title: Project dependency in Eclipse CDT
body: <p>I'm using eclipse for the first time. I'm a seasoned VisualStudio user, so I'm trying to find similar functionality in eclipse. I have two projects, A and B. Project A spits out libA.a when it's done compiling. Project B links against libA.a. Here is my problem.</p>
  
  <ol>
  <li>I compile project A then project B, everything is fine. </li>
  <li>I make a code change to project A that requires a build of project A. </li>
  <li>I try to build project B, but it states that no changes have been detected.</li>
  </ol>
  
  <p>How do I make project B aware of the output of project A?? Currently I'm having to do a clean build of project B for it to re-link against libA.a.</p>
  
  <p>Thanks.</p>
  
  <p>EDIT: In my ProjectB->Path and Symbols->References tab, I have project A checked. This doesn't relink after project A is rebuilt.</p>