title: Warning C4005 'identifier' : macro redefinition
body: <p>I want my application to work in win32 and x64 platform. I have added below code in header file but I am getting C4005 warning. How can I avoid this?</p>
  
  <pre><code>#ifdef WIN32
  #define SIZEOF_ANALYSIS_INFO 168    
  #endif
  #ifdef _WIN64
  #define SIZEOF_ANALYSIS_INFO 172
  #endif
  </code></pre>