title: Make: Override a flag
body: <p>I was a little confused with the responses to <a href="https://stackoverflow.com/questions/11750988/quick-way-to-override-werror-flag">Quick way to override -Werror flag?</a></p>
  
  <p>So I ask my specific question here.</p>
  
  <p>I have multiple Makefiles working together and CFLAGS has been set along the way to (-Werror -Wall .. and many others)</p>
  
  <p>But in one of the Makefiles, I wish that the errors not be treated as warnings and so I would like to remove -Werror flag.</p>
  
  <p>What would be the best way to achieve this, so that only for this Makefile, -Werror flag is removed and for the others normal execution takes place?</p>
  
  <p>Thanks, 
  Sunny</p>