title: Filename too long sbt
body: <p>I am getting an error saying I have a file that is too long in sbt.   </p>
  
  <pre><code> [info] Compiling 29 Scala sources to /home/chris/dev/suredbits-core/target/scala-2.11/classes...
      [error] File name too long
      [error] one error found
      [error] (compile:compile) Compilation failed
      [error] Total time: 7 s, completed Feb 17, 2015 8:10:25 AM
  </code></pre>
  
  <p>How do I find out which file is too long so I can shorten the filename? I have added the compiler flag <code>-Xmax-classfile-name</code> and set it to 254.</p>