Package compatibility component.
Change-Id: I4324df1814ae9450b254b22c7bd1b28e4826a29b
diff --git a/build/sdk.atree b/build/sdk.atree
index 58a5ccf..186ab04 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -193,8 +193,18 @@
sdk/files/sdk_files_NOTICE.txt samples/${PLATFORM_NAME}/NOTICE.txt
##############################################################################
-# Samples Component
+# Add-on Folder
##############################################################################
# empty add-on folder with just a readme copied from sdk.git
sdk/files/README_add-ons.txt add-ons/README.txt
+
+##############################################################################
+# Extra Component: Compatibility
+##############################################################################
+
+development/sdk/compatibility_source.properties extras/android/compatibility/source.properties
+development/sdk/compatibility_README.txt extras/android/compatibility/README.txt
+out/dist/android-support-v4.jar extras/android/compatibility/v4/android-support-v4.jar
+frameworks/support/v4 extras/android/compatibility/v4/src
+development/samples/ApiDemos extras/android/compatibility/v4/samples/ApiDemos
diff --git a/sdk/compatibility_README.txt b/sdk/compatibility_README.txt
new file mode 100644
index 0000000..d1f15ed
--- /dev/null
+++ b/sdk/compatibility_README.txt
@@ -0,0 +1,16 @@
+Compatibility Libraries for Android.
+
+This SDK component contains static libraries providing access to newer APIs
+on older platforms. To use those libraries, simply copy them as static libraries
+into your project.
+
+"v4" provides support for using new APIs on Android API 4 (1.6 - Donut) and above.
+
+v4/android-support-v4.jar contains:
+- Fragment API. New in API 11 (3.0 - Honeycomb). http://developer.android.com/reference/android/app/Fragment.html
+- Loader API. New in API 11 (3.0 - Honeycomb). http://developer.android.com/reference/android/app/LoaderManager.html
+- CursorAdapter / ResourceCursorAdapter / SimpleCursorAdapter. These are the API 11 versions.
+- MenuCompat allows calling MenuItem.setShowAsAction which only exists on API 11.
+
+v4/src/ is the source code for the compatibility library
+v4/samples/ provides a version of ApiDemos using the library.
\ No newline at end of file
diff --git a/sdk/compatibility_source.properties b/sdk/compatibility_source.properties
new file mode 100644
index 0000000..ba79b6c
--- /dev/null
+++ b/sdk/compatibility_source.properties
@@ -0,0 +1,2 @@
+Pkg.UserSrc=false
+Pkg.Revision=1