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+CMP0009
+-------
+
+FILE GLOB_RECURSE calls should not follow symlinks by default.
+
+In CMake 2.6.1 and below, FILE GLOB_RECURSE calls would follow through
+symlinks, sometimes coming up with unexpectedly large result sets
+because of symlinks to top level directories that contain hundreds of
+thousands of files.
+
+This policy determines whether or not to follow symlinks encountered
+during a FILE GLOB_RECURSE call. The OLD behavior for this policy is
+to follow the symlinks. The NEW behavior for this policy is not to
+follow the symlinks by default, but only if FOLLOW_SYMLINKS is given
+as an additional argument to the FILE command.
+
+This policy was introduced in CMake version 2.6.2. CMake version
+|release| warns when the policy is not set and uses OLD behavior. Use
+the cmake_policy command to set it to OLD or NEW explicitly.