title: What are export_includes and import_includes files when building Android
body: <p>Can't find any useful info on this using Google.</p>
  
  <p>All I found are people asking how to resolve compilation errors such as</p>
  
  <pre><code>make: *** No rule to make target `/home/joe/[ubuntuTouch]/out/target/product/jewel/obj/SHARED_LIBRARIES/libril_intermediates/export_includes', needed by `/home/joe/[ubuntuTouch]/out/target/product/jewel/obj/EXECUTABLES/rild_intermediates/import_includes'.  Stop.
  </code></pre>