title: pretty print makefiles
body: <p>The linux kernel (and various other projects including git) have very nice makefiles that hide the giant cc calls into nice little acronyms.</p>
  
  <p>For example:</p>
  
  <pre><code>gcc -O2 -o cool.o cool.c -llib
  gcc -O2 -o neat.o neat.c -llib
  </code></pre>
  
  <p>would become:</p>
  
  <pre><code>CC cool.c
  CC neat.c
  </code></pre>
  
  <p>Which is really nice if you have a project with a large number of files and long compiler flags. I recall that this had to do with suppressing the default output and making a custom one. How do you do it?</p>