1 files changed, 7 insertions, 0 deletions
diff --git a/Source/cmState.h b/Source/cmState.h
index e503cd2..d683068 100644
--- a/Source/cmState.h
+++ b/Source/cmState.h
@@ -93,6 +93,10 @@ public:
     };
 
   private:
+    friend bool operator==(const cmState::Snapshot& lhs,
+                           const cmState::Snapshot& rhs);
+    friend bool operator!=(const cmState::Snapshot& lhs,
+                           const cmState::Snapshot& rhs);
     friend class cmState;
     friend class Directory;
     friend struct StrictWeakOrder;
@@ -314,4 +318,7 @@ private:
   bool MSYSShell;
 };
 
+bool operator==(const cmState::Snapshot& lhs, const cmState::Snapshot& rhs);
+bool operator!=(const cmState::Snapshot& lhs, const cmState::Snapshot& rhs);
+
 #endif