From 24dd2366148a97313c905cb87dc1a9c07e57506f Mon Sep 17 00:00:00 2001
From: Lu Wang <coolwanglu@gmail.com>
Date: Mon, 17 Nov 2014 22:53:42 +0800
Subject: [PATCH] check more c++11 features

---
 CMakeLists.txt      | 16 +++++++++++++---
 test/.gitattributes |  1 +
 2 files changed, 14 insertions(+), 3 deletions(-)
 create mode 100644 test/.gitattributes

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f17578b..b1f5413 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,10 +84,20 @@ else()
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
 endif()
 
-include(CheckCXXCompilerFlag)
-check_cxx_compiler_flag("${CMAKE_CXX_FLAGS}" CXX0X_SUPPORT)
+# check the C++11 features we need
+include(CheckCXXSourceCompiles)
+check_cxx_source_compiles("
+#include <vector>
+int main()
+{
+  char * ptr = nullptr;
+  std::vector<int> v;
+  auto f = [&](){ for(auto & i : v) ++i; };
+  f();
+}
+" CXX0X_SUPPORT)
 if(NOT CXX0X_SUPPORT)
-    message(FATAL_ERROR "Error: your compiler does not support C++0x, please update it.")
+    message(FATAL_ERROR "Error: your compiler does not support C++0x/C++11, please update it.")
 endif()
 
 
diff --git a/test/.gitattributes b/test/.gitattributes
new file mode 100644
index 0000000..d72fd52
--- /dev/null
+++ b/test/.gitattributes
@@ -0,0 +1 @@
+*.pdf binary