Do not treat DEFINITIONS as a built-in directory property

Add policy CMP0059 to cover this change.  The property has been
deprecated since CMake 2.4 anyway.

This will help clean up cmMakefile -- the DefineFlagsOrig member should
not need to exist.

1 files changed, 17 insertions, 0 deletions

diff --git a/Help/policy/CMP0059.rst b/Help/policy/CMP0059.rst
new file mode 100644
index 0000000..e40f450
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+++ b/Help/policy/CMP0059.rst
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+CMP0059
+-------
+
+Don't treat ``DEFINITIONS`` as a built-in directory property.
+
+CMake 3.3 and above no longer make a list of definitions available through
+the :prop_dir:`DEFINITIONS` directory property.  The
+:prop_dir:`COMPILE_DEFINITIONS` directory property may be used instead.
+
+The ``OLD`` behavior for this policy is to provide the list of flags given
+so far to the :command:`add_definitions` command.  The ``NEW`` behavior is
+to behave as a normal user-defined directory property.
+
+This policy was introduced in CMake version 3.3.
+CMake version |release| warns when the policy is not set and uses
+``OLD`` behavior.  Use the :command:`cmake_policy` command to set
+it to ``OLD`` or ``NEW`` explicitly.