From 4f88edde14b4eb16ca3ff210d96e0e0c8e6dc650 Mon Sep 17 00:00:00 2001
From: Ivan Smirnov <aldanor@users.noreply.github.com>
Date: Sun, 17 Jan 2016 16:42:11 +0000
Subject: [PATCH] Add an include in cmake.rst

---
 docs/cmake.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/cmake.rst b/docs/cmake.rst
index 41f58fff5..5952920a5 100644
--- a/docs/cmake.rst
+++ b/docs/cmake.rst
@@ -15,6 +15,8 @@ and that the pybind11 repository is located in a subdirectory named :file:`pybin
 
     # Add a CMake parameter for choosing a desired Python version
     set(EXAMPLE_PYTHON_VERSION "" CACHE STRING "Python version to use for compiling the example library")
+    
+    include(CheckCXXCompilerFlag)
 
     # Set a default build configuration if none is specified. 'MinSizeRel' produces the smallest binaries
     if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)