Squashed 'cmake/' content from commit 2d25566

git-subtree-dir: cmake
git-subtree-split: 2d25566a1c5162ce3fd6bfc268d5665de182af89

WarningDev.cmake

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+# - Print a developer warning, using author_warning if we have cmake 2.8
+#
+#  warning_dev("your desired message")
+#
+# Original Author:
+# 2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+#          Copyright Iowa State University 2009-2010
+# Distributed under the Boost Software License, Version 1.0.
+#    (See accompanying file LICENSE_1_0.txt or copy at
+#          http://www.boost.org/LICENSE_1_0.txt)
+
+function(warning_dev _yourmsg)
+	if("1.${CMAKE_VERSION}" VERSION_LESS "1.2.8.0")
+		# CMake version <2.8.0
+		message(STATUS
+			"The following is a developer warning - end users may ignore it")
+		message(STATUS "Dev Warning: ${_yourmsg}")
+	else()
+		message(AUTHOR_WARNING "${_yourmsg}")
+	endif()
+endfunction()