1 files changed, 9 insertions, 0 deletions
diff --git a/Source/cmGlobalGenerator.h b/Source/cmGlobalGenerator.h
index 519158f..ae9a46d 100644
--- a/Source/cmGlobalGenerator.h
+++ b/Source/cmGlobalGenerator.h
@@ -245,6 +245,10 @@ public:
   void FileReplacedDuringGenerate(const std::string& filename);
   void GetFilesReplacedDuringGenerate(std::vector<std::string>& filenames);
 
+  void AddRuleHash(const std::vector<std::string>& outputs,
+                   const std::vector<std::string>& depends,
+                   const std::vector<std::string>& commands);
+
 protected:
   // for a project collect all its targets by following depend
   // information, and also collect all the targets
@@ -313,6 +317,11 @@ private:
   // this is used to improve performance
   std::map<cmStdString,cmTarget *> TotalTargets;
 
+  // Record hashes for rules and outputs.
+  struct RuleHash { char Data[32]; };
+  std::map<cmStdString, RuleHash> RuleHashes;
+  void CheckRuleHashes();
+
   cmExternalMakefileProjectGenerator* ExtraGenerator;
 
   // track files replaced during a Generate