::FindMSBuildCommand()
+std::string cmGlobalVisualStudioVersionedGenerator::FindMSBuildCommand()
 {
   std::string msbuild;
 
   // Ask Visual Studio Installer tool.
   std::string vs;
   if (vsSetupAPIHelper.GetVSInstanceInfo(vs)) {
+    msbuild = vs + "/MSBuild/Current/Bin/MSBuild.exe";
+    if (cmSystemTools::FileExists(msbuild)) {
+      return msbuild;
+    }
     msbuild = vs + "/MSBuild/15.0/Bin/MSBuild.exe";
     if (cmSystemTools::FileExists(msbuild)) {
       return msbuild;
@@ -267,7 +420,7 @@ std::string cmGlobalVisualStudio15Generator::FindMSBuildCommand()
   return msbuild;
 }
 
-std::string cmGlobalVisualStudio15Generator::FindDevEnvCommand()
+std::string cmGlobalVisualStudioVersionedGenerator::FindDevEnvCommand()
 {
   std::string devenv;
 
diff --git a/Source/cmGlobalVisualStudio15Generator.h b/Source/cmGlobalVisualStudioVersionedGenerator.h
index da85d23..466816b 100644
--- a/Source/cmGlobalVisualStudio15Generator.h
+++ b/Source/cmGlobalVisualStudioVersionedGenerator.h
@@ -1,7 +1,7 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef cmGlobalVisualStudio15Generator_h
-#define cmGlobalVisualStudio15Generator_h
+#ifndef cmGlobalVisualStudioVersionedGenerator_h
+#define cmGlobalVisualStudioVersionedGenerator_h
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
@@ -14,11 +14,13 @@
 class cmGlobalGeneratorFactory;
 class cmake;
 
-/** \class cmGlobalVisualStudio15Generator  */
-class cmGlobalVisualStudio15Generator : public cmGlobalVisualStudio14Generator
+/** \class cmGlobalVisualStudioVersionedGenerator  */
+class cmGlobalVisualStudioVersionedGenerator
+  : public cmGlobalVisualStudio14Generator
 {
 public:
-  static cmGlobalGeneratorFactory* NewFactory();
+  static cmGlobalGeneratorFactory* NewFactory15();
+  static cmGlobalGeneratorFactory* NewFactory16();
 
   bool MatchesGeneratorName(const std::string& name) const override;
 
@@ -30,8 +32,9 @@ public:
   std::string GetAuxiliaryToolset() const override;
 
 protected:
-  cmGlobalVisualStudio15Generator(cmake* cm, const std::string& name,
-                                  std::string const& platformInGeneratorName);
+  cmGlobalVisualStudioVersionedGenerator(
+    VSVersion version, cmake* cm, const std::string& name,
+    std::string const& platformInGeneratorName);
 
   bool InitializeWindows(cmMakefile* mf) override;
   bool SelectWindowsStoreToolset(std::string& toolset) const override;
@@ -53,8 +56,10 @@ protected:
   std::string FindDevEnvCommand() override;
 
 private:
-  class Factory;
-  friend class Factory;
+  class Factory15;
+  friend class Factory15;
+  class Factory16;
+  friend class Factory16;
   mutable cmVSSetupAPIHelper vsSetupAPIHelper;
 };
 #endif
diff --git a/Source/cmVSSetupHelper.cxx b/Source/cmVSSetupHelper.cxx
index d80b5a2..9187c29 100644
--- a/Source/cmVSSetupHelper.cxx
+++ b/Source/cmVSSetupHelper.cxx
@@ -57,8 +57,9 @@ std::string VSInstanceInfo::GetInstallLocation() const
   return loc;
 }
 
-cmVSSetupAPIHelper::cmVSSetupAPIHelper()
-  : setupConfig(NULL)
+cmVSSetupAPIHelper::cmVSSetupAPIHelper(unsigned int version)
+  : Version(version)
+  , setupConfig(NULL)
   , setupConfig2(NULL)
   , setupHelper(NULL)
   , initializationFailure(false)
@@ -88,7 +89,7 @@ bool cmVSSetupAPIHelper::SetVSInstance(std::string const& vsInstallLocation)
   return this->EnumerateAndChooseVSInstance();
 }
 
-bool cmVSSetupAPIHelper::IsVS2017Installed()
+bool cmVSSetupAPIHelper::IsVSInstalled()
 {
   return this->EnumerateAndChooseVSInstance();
 }
@@ -312,11 +313,11 @@ bool cmVSSetupAPIHelper::EnumerateAndChooseVSInstance()
     return false;
 
   std::string envVSCommonToolsDir;
+  std::string envVSCommonToolsDirEnvName =
+    "VS" + std::to_string(this->Version) + "0COMNTOOLS";
 
-  // FIXME: When we support VS versions beyond 2017, the version
-  // to choose will be passed in by the caller.  We need to map that
-  // to a per-version name of this environment variable.
-  if (cmSystemTools::GetEnv("VS150COMNTOOLS", envVSCommonToolsDir)) {
+  if (cmSystemTools::GetEnv(envVSCommonToolsDirEnvName.c_str(),
+                            envVSCommonToolsDir)) {
     cmSystemTools::ConvertToUnixSlashes(envVSCommonToolsDir);
   }
 
@@ -328,8 +329,7 @@ bool cmVSSetupAPIHelper::EnumerateAndChooseVSInstance()
     return false;
   }
 
-  // FIXME: Add a way for caller to specify other versions.
-  std::wstring wantVersion = std::to_wstring(15) + L'.';
+  std::wstring const wantVersion = std::to_wstring(this->Version) + L'.';
 
   SmartCOMPtr<ISetupInstance> instance;
   while (SUCCEEDED(enumInstances->Next(1, &instance, NULL)) && instance) {
diff --git a/Source/cmVSSetupHelper.h b/Source/cmVSSetupHelper.h
index b9cca45..4748a7a 100644
--- a/Source/cmVSSetupHelper.h
+++ b/Source/cmVSSetupHelper.h
@@ -120,12 +120,12 @@ struct VSInstanceInfo
 class cmVSSetupAPIHelper
 {
 public:
-  cmVSSetupAPIHelper();
+  cmVSSetupAPIHelper(unsigned int version);
   ~cmVSSetupAPIHelper();
 
   bool SetVSInstance(std::string const& vsInstallLocation);
 
-  bool IsVS2017Installed();
+  bool IsVSInstalled();
   bool GetVSInstanceInfo(std::string& vsInstallLocation);
   bool GetVCToolsetVersion(std::string& vsToolsetVersion);
   bool IsWin10SDKInstalled();
@@ -140,6 +140,8 @@ private:
   int ChooseVSInstance(const std::vector<VSInstanceInfo>& vecVSInstances);
   bool EnumerateAndChooseVSInstance();
 
+  unsigned int Version;
+
   // COM ptrs to query about VS instances
   SmartCOMPtr<ISetupConfiguration> setupConfig;
   SmartCOMPtr<ISetupConfiguration2> setupConfig2;
diff --git a/Source/cmVisualStudioGeneratorOptions.cxx b/Source/cmVisualStudioGeneratorOptions.cxx
index afe9230..5c3e533 100644
--- a/Source/cmVisualStudioGeneratorOptions.cxx
+++ b/Source/cmVisualStudioGeneratorOptions.cxx
@@ -70,6 +70,7 @@ void cmVisualStudioGeneratorOptions::FixExceptionHandlingDefault()
     case cmGlobalVisualStudioGenerator::VS12:
     case cmGlobalVisualStudioGenerator::VS14:
     case cmGlobalVisualStudioGenerator::VS15:
+    case cmGlobalVisualStudioGenerator::VS16:
       // by default VS puts <ExceptionHandling></ExceptionHandling> empty
       // for a project, to make our projects look the same put a new line
       // and space over for the closing </ExceptionHandling> as the default
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index bfb066d..dfdcf8a 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -55,8 +55,8 @@
 #    include "cmGlobalVisualStudio11Generator.h"
 #    include "cmGlobalVisualStudio12Generator.h"
 #    include "cmGlobalVisualStudio14Generator.h"
-#    include "cmGlobalVisualStudio15Generator.h"
 #    include "cmGlobalVisualStudio9Generator.h"
+#    include "cmGlobalVisualStudioVersionedGenerator.h"
 #    include "cmVSSetupHelper.h"
 
 #    define CMAKE_HAVE_VS_GENERATORS
@@ -1545,8 +1545,9 @@ void cmake::CreateDefaultGlobalGenerator()
     "\\Setup\\VC;ProductDir", //
     ";InstallDir"             //
   };
-  cmVSSetupAPIHelper vsSetupAPIHelper;
-  if (vsSetupAPIHelper.IsVS2017Installed()) {
+  if (cmVSSetupAPIHelper(16).IsVSInstalled()) {
+    found = "Visual Studio 16 2019";
+  } else if (cmVSSetupAPIHelper(15).IsVSInstalled()) {
     found = "Visual Studio 15 2017";
   } else {
     for (VSVersionedGenerator const* g = cm::cbegin(vsGenerators);
@@ -1800,7 +1801,10 @@ void cmake::AddDefaultGenerators()
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
 #  if !defined(CMAKE_BOOT_MINGW)
-  this->Generators.push_back(cmGlobalVisualStudio15Generator::NewFactory());
+  this->Generators.push_back(
+    cmGlobalVisualStudioVersionedGenerator::NewFactory16());
+  this->Generators.push_back(
+    cmGlobalVisualStudioVersionedGenerator::NewFactory15());
   this->Generators.push_back(cmGlobalVisualStudio14Generator::NewFactory());
   this->Generators.push_back(cmGlobalVisualStudio12Generator::NewFactory());
   this->Generators.push_back(cmGlobalVisualStudio11Generator::NewFactory());