From 735adf2c94c1ee0cca710c6eb0bade2b84c461de Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Thu, 3 Apr 2014 19:40:06 +0200
Subject: [PATCH] Features: Add cxx_range_for.

---
 Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst  |  5 +++++
 Modules/Compiler/GNU-CXX-FeatureTests.cmake |  1 +
 Source/cmMakefile.cxx                       |  1 +
 Tests/CompileFeatures/cxx_range_for.cpp     | 10 ++++++++++
 4 files changed, 17 insertions(+)
 create mode 100644 Tests/CompileFeatures/cxx_range_for.cpp

diff --git a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
index 8924a00d9..b8af28faa 100644
--- a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
+++ b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
@@ -82,6 +82,11 @@ The features known to this version of CMake are:
 
   .. _N2928: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.htm
 
+``cxx_range_for``
+  Range-based for, as defined in N2930_.
+
+  .. _N2930: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2930.html
+
 ``cxx_static_assert``
   Static assert, as defined in N1720_.
 
diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
index 4539fd63d..c48fca8df 100644
--- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake
+++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
@@ -20,6 +20,7 @@ set(_cmake_feature_test_cxx_override "${GNU47_CXX11}")
 set(GNU46_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
 set(_cmake_feature_test_cxx_nullptr "${GNU46_CXX11}")
+set(_cmake_feature_test_cxx_range_for "${GNU46_CXX11}")
 # TODO: Should be supported by GNU 4.5
 set(GNU45_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_explicit_conversions "${GNU45_CXX11}")
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index c56627ff9..b1f6cd090 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -56,6 +56,7 @@
   F(cxx_nonstatic_member_init) \
   F(cxx_nullptr) \
   F(cxx_override) \
+  F(cxx_range_for) \
   F(cxx_static_assert) \
   F(cxx_strong_enums) \
   F(cxx_trailing_return_types) \
diff --git a/Tests/CompileFeatures/cxx_range_for.cpp b/Tests/CompileFeatures/cxx_range_for.cpp
new file mode 100644
index 000000000..892109e90
--- /dev/null
+++ b/Tests/CompileFeatures/cxx_range_for.cpp
@@ -0,0 +1,10 @@
+
+void someFunc()
+{
+  int accumulated = 0;
+  int numbers[] = { 1, 2, 5 };
+  for (int i : numbers)
+    {
+    accumulated += i;
+    }
+}