title: "make: yacc: Command not found" after installing Bison
body: <p>While running a makefile in gcc 4.1.2 (linux 5), I got the following error</p>
  
  <pre><code>make: yacc: Command not found
  </code></pre>
  
  <p>By googling, I came to know that this error can be rectified by installing Bison-GNU parser generator.
  But even after installing Bison, I get the same error.</p>
  
  <p>How can this error be solved?</p>