Features: Add cxx_uniform_initialization.

Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst

@@ -152,6 +152,11 @@ The features known to this version of CMake are:
 
   .. _N2442: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm
 
+``cxx_uniform_initialization``
+  Uniform intialization, as defined in N2640_.
+
+  .. _N2640: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2640.pdf
+
 ``cxx_unrestricted_unions``
   Unrestricted unions, as defined in N2544_.
 

Modules/Compiler/GNU-CXX-FeatureTests.cmake

@@ -44,6 +44,7 @@ set(_cmake_feature_test_cxx_generalized_initializers "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_strong_enums "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_trailing_return_types "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_unicode_literals "${GNU44_CXX11}")
+set(_cmake_feature_test_cxx_uniform_initialization "${GNU44_CXX11}")
 set(_cmake_feature_test_cxx_variadic_templates "${GNU44_CXX11}")
 # TODO: If features are ever recorded for GNU 4.3, there should possibly
 # be a new feature added like cxx_variadic_template_template_parameters,

Source/cmMakefile.cxx

@@ -70,6 +70,7 @@
   F(cxx_strong_enums) \
   F(cxx_trailing_return_types) \
   F(cxx_unicode_literals) \
+  F(cxx_uniform_initialization) \
   F(cxx_unrestricted_unions) \
   F(cxx_user_literals) \
   F(cxx_variadic_templates)

Tests/CompileFeatures/cxx_uniform_initialization.cpp

@@ -0,0 +1,9 @@
+struct A {};
+struct B {
+  B(A) {}
+};
+
+void Func()
+{
+  B b{A{}};
+}