From 8354413463fd4b13185388f57dc1b2f5cfd8298d Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Thu, 13 Jan 2011 17:58:04 -0500
Subject: [PATCH] Add method to unwatch a manual variable

---
 Source/cmake.cxx | 8 ++++++++
 Source/cmake.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 548e59a09..0d1c4ef2f 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -4309,6 +4309,14 @@ void cmake::WatchUnusedCli(const char* var)
 #endif
 }
 
+void cmake::UnwatchUnusedCli(const char* var)
+{
+#ifdef CMAKE_BUILD_WITH_CMAKE
+  this->VariableWatch->RemoveWatch(var, cmWarnUnusedCliWarning);
+  this->UsedCliVariables[var] = true;
+#endif
+}
+
 void cmake::RunCheckForUnusedVariables(const std::string& reason) const
 {
 #ifdef CMAKE_BUILD_WITH_CMAKE
diff --git a/Source/cmake.h b/Source/cmake.h
index 4d348bb8a..1bb42d32c 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -366,6 +366,7 @@ class cmake
             const std::vector<std::string>& nativeOptions,
             bool clean);
 
+  void UnwatchUnusedCli(const char* var);
   void WatchUnusedCli(const char* var);
   void RunCheckForUnusedVariables(const std::string& reason) const;
 protected: