diff --git a/Source/cmCPluginAPI.cxx b/Source/cmCPluginAPI.cxx
index 591a2cd81..7da334ef1 100644
--- a/Source/cmCPluginAPI.cxx
+++ b/Source/cmCPluginAPI.cxx
@@ -115,7 +115,9 @@ void CCONV cmAddCacheDefinition(void *arg, const char* name,
 const char* CCONV cmGetProjectName(void *arg)
 {
   cmMakefile *mf = static_cast<cmMakefile *>(arg);
-  return mf->GetProjectName();
+  static std::string name;
+  name = mf->GetProjectName();
+  return name.c_str();
 }
 
 const char* CCONV cmGetHomeDirectory(void *arg)
diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index be7896df1..bdd5b5acd 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -2112,18 +2112,19 @@ void cmGlobalGenerator::FillProjectMap()
   for(i = 0; i < this->LocalGenerators.size(); ++i)
     {
     // for each local generator add all projects
-    cmLocalGenerator *lg = this->LocalGenerators[i];
+    cmState::Snapshot snp = this->LocalGenerators[i]->GetStateSnapshot();
     std::string name;
     do
       {
-      if (name != lg->GetMakefile()->GetProjectName())
+      std::string snpProjName = snp.GetProjectName();
+      if (name != snpProjName)
         {
-        name = lg->GetMakefile()->GetProjectName();
+        name = snpProjName;
         this->ProjectMap[name].push_back(this->LocalGenerators[i]);
         }
-      lg = lg->GetParent();
+      snp = snp.GetBuildsystemDirectoryParent();
       }
-    while (lg);
+    while (snp.IsValid());
     }
 }
 
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 2296d5a33..dbf41cc82 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -1525,7 +1525,7 @@ void cmMakefile::InitializeFromParent(cmMakefile* parent)
                     parent->GetProperty("LINK_DIRECTORIES"));
 
   // the initial project name
-  this->ProjectName = parent->ProjectName;
+  this->SetProjectName(parent->GetProjectName());
 
   // Copy include regular expressions.
   this->ComplainFileRegularExpression = parent->ComplainFileRegularExpression;
@@ -2044,11 +2044,15 @@ void cmMakefile::RemoveCacheDefinition(const std::string& name)
   this->GetState()->RemoveCacheEntry(name);
 }
 
-void cmMakefile::SetProjectName(const char* p)
+void cmMakefile::SetProjectName(std::string const& p)
 {
-  this->ProjectName = p;
+  this->StateSnapshot.SetProjectName(p);
 }
 
+std::string cmMakefile::GetProjectName() const
+{
+  return this->StateSnapshot.GetProjectName();
+}
 
 void cmMakefile::AddGlobalLinkInformation(const std::string& name,
                                           cmTarget& target)
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 055170a62..81bb51002 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -274,15 +274,12 @@ public:
   /**
    * Specify the name of the project for this build.
    */
-  void SetProjectName(const char*);
+  void SetProjectName(std::string const& name);
 
   /**
    * Get the name of the project for this build.
    */
-  const char* GetProjectName() const
-    {
-      return this->ProjectName.c_str();
-    }
+  std::string GetProjectName() const;
 
   /** Get the configurations to be generated.  */
   std::string GetConfigurations(std::vector<std::string>& configs,
@@ -813,8 +810,6 @@ protected:
 
   mutable std::set<cmListFileContext> CMP0054ReportedIds;
 
-  std::string ProjectName;    // project name
-
   // libraries, classes, and executables
   mutable cmTargets Targets;
 #if defined(CMAKE_BUILD_WITH_CMAKE)
diff --git a/Source/cmProjectCommand.cxx b/Source/cmProjectCommand.cxx
index 46d7e0113..71231259c 100644
--- a/Source/cmProjectCommand.cxx
+++ b/Source/cmProjectCommand.cxx
@@ -20,7 +20,7 @@ bool cmProjectCommand
     this->SetError("PROJECT called with incorrect number of arguments");
     return false;
     }
-  this->Makefile->SetProjectName(args[0].c_str());
+  this->Makefile->SetProjectName(args[0]);
 
   std::string bindir = args[0];
   bindir += "_BINARY_DIR";
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index a40126508..b30c10b1a 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -75,6 +75,8 @@ struct cmState::BuildsystemDirectoryStateType
   std::vector<std::string> CompileOptions;
   std::vector<cmListFileBacktrace> CompileOptionsBacktraces;
 
+  std::string ProjectName;
+
   cmPropertyMap Properties;
 
   std::vector<cmState::Snapshot> Children;
@@ -1322,6 +1324,16 @@ cmState::Directory cmState::Snapshot::GetDirectory() const
   return Directory(this->Position->BuildSystemDirectory, *this);
 }
 
+void cmState::Snapshot::SetProjectName(const std::string& name)
+{
+  this->Position->BuildSystemDirectory->ProjectName = name;
+}
+
+std::string cmState::Snapshot::GetProjectName() const
+{
+  return this->Position->BuildSystemDirectory->ProjectName;
+}
+
 cmState::Directory::Directory(
     cmLinkedTree<BuildsystemDirectoryStateType>::iterator iter,
     const cmState::Snapshot& snapshot)
diff --git a/Source/cmState.h b/Source/cmState.h
index 3099384f0..99e537c07 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -88,6 +88,9 @@ public:
 
     Directory GetDirectory() const;
 
+    void SetProjectName(std::string const& name);
+    std::string GetProjectName() const;
+
     struct StrictWeakOrder
     {
       bool operator()(const cmState::Snapshot& lhs,