From ea9c445f066589067992694cb6abc0d70ad97dd7 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Fri, 4 Apr 2014 09:15:18 +0200
Subject: [PATCH] Features: Add cxx_raw_string_literals.

---
 Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst        | 5 +++++
 Modules/Compiler/GNU-CXX-FeatureTests.cmake       | 1 +
 Source/cmMakefile.cxx                             | 1 +
 Tests/CompileFeatures/cxx_raw_string_literals.cpp | 7 +++++++
 4 files changed, 14 insertions(+)
 create mode 100644 Tests/CompileFeatures/cxx_raw_string_literals.cpp

diff --git a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
index b8af28faa..e482fe3eb 100644
--- a/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
+++ b/Help/variable/CMAKE_CXX_KNOWN_FEATURES.rst
@@ -87,6 +87,11 @@ The features known to this version of CMake are:
 
   .. _N2930: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2930.html
 
+``cxx_raw_string_literals``
+  Raw string literals, as defined in N2442_.
+
+  .. _N2442: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm
+
 ``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 c48fca8df..5c1f2c877 100644
--- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake
+++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
@@ -25,6 +25,7 @@ set(_cmake_feature_test_cxx_range_for "${GNU46_CXX11}")
 set(GNU45_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_explicit_conversions "${GNU45_CXX11}")
 set(_cmake_feature_test_cxx_lambdas "${GNU45_CXX11}")
+set(_cmake_feature_test_cxx_raw_string_literals "${GNU45_CXX11}")
 # TODO: Should be supported by GNU 4.4
 set(GNU44_CXX11 "${_oldestSupported} && __cplusplus >= 201103L")
 set(_cmake_feature_test_cxx_auto_type "${GNU44_CXX11}")
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index b1f6cd090..2a10f1e48 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -57,6 +57,7 @@
   F(cxx_nullptr) \
   F(cxx_override) \
   F(cxx_range_for) \
+  F(cxx_raw_string_literals) \
   F(cxx_static_assert) \
   F(cxx_strong_enums) \
   F(cxx_trailing_return_types) \
diff --git a/Tests/CompileFeatures/cxx_raw_string_literals.cpp b/Tests/CompileFeatures/cxx_raw_string_literals.cpp
new file mode 100644
index 000000000..ea4d2312c
--- /dev/null
+++ b/Tests/CompileFeatures/cxx_raw_string_literals.cpp
@@ -0,0 +1,7 @@
+
+void someFunc()
+{
+const char p[] = R"(a\
+b
+c)";
+}