Android :: Compile Camera Application For SDK 1.6

I am trying to compile and run the Android Camera for sdk 1.6 (also called API level 4 or Donut release). While there is no minSdkVersion in the AndroidManifest, it clearly does not run on a donut device. In fact, if compiled with sdk 2.2 the camera will crash with a NoSuchMethodError execption on an avd or a G1 with sdk 1.6. I tried also checking out the [donut-release] tag, but, strangely, it won't even compile giving many errors like:

[javac] /home/mrucci/camtest2/src/com/android/camera/ImageManager.java:41: cannot find symbol
[javac] symbol : class DrmStore
[javac] location: package android.provider
[javac] import android.provider.DrmStore;
[javac] ^
[javac] /home/mrucci/camtest2/src/com/android/camera/Util.java:32: cannot find symbol
[javac] symbol : class MediaMetadataRetriever
[javac] location: package android.media
[javac] import android.media.MediaMetadataRetriever;
[javac] ^
[javac] /home/mrucci/camtest2/src/com/android/camera/MenuHelper.java:29: cannot find symbol
[javac] symbol : class ExifInterface
[javac] location: package android.media
[javac] import android.media.ExifInterface;
...
[javac] ^
[javac] /home/mrucci/camtest2/src/com/android/camera/ActionMenuButton.java:81: cannot find symbol
[javac] symbol : variable mScrollX
[javac] location: class com.android.camera.ActionMenuButton
[javac] mScrollX + mRight - mLeft),
[javac] ^
[javac] /home/mrucci/camtest2/src/com/android/camera/ActionMenuButton.java:81: cannot find symbol
[javac] symbol : variable mRight
[javac] location: class com.android.camera.ActionMenuButton
[javac] mScrollX + mRight - mLeft),

In particular, I really do not understand why ExifInterface is used in the "donut" tag when it has been introduced since API level 5.