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

1 files changed, 151 insertions, 0 deletions

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);
+}