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diff --git a/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake b/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake
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+++ b/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake
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+# - MACRO_ENSURE_OUT_OF_SOURCE_BUILD(<errorMessage>)
+# MACRO_ENSURE_OUT_OF_SOURCE_BUILD(<errorMessage>)
+
+# Copyright (c) 2006, Alexander Neundorf, <neundorf@kde.org>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+macro (MACRO_ENSURE_OUT_OF_SOURCE_BUILD _errorMessage)
+
+ string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" _insource)
+ if (_insource)
+ message(SEND_ERROR "${_errorMessage}")
+ message(FATAL_ERROR "Remove the file CMakeCache.txt in ${CMAKE_SOURCE_DIR} first.")
+ endif (_insource)
+
+endmacro (MACRO_ENSURE_OUT_OF_SOURCE_BUILD)