title: How do I get Eclipse to resolve classes generated with Maven 2?
body: <p>I'm using Google Protocol Buffers to generate some Java classes for my project. Using Maven 2 and its "antrun" plugin, these classes are freshly generated before compile, output to target/generated-sources and put on the classpath during the build. So building the project from the POM is no problem.</p>
  
  <p>However, Eclipse doesn't know how to resolve the generated class, because the folder it's in doesn't seem to be on the IDE's classpath during development. I'm using m2eclipse and have it manage dependencies for me, so I had expected Maven to take care of this.</p>
  
  <p>How can I get IDE support (code completion etc.) for the generated code?</p>