anchor.diff:    * CMakeLists.txt - Contains the CMake commands you wish to run
     * main.cpp - The source file with main
   
  -[[concepts]]
  -Concepts
  -~~~~~~~~
  +# Concepts
   
  -[[set-cpp-flag]]
  -Set C++ Flag
  -^^^^^^^^^^^^
  +
  +## Set C++ Flag
   
   Similar to the build type a C++ compiler flag can be set using the following methods.
   
  
positive.code: For more details, see https://cmake.org/cmake/help/v3.0/command/set.html[here]
  ====
  
  [[building-the-example]]
  Building the Example
  ~~~~~~~~~~~~~~~~~~~~
  
  [source,bash]
  ----
  
negative.code: cmake .. -DCMAKE_CXX_FLAGS="-DEX3"
  ----
  
  ## Set Default C++ Flags
  
  The default `CMAKE_CXX_FLAGS` is either empty or contains the appropriate flags
  for the build type.
  