1 files changed, 32 insertions, 41 deletions

diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index 7794df3..badce2e 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -3,6 +3,7 @@
 #include "cmGlobalVisualStudio10Generator.h"
 
 #include <algorithm>
+#include <utility>
 
 #include <cm/memory>
 
@@ -302,16 +303,16 @@ bool cmGlobalVisualStudio10Generator::SetGeneratorToolset(
     // If a specific minor version of the toolset was requested, verify that it
     // is compatible to the major version and that is exists on disk.
     // If not clear the value.
-    std::string version = this->GeneratorToolsetVersion;
+    std::string versionToolset = this->GeneratorToolsetVersion;
     cmsys::RegularExpression regex("[0-9][0-9]\\.[0-9][0-9]");
-    if (regex.find(version)) {
-      version = "v" + version.erase(2, 1);
+    if (regex.find(versionToolset)) {
+      versionToolset = "v" + versionToolset.erase(2, 1);
     } else {
       // Version not recognized. Clear it.
-      version.clear();
+      versionToolset.clear();
     }
 
-    if (!cmHasPrefix(version, this->GetPlatformToolsetString())) {
+    if (!cmHasPrefix(versionToolset, this->GetPlatformToolsetString())) {
       std::ostringstream e;
       /* clang-format off */
       e <<
@@ -329,15 +330,20 @@ bool cmGlobalVisualStudio10Generator::SetGeneratorToolset(
       this->GeneratorToolsetVersion.clear();
     }
 
-    bool const isDefaultToolset =
-      this->IsDefaultToolset(this->GeneratorToolsetVersion);
-    if (isDefaultToolset) {
-      // If the given version is the default toolset, remove the setting
-      this->GeneratorToolsetVersion.clear();
-    } else {
-      std::string const toolsetPath = this->GetAuxiliaryToolset();
-      if (!toolsetPath.empty() && !cmSystemTools::FileExists(toolsetPath)) {
-
+    std::string auxProps;
+    switch (this->FindAuxToolset(this->GeneratorToolsetVersion, auxProps)) {
+      case AuxToolset::None:
+        this->GeneratorToolsetVersionProps = {};
+        break;
+      case AuxToolset::Default:
+        // The given version is the default toolset.  Remove the setting.
+        this->GeneratorToolsetVersion.clear();
+        this->GeneratorToolsetVersionProps = {};
+        break;
+      case AuxToolset::PropsExist:
+        this->GeneratorToolsetVersionProps = std::move(auxProps);
+        break;
+      case AuxToolset::PropsMissing: {
         std::ostringstream e;
         /* clang-format off */
         e <<
@@ -347,22 +353,24 @@ bool cmGlobalVisualStudio10Generator::SetGeneratorToolset(
           "  " << this->GetPlatformToolsetString() << ",version=" <<
           this->GeneratorToolsetVersion << "\n"
           "does not seem to be installed at\n" <<
-          "  " << toolsetPath;
+          "  " << auxProps;
         ;
         /* clang-format on */
         mf->IssueMessage(MessageType::FATAL_ERROR, e.str());
 
         // Clear the configured tool-set
         this->GeneratorToolsetVersion.clear();
-      }
+        this->GeneratorToolsetVersionProps = {};
+      } break;
     }
   }
 
   if (const char* toolset = this->GetPlatformToolset()) {
     mf->AddDefinition("CMAKE_VS_PLATFORM_TOOLSET", toolset);
   }
-  if (const char* version = this->GetPlatformToolsetVersion()) {
-    mf->AddDefinition("CMAKE_VS_PLATFORM_TOOLSET_VERSION", version);
+  if (!this->GeneratorToolsetVersion.empty()) {
+    mf->AddDefinition("CMAKE_VS_PLATFORM_TOOLSET_VERSION",
+                      this->GeneratorToolsetVersion);
   }
   if (const char* hostArch = this->GetPlatformToolsetHostArchitecture()) {
     mf->AddDefinition("CMAKE_VS_PLATFORM_TOOLSET_HOST_ARCHITECTURE", hostArch);
@@ -719,23 +727,10 @@ std::string const& cmGlobalVisualStudio10Generator::GetPlatformToolsetString()
   return empty;
 }
 
-const char* cmGlobalVisualStudio10Generator::GetPlatformToolsetVersion() const
-{
-  std::string const& version = this->GetPlatformToolsetVersionString();
-  if (version.empty()) {
-    return nullptr;
-  }
-  return version.c_str();
-}
-
 std::string const&
-cmGlobalVisualStudio10Generator::GetPlatformToolsetVersionString() const
+cmGlobalVisualStudio10Generator::GetPlatformToolsetVersionProps() const
 {
-  if (!this->GeneratorToolsetVersion.empty()) {
-    return this->GeneratorToolsetVersion;
-  }
-  static std::string const empty;
-  return empty;
+  return this->GeneratorToolsetVersionProps;
 }
 
 const char*
@@ -792,15 +787,11 @@ cmGlobalVisualStudio10Generator::GetPlatformToolsetCudaCustomDirString() const
   return this->GeneratorToolsetCudaCustomDir;
 }
 
-bool cmGlobalVisualStudio10Generator::IsDefaultToolset(
-  const std::string&) const
-{
-  return true;
-}
-
-std::string cmGlobalVisualStudio10Generator::GetAuxiliaryToolset() const
+cmGlobalVisualStudio10Generator::AuxToolset
+cmGlobalVisualStudio10Generator::FindAuxToolset(std::string&,
+                                                std::string&) const
 {
-  return {};
+  return AuxToolset::None;
 }
 
 bool cmGlobalVisualStudio10Generator::FindMakeProgram(cmMakefile* mf)