VS15: Add Visual Studio 15 generator

Call the generator "Visual Studio 15" without any year because the
preview version of VS 15 does not provide a year in the product name.

Copy cmGlobalVisualStudio14Generator to cmGlobalVisualStudio15Generator
and update version numbers accordingly.  Add the VS15 enumeration value.
Note that we do not need to add a MSVC15 variable or v150 toolset
because Visual Studio 15 comes with an updated version of the v140
toolset and remains ABI-compatible.

Teach tests VSExternalInclude, RunCMake.GeneratorPlatform, and
RunCMake.GeneratorToolset to treat VS 15 as they do VS 10-14.

Closes: #16143

15 files changed, 259 insertions, 8 deletions

diff --git a/Help/generator/Visual Studio 15.rst b/Help/generator/Visual Studio 15.rst
new file mode 100644
index 0000000..2b9e33a
--- /dev/null
+++ b/Help/generator/Visual Studio 15.rst
@@ -0,0 +1,16 @@
+Visual Studio 15
+----------------
+
+Generates Visual Studio 15 project files.
+
+The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set
+to specify a target platform name.
+
+For compatibility with CMake versions prior to 3.1, one may specify
+a target platform name optionally at the end of this generator name:
+
+``Visual Studio 15 Win64``
+  Specify target platform ``x64``.
+
+``Visual Studio 15 ARM``
+  Specify target platform ``ARM``.
diff --git a/Help/manual/cmake-generators.7.rst b/Help/manual/cmake-generators.7.rst
index cde8de8..3df3a81 100644
--- a/Help/manual/cmake-generators.7.rst
+++ b/Help/manual/cmake-generators.7.rst
@@ -82,6 +82,7 @@ Visual Studio Generators
    /generator/Visual Studio 11 2012
    /generator/Visual Studio 12 2013
    /generator/Visual Studio 14 2015
+   /generator/Visual Studio 15
 
 Other Generators
 ^^^^^^^^^^^^^^^^
diff --git a/Help/release/dev/vs-15-generator.rst b/Help/release/dev/vs-15-generator.rst
new file mode 100644
index 0000000..be40cbc
--- /dev/null
+++ b/Help/release/dev/vs-15-generator.rst
@@ -0,0 +1,4 @@
+vs-15-generator
+---------------
+
+* The :generator:`Visual Studio 15` generator was added.
diff --git a/Help/variable/MSVC_VERSION.rst b/Help/variable/MSVC_VERSION.rst
index ef3b0b5..e2aff3c9 100644
--- a/Help/variable/MSVC_VERSION.rst
+++ b/Help/variable/MSVC_VERSION.rst
@@ -13,4 +13,4 @@ Known version numbers are::
   1600 = VS 10.0
   1700 = VS 11.0
   1800 = VS 12.0
-  1900 = VS 14.0
+  1900 = VS 14.0, 15.0
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 6c3ebf5..f5c2e52 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -492,6 +492,8 @@ if (WIN32)
       cmGlobalVisualStudio12Generator.cxx
       cmGlobalVisualStudio14Generator.h
       cmGlobalVisualStudio14Generator.cxx
+      cmGlobalVisualStudio15Generator.h
+      cmGlobalVisualStudio15Generator.cxx
       cmGlobalVisualStudioGenerator.cxx
       cmGlobalVisualStudioGenerator.h
       cmIDEFlagTable.h
diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index ab87d67..8bb43ee 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -365,6 +365,20 @@ std::string cmGlobalVisualStudio10Generator::FindMSBuildCommand()
     }
   }
 
+  // Search where VS15Preview places it.
+  mskey = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VS7;";
+  mskey += this->GetIDEVersion();
+  if (cmSystemTools::ReadRegistryValue(mskey.c_str(), msbuild,
+                                       cmSystemTools::KeyWOW64_32)) {
+    cmSystemTools::ConvertToUnixSlashes(msbuild);
+    msbuild += "/MSBuild/";
+    msbuild += this->GetIDEVersion();
+    msbuild += "/Bin/MSBuild.exe";
+    if (cmSystemTools::FileExists(msbuild, true)) {
+      return msbuild;
+    }
+  }
+
   msbuild = "MSBuild.exe";
   return msbuild;
 }
diff --git a/Source/cmGlobalVisualStudio15Generator.cxx b/Source/cmGlobalVisualStudio15Generator.cxx
new file mode 100644
index 0000000..98076c3
--- /dev/null
+++ b/Source/cmGlobalVisualStudio15Generator.cxx
@@ -0,0 +1,151 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2016 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#include "cmGlobalVisualStudio15Generator.h"
+
+#include "cmAlgorithms.h"
+#include "cmLocalVisualStudio10Generator.h"
+#include "cmMakefile.h"
+
+static const char vs15generatorName[] = "Visual Studio 15";
+
+// Map generator name without year to name with year.
+static const char* cmVS15GenName(const std::string& name, std::string& genName)
+{
+  if (strncmp(name.c_str(), vs15generatorName,
+              sizeof(vs15generatorName) - 1) != 0) {
+    return 0;
+  }
+  const char* p = name.c_str() + sizeof(vs15generatorName) - 1;
+  genName = std::string(vs15generatorName) + p;
+  return p;
+}
+
+class cmGlobalVisualStudio15Generator::Factory
+  : public cmGlobalGeneratorFactory
+{
+public:
+  virtual cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
+                                                   cmake* cm) const
+  {
+    std::string genName;
+    const char* p = cmVS15GenName(name, genName);
+    if (!p) {
+      return 0;
+    }
+    if (!*p) {
+      return new cmGlobalVisualStudio15Generator(cm, genName, "");
+    }
+    if (*p++ != ' ') {
+      return 0;
+    }
+    if (strcmp(p, "Win64") == 0) {
+      return new cmGlobalVisualStudio15Generator(cm, genName, "x64");
+    }
+    if (strcmp(p, "ARM") == 0) {
+      return new cmGlobalVisualStudio15Generator(cm, genName, "ARM");
+    }
+    return 0;
+  }
+
+  virtual void GetDocumentation(cmDocumentationEntry& entry) const
+  {
+    entry.Name = std::string(vs15generatorName) + " [arch]";
+    entry.Brief = "Generates Visual Studio 15 project files.  "
+                  "Optional [arch] can be \"Win64\" or \"ARM\".";
+  }
+
+  virtual void GetGenerators(std::vector<std::string>& names) const
+  {
+    names.push_back(vs15generatorName);
+    names.push_back(vs15generatorName + std::string(" ARM"));
+    names.push_back(vs15generatorName + std::string(" Win64"));
+  }
+
+  bool SupportsToolset() const CM_OVERRIDE { return true; }
+  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+};
+
+cmGlobalGeneratorFactory* cmGlobalVisualStudio15Generator::NewFactory()
+{
+  return new Factory;
+}
+
+cmGlobalVisualStudio15Generator::cmGlobalVisualStudio15Generator(
+  cmake* cm, const std::string& name, const std::string& platformName)
+  : cmGlobalVisualStudio14Generator(cm, name, platformName)
+{
+  std::string vc15Express;
+  this->ExpressEdition = cmSystemTools::ReadRegistryValue(
+    "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VCExpress\\15.0\\Setup\\VC;"
+    "ProductDir",
+    vc15Express, cmSystemTools::KeyWOW64_32);
+  this->DefaultPlatformToolset = "v140";
+  this->Version = VS15;
+}
+
+bool cmGlobalVisualStudio15Generator::MatchesGeneratorName(
+  const std::string& name) const
+{
+  std::string genName;
+  if (cmVS15GenName(name, genName)) {
+    return genName == this->GetName();
+  }
+  return false;
+}
+
+void cmGlobalVisualStudio15Generator::WriteSLNHeader(std::ostream& fout)
+{
+  // Visual Studio 15 writes .sln format 12.00
+  fout << "Microsoft Visual Studio Solution File, Format Version 12.00\n";
+  if (this->ExpressEdition) {
+    fout << "# Visual Studio Express 15 for Windows Desktop\n";
+  } else {
+    fout << "# Visual Studio 15\n";
+  }
+}
+
+bool cmGlobalVisualStudio15Generator::SelectWindowsStoreToolset(
+  std::string& toolset) const
+{
+  if (cmHasLiteralPrefix(this->SystemVersion, "10.0")) {
+    if (this->IsWindowsStoreToolsetInstalled() &&
+        this->IsWindowsDesktopToolsetInstalled()) {
+      toolset = "v140"; // VS 15 uses v140 toolset
+      return true;
+    } else {
+      return false;
+    }
+  }
+  return this->cmGlobalVisualStudio14Generator::SelectWindowsStoreToolset(
+    toolset);
+}
+
+bool cmGlobalVisualStudio15Generator::IsWindowsDesktopToolsetInstalled() const
+{
+  const char desktop10Key[] = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\"
+                              "VisualStudio\\15.0\\VC\\Runtimes";
+
+  std::vector<std::string> vc15;
+  return cmSystemTools::GetRegistrySubKeys(desktop10Key, vc15,
+                                           cmSystemTools::KeyWOW64_32);
+}
+
+bool cmGlobalVisualStudio15Generator::IsWindowsStoreToolsetInstalled() const
+{
+  const char universal10Key[] =
+    "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\"
+    "VisualStudio\\15.0\\Setup\\Build Tools for Windows 10;SrcPath";
+
+  std::string win10SDK;
+  return cmSystemTools::ReadRegistryValue(universal10Key, win10SDK,
+                                          cmSystemTools::KeyWOW64_32);
+}
diff --git a/Source/cmGlobalVisualStudio15Generator.h b/Source/cmGlobalVisualStudio15Generator.h
new file mode 100644
index 0000000..f673883
--- /dev/null
+++ b/Source/cmGlobalVisualStudio15Generator.h
@@ -0,0 +1,46 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2016 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmGlobalVisualStudio15Generator_h
+#define cmGlobalVisualStudio15Generator_h
+
+#include "cmGlobalVisualStudio14Generator.h"
+
+/** \class cmGlobalVisualStudio15Generator  */
+class cmGlobalVisualStudio15Generator : public cmGlobalVisualStudio14Generator
+{
+public:
+  cmGlobalVisualStudio15Generator(cmake* cm, const std::string& name,
+                                  const std::string& platformName);
+  static cmGlobalGeneratorFactory* NewFactory();
+
+  virtual bool MatchesGeneratorName(const std::string& name) const;
+
+  virtual void WriteSLNHeader(std::ostream& fout);
+
+  virtual const char* GetToolsVersion() { return "15.0"; }
+protected:
+  virtual bool SelectWindowsStoreToolset(std::string& toolset) const;
+
+  virtual const char* GetIDEVersion() { return "15.0"; }
+
+  // Used to verify that the Desktop toolset for the current generator is
+  // installed on the machine.
+  virtual bool IsWindowsDesktopToolsetInstalled() const;
+
+  // These aren't virtual because we need to check if the selected version
+  // of the toolset is installed
+  bool IsWindowsStoreToolsetInstalled() const;
+
+private:
+  class Factory;
+};
+#endif
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index 8d3964f..0dc4497 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -163,6 +163,18 @@ std::string cmGlobalVisualStudio7Generator::FindDevEnvCommand()
     }
   }
 
+  // Search where VS15Preview places it.
+  vskey = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\SxS\\VS7;";
+  vskey += this->GetIDEVersion();
+  if (cmSystemTools::ReadRegistryValue(vskey.c_str(), vscmd,
+                                       cmSystemTools::KeyWOW64_32)) {
+    cmSystemTools::ConvertToUnixSlashes(vscmd);
+    vscmd += "/Common7/IDE/devenv.com";
+    if (cmSystemTools::FileExists(vscmd, true)) {
+      return vscmd;
+    }
+  }
+
   vscmd = "devenv.com";
   return vscmd;
 }
diff --git a/Source/cmGlobalVisualStudioGenerator.h b/Source/cmGlobalVisualStudioGenerator.h
index 1d456ff..3312ed6 100644
--- a/Source/cmGlobalVisualStudioGenerator.h
+++ b/Source/cmGlobalVisualStudioGenerator.h
@@ -34,7 +34,8 @@ public:
     VS11 = 110,
     VS12 = 120,
     /* VS13 = 130 was skipped */
-    VS14 = 140
+    VS14 = 140,
+    VS15 = 150
   };
 
   cmGlobalVisualStudioGenerator(cmake* cm);
diff --git a/Source/cmVisualStudioGeneratorOptions.cxx b/Source/cmVisualStudioGeneratorOptions.cxx
index 3b31d7b..9badda6 100644
--- a/Source/cmVisualStudioGeneratorOptions.cxx
+++ b/Source/cmVisualStudioGeneratorOptions.cxx
@@ -96,6 +96,7 @@ void cmVisualStudioGeneratorOptions::FixExceptionHandlingDefault()
     case cmGlobalVisualStudioGenerator::VS11:
     case cmGlobalVisualStudioGenerator::VS12:
     case cmGlobalVisualStudioGenerator::VS14:
+    case cmGlobalVisualStudioGenerator::VS15:
       // 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 25f9e3a..d6bea3d 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -66,6 +66,7 @@
 #include "cmGlobalVisualStudio11Generator.h"
 #include "cmGlobalVisualStudio12Generator.h"
 #include "cmGlobalVisualStudio14Generator.h"
+#include "cmGlobalVisualStudio15Generator.h"
 #include "cmGlobalVisualStudio71Generator.h"
 #include "cmGlobalVisualStudio8Generator.h"
 #include "cmGlobalVisualStudio9Generator.h"
@@ -1317,6 +1318,7 @@ int cmake::ActualConfigure()
         { "11.0", "Visual Studio 11 2012" },
         { "12.0", "Visual Studio 12 2013" },
         { "14.0", "Visual Studio 14 2015" },
+        { "15.0", "Visual Studio 15" },
         { 0, 0 }
       };
       for (int i = 0; version[i].MSVersion != 0; i++) {
@@ -1634,6 +1636,7 @@ void cmake::AddDefaultGenerators()
 {
 #if defined(_WIN32) && !defined(__CYGWIN__)
 #if !defined(CMAKE_BOOT_MINGW)
+  this->Generators.push_back(cmGlobalVisualStudio15Generator::NewFactory());
   this->Generators.push_back(cmGlobalVisualStudio14Generator::NewFactory());
   this->Generators.push_back(cmGlobalVisualStudio12Generator::NewFactory());
   this->Generators.push_back(cmGlobalVisualStudio11Generator::NewFactory());
diff --git a/Tests/RunCMake/GeneratorPlatform/RunCMakeTest.cmake b/Tests/RunCMake/GeneratorPlatform/RunCMakeTest.cmake
index 4d0a0a1..27250cb 100644
--- a/Tests/RunCMake/GeneratorPlatform/RunCMakeTest.cmake
+++ b/Tests/RunCMake/GeneratorPlatform/RunCMakeTest.cmake
@@ -3,7 +3,7 @@ include(RunCMake)
 set(RunCMake_GENERATOR_PLATFORM "")
 run_cmake(NoPlatform)
 
-if("${RunCMake_GENERATOR}" MATCHES "^Visual Studio ([89]|1[0124])( 20[0-9][0-9])?$")
+if("${RunCMake_GENERATOR}" MATCHES "^Visual Studio ([89]|1[01245])( 20[0-9][0-9])?$")
   set(RunCMake_GENERATOR_PLATFORM "x64")
   run_cmake(x64Platform)
 else()
@@ -17,7 +17,7 @@ set(RunCMake_TEST_OPTIONS -A "Extra Platform")
 run_cmake(TwoPlatforms)
 unset(RunCMake_TEST_OPTIONS)
 
-if("${RunCMake_GENERATOR}" MATCHES "^Visual Studio ([89]|1[0124])( 20[0-9][0-9])?$")
+if("${RunCMake_GENERATOR}" MATCHES "^Visual Studio ([89]|1[01245])( 20[0-9][0-9])?$")
   set(RunCMake_TEST_OPTIONS -DCMAKE_TOOLCHAIN_FILE=${RunCMake_SOURCE_DIR}/TestPlatform-toolchain.cmake)
   run_cmake(TestPlatformToolchain)
   unset(RunCMake_TEST_OPTIONS)
diff --git a/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake b/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
index 6220657..283a2a0 100644
--- a/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
+++ b/Tests/RunCMake/GeneratorToolset/RunCMakeTest.cmake
@@ -3,7 +3,7 @@ include(RunCMake)
 set(RunCMake_GENERATOR_TOOLSET "")
 run_cmake(NoToolset)
 
-if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[0124]|Xcode" AND NOT XCODE_BELOW_3)
+if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[01245]|Xcode" AND NOT XCODE_BELOW_3)
   set(RunCMake_GENERATOR_TOOLSET "Test Toolset")
   run_cmake(TestToolset)
 else()
@@ -17,7 +17,7 @@ set(RunCMake_TEST_OPTIONS -T "Extra Toolset")
 run_cmake(TwoToolsets)
 unset(RunCMake_TEST_OPTIONS)
 
-if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[0124]|Xcode" AND NOT XCODE_BELOW_3)
+if("${RunCMake_GENERATOR}" MATCHES "Visual Studio 1[01245]|Xcode" AND NOT XCODE_BELOW_3)
   set(RunCMake_TEST_OPTIONS -DCMAKE_TOOLCHAIN_FILE=${RunCMake_SOURCE_DIR}/TestToolset-toolchain.cmake)
   run_cmake(TestToolsetToolchain)
   unset(RunCMake_TEST_OPTIONS)
diff --git a/Tests/VSExternalInclude/CMakeLists.txt b/Tests/VSExternalInclude/CMakeLists.txt
index 20301c2..7465243 100644
--- a/Tests/VSExternalInclude/CMakeLists.txt
+++ b/Tests/VSExternalInclude/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required (VERSION 2.6)
 project(VSExternalInclude)
 
-if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[0124]")
+if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[01245]")
   set(PROJECT_EXT vcxproj)
 else()
   set(PROJECT_EXT vcproj)
@@ -55,7 +55,7 @@ add_dependencies(VSExternalInclude lib2)
 # and the sln file can no longer be the only source
 # of that depend.  So, for VS 10 make the executable
 # depend on lib1 and lib2
-if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[0124]")
+if(${CMAKE_GENERATOR} MATCHES "Visual Studio 1[01245]")
   add_dependencies(VSExternalInclude lib1)
 endif()