From bd7dd6d414303e8fc4da786107f4292768d87638 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Fri, 24 Aug 2018 07:31:01 -0400
Subject: cmake: Declare VariableWatch member only when used

---
 Source/cmake.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Source/cmake.h b/Source/cmake.h
index 86e06df..4b4c67c 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -297,8 +297,10 @@ public:
   ///! this is called by generators to update the progress
   void UpdateProgress(const char* msg, float prog);
 
+#if defined(CMAKE_BUILD_WITH_CMAKE)
   ///! Get the variable watch object
   cmVariableWatch* GetVariableWatch() { return this->VariableWatch; }
+#endif
 
   void GetGeneratorDocumentation(std::vector<cmDocumentationEntry>&);
 
@@ -493,8 +495,6 @@ protected:
 
   void GenerateGraphViz(const char* fileName) const;
 
-  cmVariableWatch* VariableWatch;
-
 private:
   ProgressCallbackType ProgressCallback;
   void* ProgressCallbackClientData;
@@ -525,6 +525,10 @@ private:
   std::string GraphVizFile;
   InstalledFilesMap InstalledFiles;
 
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+  cmVariableWatch* VariableWatch;
+#endif
+
   cmState* State;
   cmStateSnapshot CurrentSnapshot;
   cmMessenger* Messenger;
-- 
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