Features: Add cxx_deleted_functions.

Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst

@@ -37,6 +37,11 @@ The features known to this version of CMake are:
 
   .. _N1986: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1986.pdf
 
+``cxx_deleted_functions``
+  Deleted functions, as defined in  N2346_.
+
+  .. _N2346: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm
+
 ``cxx_final``
   Override control ``final`` keyword, as defined in N2928_.
 

Modules/Compiler/GNU-CXX-FeatureTests.cmake

@@ -19,6 +19,7 @@ set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
 set(GNU44_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_defaulted_functions "${GNU44_CXX11}")
+set(_cmake_feature_test_cxx_deleted_functions "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_strong_enums "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_trailing_return_types "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_variadic_templates "${GNU44_CXX11}")

Source/cmMakefile.cxx

@@ -47,6 +47,7 @@
   F(cxx_decltype) \
   F(cxx_defaulted_functions) \
   F(cxx_delegating_constructors) \
+  F(cxx_deleted_functions) \
   F(cxx_final) \
   F(cxx_override) \
   F(cxx_static_assert) \

Tests/CompileFeatures/cxx_deleted_functions.cpp

@@ -0,0 +1,6 @@
+
+struct A
+{
+  A(const A&) = delete;
+  A& operator=(const A&) = delete;
+};