title: Ant fails to build when using Google APIs
body: <p>I am trying to build my Android project with Ant. Whenever I use Eclipse to do the build the app compiles sucessfully. I am then able to run a <code>ant installd</code> and install the debug version of the app to my device. However if I run a <code>ant clean</code> and then run <code>ant debug</code> the build fails beccause it can not find the class OverlayItem. However in the project.properties I have <code>target=Google Inc.:Google APIs:4</code>. What am I doing wrong?</p>
  
  <p><strong>Console Output</strong></p>
  
  <pre><code>cas-v1500-sh:VIIAD Ant VIIAD$ ant debug
  Buildfile: /Users/VIIAD/Desktop/VIIAD/VIIAD Ant/build.xml
  
  -set-mode-check:
  
  -set-debug-files:
  
  -set-debug-mode:
  
  -debug-obfuscation-check:
  
  -setup:
       [echo] Gathering info for VIIAD Ant...
      [setup] Android SDK Tools Revision 16
      [setup] Project Target: Google APIs
      [setup] Vendor: Google Inc.
      [setup] Platform Version: 1.6
      [setup] API level: 4
      [setup] 
      [setup] ------------------
      [setup] Resolving library dependencies:
      [setup] No library dependencies.
      [setup] 
      [setup] ------------------
      [setup] 
  
  -build-setup:
       [echo] Creating output directories if needed...
  
  -pre-build:
  
  -code-gen:
       [echo] ----------
       [echo] Handling aidl files...
       [aidl] No AIDL files to compile.
       [echo] ----------
       [echo] Handling RenderScript files...
  [renderscript] No RenderScript files to compile.
       [echo] ----------
       [echo] Handling Resources...
       [aapt] Found Deleted Target File
       [aapt] Generating resource IDs...
  
  -pre-compile:
  
  -compile:
      [javac] Compiling 42 source files to /Users/VIIAD/Desktop/VIIAD/VIIAD Ant/bin/classes
      [javac] /Users/VIIAD/Desktop/VIIAD/VIIAD Ant/src/com/android/viiad/SearchResultsMapActivity.java:154: cannot find symbol
      [javac] symbol  : class OverlayItem
      [javac] location: class com.android.viiad.SearchResultsMapActivity
      [javac]     public class SearchResultItemOverlay extends com.android.viiad.mapviewballoons.BalloonItemizedOverlay&lt;OverlayItem&gt; {
      [javac]                                                                                                           ^
      [javac] 1 error
  
  BUILD FAILED
  /Users/VIIAD/android-sdk-macosx/tools/ant/build.xml:602: The following error occurred while executing this line:
  /Users/VIIAD/android-sdk-macosx/tools/ant/build.xml:622: Compile failed; see the compiler error output for details.
  </code></pre>