title: External makefile to call Eclipse CDT's generated makefile - according to Debug\ Release config
body: <p>I'm using Eclipse CDT on Linux to build a c++ executable and several static libraries which the executable depends on.
  Everything is good - Eclipse generates the makefiles for both Debug and Release as expected.</p>
  
  <p>However, I want to compile this code also on a computer without Eclipse installed, so I thought to write a simple makefile which calls the Eclipse makefile.</p>
  
  <p>So I started with something like:</p>
  
  <pre><code>all:  
  cd Lib1/Release &amp;&amp; make all  
  cd Lib2/Release &amp;&amp; make all  
  ...  
  cd Exec/Release &amp;&amp; make all
  </code></pre>
  
  <p>This works for Release only, as you see...</p>
  
  <p>How can I change the makefile so I can use the selected user's configuration ?</p>
  
  <p>Thank you very much.</p>