title: Do we need sconscript file in every source directory
body: <p>I am using scons to compile my project.
  In my project source files are in different directories.
  Do we need sconscript file in every directory to compile those project source files?</p>
  
  <p>I tried to compile all directories with the single sconscript file. But all object files are adding to my source directory only.</p>
  
  <p>I am using this function:</p>
  
  <pre><code>env.Library('libs',files_list)
  </code></pre>
  
  <p>If files_list contains the only file names then Obj files are generating @ variant directory.</p>
  
  <p>If files_list contains the file path names then Obj files are generating @ source directory.</p>
  
  <p>Can you tell me how to do this?</p>