title: What does "CC=/path/to/directory ./configure" do?
body: <p>What does <code>CC=/path/to/afl/afl-gcc ./configure</code> do? (see. <a href="http://lcamtuf.coredump.cx/afl/README.txt" rel="nofollow">AFL's Readme</a>)</p>
  
  <p>Is it <em>telling</em> GCC to look into that directory for files?
  (Maybe something like a path-variable, because of the <strong>=</strong>-character?)</p>
  
  <p>Strange thing also: there is no configure-exe. in that <a href="http://lcamtuf.coredump.cx/afl/releases/afl-latest.tgz" rel="nofollow">directory</a>.</p>