Features: Add cxx_defaulted_move_initializers.

Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst

@@ -62,6 +62,11 @@ The features known to this version of CMake are:
 
   .. _N2346: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm
 
+``cxx_defaulted_move_initializers``
+  Defaulted move initializers, as defined in N3053_.
+
+  .. _N3053: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3053.html
+
 ``cxx_delegating_constructors``
   Delegating constructors, as defined in N1986_.
 

Modules/Compiler/GNU-CXX-FeatureTests.cmake

@@ -30,6 +30,7 @@ set(_cmake_feature_test_cxx_user_literals "${GNU47_CXX11}")
 # TODO: Should be supported by GNU 4.6
 set(GNU46_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
+set(_cmake_feature_test_cxx_defaulted_move_initializers "${GNU46_CXX11}")
 set(_cmake_feature_test_cxx_enum_forward_declarations "${GNU46_CXX11}")
 set(_cmake_feature_test_cxx_nullptr "${GNU46_CXX11}")
 set(_cmake_feature_test_cxx_range_for "${GNU46_CXX11}")

Source/cmMakefile.cxx

@@ -52,6 +52,7 @@
   F(cxx_decltype_incomplete_return_types) \
   F(cxx_default_function_template_args) \
   F(cxx_defaulted_functions) \
+  F(cxx_defaulted_move_initializers) \
   F(cxx_delegating_constructors) \
   F(cxx_deleted_functions) \
   F(cxx_enum_forward_declarations) \

Tests/CompileFeatures/cxx_defaulted_move_initializers.cpp

@@ -0,0 +1,7 @@
+
+struct A
+{
+  A() = default;
+  A& operator=(A&&) = default;
+  A(A&&) = default;
+};