Features: Add cxx_rvalue_references.

Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst

@@ -97,6 +97,11 @@ The features known to this version of CMake are:
 
   .. _N2439: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2439.htm
 
+``cxx_rvalue_references``
+  R-value references, as defined in N2118_.
+
+  .. _N2118: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html
+
 ``cxx_static_assert``
   Static assert, as defined in N1720_.
 

Modules/Compiler/GNU-CXX-FeatureTests.cmake

@@ -47,5 +47,6 @@ set(_cmake_feature_test_cxx_variadic_templates "${GNU44_CXX11}")
 # TODO: Should be supported by GNU 4.3
 set(GNU43_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_decltype "${GNU43_CXX11}")
+set(_cmake_feature_test_cxx_rvalue_references "${GNU43_CXX11}")
 set(_cmake_feature_test_cxx_static_assert "${GNU43_CXX11}")
 set(_oldestSupported)

Source/cmMakefile.cxx

@@ -59,6 +59,7 @@
   F(cxx_range_for) \
   F(cxx_raw_string_literals) \
   F(cxx_reference_qualified_functions) \
+  F(cxx_rvalue_references) \
   F(cxx_static_assert) \
   F(cxx_strong_enums) \
   F(cxx_trailing_return_types) \

Tests/CompileFeatures/cxx_rvalue_references.cpp

@@ -0,0 +1,5 @@
+
+void someFunc(int&&)
+{
+
+}