From ff80c3b4201918c2f30241972d3553a99571eed8 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Fri, 4 Apr 2014 14:10:17 +0200
Subject: Features: Add cxx_attributes.

---
 Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst  | 5 +++++
 Modules/Compiler/GNU-CXX-FeatureTests.cmake | 1 +
 Source/cmMakefile.cxx                       | 1 +
 Tests/CompileFeatures/cxx_attributes.cpp    | 2 ++
 4 files changed, 9 insertions(+)
 create mode 100644 Tests/CompileFeatures/cxx_attributes.cpp

diff --git a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
index 7e10853..05fc1bd 100644
--- a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
+++ b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
@@ -27,6 +27,11 @@ The features known to this version of CMake are:
 
   .. _N2341: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf
 
+``cxx_attributes``
+  Generic attributes, as defined in N2761_.
+
+  .. _N2761: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2761.pdf
+
 ``cxx_auto_type``
   Automatic type deduction, as defined in N1984_.
 
diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
index 26b7ff6..be3c27e 100644
--- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake
+++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
@@ -8,6 +8,7 @@ set(_cmake_feature_test_cxx_reference_qualified_functions
 set(GNU48_CXX11 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 408 && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_alignas "${GNU48_CXX11}")
 set(_cmake_feature_test_cxx_alignof "${GNU48_CXX11}")
+set(_cmake_feature_test_cxx_attributes "${GNU48_CXX11}")
 set(_cmake_feature_test_cxx_inheriting_constructors "${GNU48_CXX11}")
 # TODO: Should be supported by GNU 4.7
 set(GNU47_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 2b76d45..63c00cc 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -45,6 +45,7 @@
   F(cxx_alias_templates) \
   F(cxx_alignas) \
   F(cxx_alignof) \
+  F(cxx_attributes) \
   F(cxx_auto_type) \
   F(cxx_constexpr) \
   F(cxx_decltype) \
diff --git a/Tests/CompileFeatures/cxx_attributes.cpp b/Tests/CompileFeatures/cxx_attributes.cpp
new file mode 100644
index 0000000..a3c89ea
--- /dev/null
+++ b/Tests/CompileFeatures/cxx_attributes.cpp
@@ -0,0 +1,2 @@
+
+void unusedFunc [[noreturn]] () { throw 1; }
-- 
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