From 15cdf6f51dde9a394ffc7a398e201e59cc959111 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Thu, 3 Apr 2014 19:23:40 +0200
Subject: Features: Add cxx_lambdas.

---
 Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst  | 5 +++++
 Modules/Compiler/GNU-CXX-FeatureTests.cmake | 1 +
 Source/cmMakefile.cxx                       | 1 +
 Tests/CompileFeatures/cxx_lambdas.cpp       | 5 +++++
 4 files changed, 12 insertions(+)
 create mode 100644 Tests/CompileFeatures/cxx_lambdas.cpp

diff --git a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
index 41820e0..9441e57 100644
--- a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
+++ b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
@@ -57,6 +57,11 @@ The features known to this version of CMake are:
 
   .. _N2540: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2540.htm
 
+``cxx_lambdas``
+  Lambda functions, as defined in N2927_.
+
+  .. _N2927: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2927.pdf
+
 ``cxx_override``
   Override control ``override`` keyword, as defined in N2928_.
 
diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
index 6844e28..f182cea 100644
--- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake
+++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
@@ -20,6 +20,7 @@ set(_cmake_feature_test_cxx_constexpr "${GNU46_CXX11}")
 # TODO: Should be supported by GNU 4.5
 set(GNU45_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_explicit_conversions "${GNU45_CXX11}")
+set(_cmake_feature_test_cxx_lambdas "${GNU45_CXX11}")
 # TODO: Should be supported by GNU 4.4
 set(GNU44_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}")
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 25a6fee..9352ca5 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -51,6 +51,7 @@
   F(cxx_explicit_conversions) \
   F(cxx_final) \
   F(cxx_inheriting_constructors) \
+  F(cxx_lambdas) \
   F(cxx_override) \
   F(cxx_static_assert) \
   F(cxx_strong_enums) \
diff --git a/Tests/CompileFeatures/cxx_lambdas.cpp b/Tests/CompileFeatures/cxx_lambdas.cpp
new file mode 100644
index 0000000..eecaa23
--- /dev/null
+++ b/Tests/CompileFeatures/cxx_lambdas.cpp
@@ -0,0 +1,5 @@
+
+void someFunc()
+{
+  [](){}();
+}
-- 
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