diff --git a/default.xml b/default.xml
index 92c41b9..079bc3a 100644
--- a/default.xml
+++ b/default.xml
@@ -8,41 +8,41 @@
            remote="aosp"
            sync-j="4" />
 
-  <project path="build" name="platform/build" >
+  <project path="build" name="platform/build" groups="pdk" >
     <copyfile src="core/root.mk" dest="Makefile" />
   </project>
-  <project path="abi/cpp" name="platform/abi/cpp" />
-  <project path="bionic" name="platform/bionic" />
+  <project path="abi/cpp" name="platform/abi/cpp" groups="pdk" />
+  <project path="bionic" name="platform/bionic" groups="pdk" />
   <project path="bootable/bootloader/legacy" name="platform/bootable/bootloader/legacy" />
   <project path="bootable/diskinstaller" name="platform/bootable/diskinstaller" />
-  <project path="bootable/recovery" name="platform/bootable/recovery" />
+  <project path="bootable/recovery" name="platform/bootable/recovery" groups="pdk" />
   <project path="cts" name="platform/cts" />
   <project path="dalvik" name="platform/dalvik" />
   <project path="development" name="platform/development" />
-  <project path="device/asus/grouper" name="device/asus/grouper" groups="device" />
-  <project path="device/asus/tilapia" name="device/asus/tilapia" groups="device" />
+  <project path="device/asus/grouper" name="device/asus/grouper" groups="device,grouper" />
+  <project path="device/asus/tilapia" name="device/asus/tilapia" groups="device,grouper" />
   <project path="device/common" name="device/common" />
-  <project path="device/generic/armv7-a-neon" name="device/generic/armv7-a-neon" />
-  <project path="device/generic/armv7-a" name="device/generic/armv7-a" />
-  <project path="device/generic/common" name="device/generic/common" />
-  <project path="device/generic/goldfish" name="device/generic/goldfish" />
-  <project path="device/generic/mips" name="device/generic/mips" />
-  <project path="device/generic/x86" name="device/generic/x86" />
+  <project path="device/generic/armv7-a-neon" name="device/generic/armv7-a-neon" groups="pdk" />
+  <project path="device/generic/armv7-a" name="device/generic/armv7-a" groups="pdk" />
+  <project path="device/generic/common" name="device/generic/common" groups="pdk" />
+  <project path="device/generic/goldfish" name="device/generic/goldfish" groups="pdk" />
+  <project path="device/generic/mips" name="device/generic/mips" groups="pdk" />
+  <project path="device/generic/x86" name="device/generic/x86" groups="pdk" />
   <project path="device/google/accessory/arduino" name="device/google/accessory/arduino" groups="device" />
   <project path="device/google/accessory/demokit" name="device/google/accessory/demokit" groups="device" />
-  <project path="device/google/phantasm" name="device/google/phantasm" groups="device" />
-  <project path="device/lge/mako" name="device/lge/mako" groups="device" />
-  <project path="device/lge/mako-kernel" name="device/lge/mako-kernel" groups="device" />
-  <project path="device/sample" name="device/sample" />
-  <project path="device/samsung/maguro" name="device/samsung/maguro" groups="device" />
-  <project path="device/samsung/manta" name="device/samsung/manta" groups="device" />
-  <project path="device/samsung/toro" name="device/samsung/toro" groups="device" />
-  <project path="device/samsung/toroplus" name="device/samsung/toroplus" groups="device" />
-  <project path="device/samsung/tuna" name="device/samsung/tuna" groups="device" />
+  <project path="device/google/phantasm" name="device/google/phantasm" groups="device,phantasm" />
+  <project path="device/lge/mako" name="device/lge/mako" groups="device,mako" />
+  <project path="device/lge/mako-kernel" name="device/lge/mako-kernel" groups="device,mako" />
+  <project path="device/sample" name="device/sample" groups="pdk" />
+  <project path="device/samsung/maguro" name="device/samsung/maguro" groups="device,tuna" />
+  <project path="device/samsung/manta" name="device/samsung/manta" groups="device,manta" />
+  <project path="device/samsung/toro" name="device/samsung/toro" groups="device,tuna" />
+  <project path="device/samsung/toroplus" name="device/samsung/toroplus" groups="device,tuna" />
+  <project path="device/samsung/tuna" name="device/samsung/tuna" groups="device,tuna" />
   <project path="device/samsung_slsi/arndale" name="device/samsung_slsi/arndale" groups="device" />
   <project path="device/ti/panda" name="device/ti/panda" groups="device" />
   <project path="docs/source.android.com" name="platform/docs/source.android.com" />
-  <project path="external/aac" name="platform/external/aac" />
+  <project path="external/aac" name="platform/external/aac" groups="pdk" />
   <project path="external/android-clat" name="platform/external/android-clat" />
   <project path="external/android-mock" name="platform/external/android-mock" />
   <project path="external/ant-glob" name="platform/external/ant-glob" />
@@ -55,23 +55,23 @@
   <project path="external/astl" name="platform/external/astl" />
   <project path="external/bison" name="platform/external/bison" />
   <project path="external/blktrace" name="platform/external/blktrace" />
-  <project path="external/bluetooth/bluedroid" name="platform/external/bluetooth/bluedroid" />
+  <project path="external/bluetooth/bluedroid" name="platform/external/bluetooth/bluedroid" groups="pdk" />
   <project path="external/bouncycastle" name="platform/external/bouncycastle" />
-  <project path="external/bsdiff" name="platform/external/bsdiff" />
-  <project path="external/bzip2" name="platform/external/bzip2" />
+  <project path="external/bsdiff" name="platform/external/bsdiff" groups="pdk" />
+  <project path="external/bzip2" name="platform/external/bzip2" groups="pdk" />
   <project path="external/checkpolicy" name="platform/external/checkpolicy" />
   <project path="external/chromium" name="platform/external/chromium" />
-  <project path="external/chromium-trace" name="platform/external/chromium-trace" />
+  <project path="external/chromium-trace" name="platform/external/chromium-trace" groups="pdk" />
   <project path="external/cibu-fonts" name="platform/external/cibu-fonts" />
-  <project path="external/clang" name="platform/external/clang" />
-  <project path="external/compiler-rt" name="platform/external/compiler-rt" />
-  <project path="external/dbus" name="platform/external/dbus" />
+  <project path="external/clang" name="platform/external/clang" groups="pdk" />
+  <project path="external/compiler-rt" name="platform/external/compiler-rt" groups="pdk" />
+  <project path="external/dbus" name="platform/external/dbus" groups="pdk" />
   <project path="external/dexmaker" name="platform/external/dexmaker" />
   <project path="external/dhcpcd" name="platform/external/dhcpcd" />
-  <project path="external/dnsmasq" name="platform/external/dnsmasq" />
+  <project path="external/dnsmasq" name="platform/external/dnsmasq" groups="pdk" />
   <project path="external/doclava" name="platform/external/doclava" />
   <project path="external/dropbear" name="platform/external/dropbear" />
-  <project path="external/e2fsprogs" name="platform/external/e2fsprogs" />
+  <project path="external/e2fsprogs" name="platform/external/e2fsprogs" groups="pdk" />
   <project path="external/easymock" name="platform/external/easymock" />
   <project path="external/eclipse-basebuilder" name="platform/external/eclipse-basebuilder" />
   <project path="external/eclipse-windowbuilder" name="platform/external/eclipse-windowbuilder" />
@@ -80,37 +80,37 @@
   <project path="external/embunit" name="platform/external/embunit" />
   <project path="external/emma" name="platform/external/emma" />
   <project path="external/esd" name="platform/external/esd" />
-  <project path="external/expat" name="platform/external/expat" />
+  <project path="external/expat" name="platform/external/expat" groups="pdk" />
   <project path="external/eyes-free" name="platform/external/eyes-free" />
   <project path="external/fat32lib" name="platform/external/fat32lib" />
   <project path="external/fdlibm" name="platform/external/fdlibm" />
-  <project path="external/flac" name="platform/external/flac" />
-  <project path="external/freetype" name="platform/external/freetype" />
+  <project path="external/flac" name="platform/external/flac" groups="pdk" />
+  <project path="external/freetype" name="platform/external/freetype" groups="pdk" />
   <project path="external/fsck_msdos" name="platform/external/fsck_msdos" />
   <project path="external/ganymed-ssh2" name="platform/external/ganymed-ssh2" />
-  <project path="external/gcc-demangle" name="platform/external/gcc-demangle" />
+  <project path="external/gcc-demangle" name="platform/external/gcc-demangle" groups="pdk" />
   <project path="external/genext2fs" name="platform/external/genext2fs" />
   <project path="external/giflib" name="platform/external/giflib" />
   <project path="external/google-diff-match-patch" name="platform/external/google-diff-match-patch" />
   <project path="external/grub" name="platform/external/grub" />
-  <project path="external/gtest" name="platform/external/gtest" />
+  <project path="external/gtest" name="platform/external/gtest" groups="pdk" />
   <project path="external/guava" name="platform/external/guava" />
   <project path="external/hamcrest" name="platform/external/hamcrest" />
   <project path="external/harfbuzz" name="platform/external/harfbuzz" />
   <project path="external/harfbuzz_ng" name="platform/external/harfbuzz_ng" />
   <project path="external/hyphenation" name="platform/external/hyphenation" />
-  <project path="external/icu4c" name="platform/external/icu4c" />
-  <project path="external/iproute2" name="platform/external/iproute2" />
+  <project path="external/icu4c" name="platform/external/icu4c" groups="pdk" />
+  <project path="external/iproute2" name="platform/external/iproute2" groups="pdk" />
   <project path="external/ipsec-tools" name="platform/external/ipsec-tools" />
   <project path="external/iptables" name="platform/external/iptables" />
   <project path="external/jack" name="platform/external/jack" />
   <project path="external/javasqlite" name="platform/external/javasqlite" />
   <project path="external/javassist" name="platform/external/javassist" />
   <project path="external/jdiff" name="platform/external/jdiff" />
-  <project path="external/jhead" name="platform/external/jhead" />
+  <project path="external/jhead" name="platform/external/jhead" groups="pdk" />
   <project path="external/jmdns" name="platform/external/jmdns" />
   <project path="external/jmonkeyengine" name="platform/external/jmonkeyengine" />
-  <project path="external/jpeg" name="platform/external/jpeg" />
+  <project path="external/jpeg" name="platform/external/jpeg" groups="pdk" />
   <project path="external/jsilver" name="platform/external/jsilver" />
   <project path="external/jsr305" name="platform/external/jsr305" />
   <project path="external/junit" name="platform/external/junit" />
@@ -118,33 +118,33 @@
   <project path="external/libcap-ng" name="platform/external/libcap-ng" />
   <project path="external/libffi" name="platform/external/libffi" />
   <project path="external/libgsm" name="platform/external/libgsm" />
-  <project path="external/liblzf" name="platform/external/liblzf" />
+  <project path="external/liblzf" name="platform/external/liblzf" groups="pdk" />
   <project path="external/libmtp" name="platform/external/libmtp" />
-  <project path="external/libnfc-nci" name="platform/external/libnfc-nci" />
-  <project path="external/libnfc-nxp" name="platform/external/libnfc-nxp" />
-  <project path="external/libnl-headers" name="platform/external/libnl-headers" />
+  <project path="external/libnfc-nci" name="platform/external/libnfc-nci" groups="pdk" />
+  <project path="external/libnfc-nxp" name="platform/external/libnfc-nxp" groups="nxp_nfc" />
+  <project path="external/libnl-headers" name="platform/external/libnl-headers" groups="pdk" />
   <project path="external/libogg" name="platform/external/libogg" />
   <project path="external/libpcap" name="platform/external/libpcap" />
   <project path="external/libphonenumber" name="platform/external/libphonenumber" />
-  <project path="external/libpng" name="platform/external/libpng" />
+  <project path="external/libpng" name="platform/external/libpng" groups="pdk" />
   <project path="external/libppp" name="platform/external/libppp" />
   <project path="external/libselinux" name="platform/external/libselinux" />
   <project path="external/libsepol" name="platform/external/libsepol" />
   <project path="external/libusb" name="platform/external/libusb" />
   <project path="external/libusb-compat" name="platform/external/libusb-compat" />
   <project path="external/libvorbis" name="platform/external/libvorbis" />
-  <project path="external/libvpx" name="platform/external/libvpx" />
+  <project path="external/libvpx" name="platform/external/libvpx" groups="pdk" />
   <project path="external/libxml2" name="platform/external/libxml2" />
   <project path="external/libxslt" name="platform/external/libxslt" />
   <project path="external/libyuv" name="platform/external/libyuv" />
   <project path="external/linux-tools-perf" name="platform/external/linux-tools-perf" />
   <project path="external/littlemock" name="platform/external/littlemock" />
-  <project path="external/llvm" name="platform/external/llvm" />
+  <project path="external/llvm" name="platform/external/llvm" groups="pdk" />
   <project path="external/lohit-fonts" name="platform/external/lohit-fonts" />
   <project path="external/markdown" name="platform/external/markdown" />
-  <project path="external/mdnsresponder" name="platform/external/mdnsresponder" />
-  <project path="external/mesa3d" name="platform/external/mesa3d" />
-  <project path="external/mksh" name="platform/external/mksh" />
+  <project path="external/mdnsresponder" name="platform/external/mdnsresponder" groups="pdk" />
+  <project path="external/mesa3d" name="platform/external/mesa3d" groups="pdk" />
+  <project path="external/mksh" name="platform/external/mksh" groups="pdk" />
   <project path="external/mockwebserver" name="platform/external/mockwebserver" />
   <project path="external/mp4parser" name="platform/external/mp4parser" />
   <project path="external/mtpd" name="platform/external/mtpd" />
@@ -158,60 +158,60 @@
   <project path="external/opencv" name="platform/external/opencv" />
   <project path="external/openfst" name="platform/external/openfst" />
   <project path="external/openssh" name="platform/external/openssh" />
-  <project path="external/openssl" name="platform/external/openssl" />
+  <project path="external/openssl" name="platform/external/openssl" groups="pdk" />
   <project path="external/oprofile" name="platform/external/oprofile" />
   <project path="external/ping" name="platform/external/ping" />
   <project path="external/ping6" name="platform/external/ping6" />
   <project path="external/ppp" name="platform/external/ppp" />
-  <project path="external/proguard" name="platform/external/proguard" />
-  <project path="external/protobuf" name="platform/external/protobuf" />
+  <project path="external/proguard" name="platform/external/proguard" groups="pdk-java" />
+  <project path="external/protobuf" name="platform/external/protobuf" groups="pdk" />
   <project path="external/qemu" name="platform/external/qemu" />
   <project path="external/qemu-pc-bios" name="platform/external/qemu-pc-bios" />
   <project path="external/quake" name="platform/external/quake" />
   <project path="external/regex-re2" name="platform/external/regex-re2" />
   <project path="external/replicaisland" name="platform/external/replicaisland" />
-  <project path="external/safe-iop" name="platform/external/safe-iop" />
+  <project path="external/safe-iop" name="platform/external/safe-iop" groups="pdk" />
   <project path="external/sepolicy" name="platform/external/sepolicy" />
   <project path="external/skia" name="platform/external/skia" />
   <project path="external/smali" name="platform/external/smali" />
-  <project path="external/sonivox" name="platform/external/sonivox" />
-  <project path="external/speex" name="platform/external/speex" />
-  <project path="external/sqlite" name="platform/external/sqlite" />
+  <project path="external/sonivox" name="platform/external/sonivox" groups="pdk" />
+  <project path="external/speex" name="platform/external/speex" groups="pdk" />
+  <project path="external/sqlite" name="platform/external/sqlite" groups="pdk" />
   <project path="external/srec" name="platform/external/srec" />
   <project path="external/srtp" name="platform/external/srtp" />
-  <project path="external/stlport" name="platform/external/stlport" />
+  <project path="external/stlport" name="platform/external/stlport" groups="pdk" />
   <project path="external/strace" name="platform/external/strace" />
   <project path="external/stressapptest" name="platform/external/stressapptest" />
   <project path="external/svox" name="platform/external/svox" />
   <project path="external/tagsoup" name="platform/external/tagsoup" />
   <project path="external/tcpdump" name="platform/external/tcpdump" />
-  <project path="external/tinyalsa" name="platform/external/tinyalsa" />
+  <project path="external/tinyalsa" name="platform/external/tinyalsa" groups="pdk" />
   <project path="external/tinyxml" name="platform/external/tinyxml" />
-  <project path="external/tinyxml2" name="platform/external/tinyxml2" />
-  <project path="external/tremolo" name="platform/external/tremolo" />
+  <project path="external/tinyxml2" name="platform/external/tinyxml2" groups="pdk" />
+  <project path="external/tremolo" name="platform/external/tremolo" groups="pdk" />
   <project path="external/v8" name="platform/external/v8" />
-  <project path="external/valgrind" name="platform/external/valgrind" />
+  <project path="external/valgrind" name="platform/external/valgrind" groups="pdk" />
   <project path="external/webkit" name="platform/external/webkit" />
   <project path="external/webp" name="platform/external/webp" />
-  <project path="external/webrtc" name="platform/external/webrtc" />
+  <project path="external/webrtc" name="platform/external/webrtc" groups="pdk" />
   <project path="external/wpa_supplicant_6" name="platform/external/wpa_supplicant_6" />
-  <project path="external/wpa_supplicant_8" name="platform/external/wpa_supplicant_8" />
+  <project path="external/wpa_supplicant_8" name="platform/external/wpa_supplicant_8" groups="pdk" />
   <project path="external/xmlwriter" name="platform/external/xmlwriter" />
   <project path="external/xmp_toolkit" name="platform/external/xmp_toolkit" />
-  <project path="external/yaffs2" name="platform/external/yaffs2" />
-  <project path="external/zlib" name="platform/external/zlib" />
+  <project path="external/yaffs2" name="platform/external/yaffs2" groups="pdk" />
+  <project path="external/zlib" name="platform/external/zlib" groups="pdk" />
   <project path="external/zxing" name="platform/external/zxing" />
-  <project path="frameworks/av" name="platform/frameworks/av" />
+  <project path="frameworks/av" name="platform/frameworks/av" groups="pdk" />
   <project path="frameworks/base" name="platform/frameworks/base" />
-  <project path="frameworks/compile/libbcc" name="platform/frameworks/compile/libbcc" />
-  <project path="frameworks/compile/linkloader" name="platform/frameworks/compile/linkloader" />
-  <project path="frameworks/compile/llvm-ndk-cc" name="platform/frameworks/compile/llvm-ndk-cc" />
-  <project path="frameworks/compile/mclinker" name="platform/frameworks/compile/mclinker" />
+  <project path="frameworks/compile/libbcc" name="platform/frameworks/compile/libbcc" groups="pdk" />
+  <project path="frameworks/compile/linkloader" name="platform/frameworks/compile/linkloader" groups="pdk" />
+  <project path="frameworks/compile/llvm-ndk-cc" name="platform/frameworks/compile/llvm-ndk-cc" groups="pdk" />
+  <project path="frameworks/compile/mclinker" name="platform/frameworks/compile/mclinker" groups="pdk" />
   <project path="frameworks/compile/slang" name="platform/frameworks/compile/slang" />
   <project path="frameworks/ex" name="platform/frameworks/ex" />
   <project path="frameworks/mff" name="platform/frameworks/mff" />
   <project path="frameworks/ml" name="platform/frameworks/ml" />
-  <project path="frameworks/native" name="platform/frameworks/native" />
+  <project path="frameworks/native" name="platform/frameworks/native" groups="pdk" />
   <project path="frameworks/opt/calendar" name="platform/frameworks/opt/calendar" />
   <project path="frameworks/opt/carddav" name="platform/frameworks/opt/carddav" />
   <project path="frameworks/opt/emoji" name="platform/frameworks/opt/emoji" />
@@ -221,38 +221,38 @@
   <project path="frameworks/opt/photoviewer" name="platform/frameworks/opt/photoviewer" />
   <project path="frameworks/opt/telephony" name="platform/frameworks/opt/telephony" />
   <project path="frameworks/opt/vcard" name="platform/frameworks/opt/vcard" />
-  <project path="frameworks/rs" name="platform/frameworks/rs" />
+  <project path="frameworks/rs" name="platform/frameworks/rs" groups="pdk" />
   <project path="frameworks/support" name="platform/frameworks/support" />
   <project path="frameworks/testing" name="platform/frameworks/testing" />
   <project path="frameworks/volley" name="platform/frameworks/volley" />
   <project path="frameworks/wilhelm" name="platform/frameworks/wilhelm" />
   <project path="gdk" name="platform/gdk" />
   <project path="hardware/akm" name="platform/hardware/akm" />
-  <project path="hardware/broadcom/wlan" name="platform/hardware/broadcom/wlan" />
-  <project path="hardware/invensense" name="platform/hardware/invensense" />
-  <project path="hardware/libhardware" name="platform/hardware/libhardware" />
-  <project path="hardware/libhardware_legacy" name="platform/hardware/libhardware_legacy" />
+  <project path="hardware/broadcom/wlan" name="platform/hardware/broadcom/wlan" groups="broadcom_wlan" />
+  <project path="hardware/invensense" name="platform/hardware/invensense" groups="invensense" />
+  <project path="hardware/libhardware" name="platform/hardware/libhardware" groups="pdk" />
+  <project path="hardware/libhardware_legacy" name="platform/hardware/libhardware_legacy" groups="pdk" />
   <project path="hardware/msm7k" name="platform/hardware/msm7k" />
-  <project path="hardware/qcom/audio" name="platform/hardware/qcom/audio" />
-  <project path="hardware/qcom/bt" name="platform/hardware/qcom/bt" />
-  <project path="hardware/qcom/camera" name="platform/hardware/qcom/camera" />
-  <project path="hardware/qcom/display" name="platform/hardware/qcom/display" />
-  <project path="hardware/qcom/gps" name="platform/hardware/qcom/gps" />
-  <project path="hardware/qcom/keymaster" name="platform/hardware/qcom/keymaster" />
-  <project path="hardware/qcom/media" name="platform/hardware/qcom/media" />
-  <project path="hardware/qcom/msm8960" name="platform/hardware/qcom/msm8960" />
-  <project path="hardware/qcom/power" name="platform/hardware/qcom/power" />
-  <project path="hardware/qcom/sensors" name="platform/hardware/qcom/sensors" />
-  <project path="hardware/qcom/wlan" name="platform/hardware/qcom/wlan" />
-  <project path="hardware/ril" name="platform/hardware/ril" />
-  <project path="hardware/samsung_slsi/exynos5" name="platform/hardware/samsung_slsi/exynos5" />
+  <project path="hardware/qcom/audio" name="platform/hardware/qcom/audio" groups="qcom" />
+  <project path="hardware/qcom/bt" name="platform/hardware/qcom/bt" groups="qcom" />
+  <project path="hardware/qcom/camera" name="platform/hardware/qcom/camera" groups="qcom" />
+  <project path="hardware/qcom/display" name="platform/hardware/qcom/display" groups="qcom" />
+  <project path="hardware/qcom/gps" name="platform/hardware/qcom/gps" groups="qcom" />
+  <project path="hardware/qcom/keymaster" name="platform/hardware/qcom/keymaster" groups="qcom" />
+  <project path="hardware/qcom/media" name="platform/hardware/qcom/media" groups="qcom" />
+  <project path="hardware/qcom/msm8960" name="platform/hardware/qcom/msm8960" groups="qcom" />
+  <project path="hardware/qcom/power" name="platform/hardware/qcom/power" groups="qcom" />
+  <project path="hardware/qcom/sensors" name="platform/hardware/qcom/sensors" groups="qcom" />
+  <project path="hardware/qcom/wlan" name="platform/hardware/qcom/wlan" groups="qcom_wlan" />
+  <project path="hardware/ril" name="platform/hardware/ril" groups="pdk" />
+  <project path="hardware/samsung_slsi/exynos5" name="platform/hardware/samsung_slsi/exynos5" groups="exynos5" />
   <project path="hardware/ti/omap3" name="platform/hardware/ti/omap3" />
-  <project path="hardware/ti/omap4-aah" name="platform/hardware/ti/omap4-aah" />
-  <project path="hardware/ti/omap4xxx" name="platform/hardware/ti/omap4xxx" />
+  <project path="hardware/ti/omap4-aah" name="platform/hardware/ti/omap4-aah" groups="omap4-aah" />
+  <project path="hardware/ti/omap4xxx" name="platform/hardware/ti/omap4xxx" groups="omap4" />
   <project path="hardware/ti/wlan" name="platform/hardware/ti/wlan" />
   <project path="hardware/ti/wpan" name="platform/hardware/ti/wpan" />
   <project path="libcore" name="platform/libcore" />
-  <project path="libnativehelper" name="platform/libnativehelper" />
+  <project path="libnativehelper" name="platform/libnativehelper" groups="pdk-java" />
   <project path="ndk" name="platform/ndk" />
   <project path="packages/apps/BasicSmsReceiver" name="platform/packages/apps/BasicSmsReceiver" />
   <project path="packages/apps/Bluetooth" name="platform/packages/apps/Bluetooth" />
@@ -314,50 +314,52 @@
   <project path="packages/wallpapers/MusicVisualization" name="platform/packages/wallpapers/MusicVisualization" />
   <project path="packages/wallpapers/NoiseField" name="platform/packages/wallpapers/NoiseField" />
   <project path="packages/wallpapers/PhaseBeam" name="platform/packages/wallpapers/PhaseBeam" />
-  <project path="pdk" name="platform/pdk" />
-  <project path="prebuilts/clang/darwin-x86/3.1" name="platform/prebuilts/clang/darwin-x86/3.1" groups="darwin" />
-  <project path="prebuilts/clang/darwin-x86/3.2" name="platform/prebuilts/clang/darwin-x86/3.2" groups="darwin" />
-  <project path="prebuilts/clang/linux-x86/3.1" name="platform/prebuilts/clang/linux-x86/3.1" groups="linux" />
-  <project path="prebuilts/clang/linux-x86/3.2" name="platform/prebuilts/clang/linux-x86/3.2" groups="linux" />
-  <project path="prebuilts/eclipse" name="platform/prebuilts/eclipse" />
+  <project path="pdk" name="platform/pdk" groups="pdk" />
+  <project path="prebuilts/clang/darwin-x86/3.1" name="platform/prebuilts/clang/darwin-x86/3.1" groups="pdk,darwin" />
+  <project path="prebuilts/clang/darwin-x86/3.2" name="platform/prebuilts/clang/darwin-x86/3.2" groups="pdk,darwin" />
+  <project path="prebuilts/clang/linux-x86/3.1" name="platform/prebuilts/clang/linux-x86/3.1" groups="pdk,linux" />
+  <project path="prebuilts/clang/linux-x86/3.2" name="platform/prebuilts/clang/linux-x86/3.2" groups="pdk,linux" />
+  <project path="prebuilts/eclipse" name="platform/prebuilts/eclipse" groups="pdk" />
   <project path="prebuilts/eclipse-build-deps" name="platform/prebuilts/eclipse-build-deps" groups="notdefault,eclipse" />
   <project path="prebuilts/eclipse-build-deps-sources" name="platform/prebuilts/eclipse-build-deps-sources" groups="notdefault,eclipse" />
-  <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.6" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.6" groups="darwin,arm" />
-  <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" groups="darwin,arm" />
-  <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" groups="darwin,arm" />
-  <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" groups="darwin,arm" />
-  <project path="prebuilts/gcc/darwin-x86/host/headers" name="platform/prebuilts/gcc/darwin-x86/host/headers" groups="darwin" />
-  <project path="prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" name="platform/prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" groups="darwin" />
-  <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" groups="darwin,mips" />
-  <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" groups="darwin,mips" />
-  <project path="prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.6" name="platform/prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.6" groups="darwin,x86" />
-  <project path="prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.7" name="platform/prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.7" groups="darwin,x86" />
-  <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.6" name="platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6" groups="linux,arm" />
-  <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.7" name="platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.7" groups="linux,arm" />
-  <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.6" name="platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.6" groups="linux,arm" />
-  <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.7" name="platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.7" groups="linux,arm" />
-  <project path="prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.4.3" name="platform/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.4.3" groups="linux" />
-  <project path="prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6" name="platform/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6" groups="linux" />
-  <project path="prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6" name="platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6" groups="linux" />
-  <project path="prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.6" name="platform/prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.6" groups="linux,mips" />
-  <project path="prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.7" name="platform/prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.7" groups="linux,mips" />
-  <project path="prebuilts/gcc/linux-x86/x86/i686-linux-android-4.6" name="platform/prebuilts/gcc/linux-x86/x86/i686-linux-android-4.6" groups="linux,x86" />
-  <project path="prebuilts/gcc/linux-x86/x86/i686-linux-android-4.7" name="platform/prebuilts/gcc/linux-x86/x86/i686-linux-android-4.7" groups="linux,x86" />
-  <project path="prebuilts/misc" name="platform/prebuilts/misc" />
-  <project path="prebuilts/ndk" name="platform/prebuilts/ndk" />
-  <project path="prebuilts/qemu-kernel" name="platform/prebuilts/qemu-kernel" />
-  <project path="prebuilts/sdk" name="platform/prebuilts/sdk" />
-  <project path="prebuilts/tools" name="platform/prebuilts/tools" />
+  <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.6" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.6" groups="pdk,darwin,arm" />
+  <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" groups="pdk,darwin,arm" />
+  <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" groups="pdk,darwin,arm" />
+  <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" groups="pdk,darwin,arm" />
+  <project path="prebuilts/gcc/darwin-x86/host/headers" name="platform/prebuilts/gcc/darwin-x86/host/headers" groups="pdk,darwin" />
+  <project path="prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" name="platform/prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" groups="pdk,darwin" />
+  <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" groups="pdk,darwin,mips" />
+  <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" groups="pdk,darwin,mips" />
+  <project path="prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.6" name="platform/prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.6" groups="pdk,darwin,x86" />
+  <project path="prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.7" name="platform/prebuilts/gcc/darwin-x86/x86/i686-linux-android-4.7" groups="pdk,darwin,x86" />
+  <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.6" name="platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6" groups="pdk,linux,arm" />
+  <project path="prebuilts/gcc/linux-x86/arm/arm-eabi-4.7" name="platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.7" groups="pdk,linux,arm" />
+  <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.6" name="platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.6" groups="pdk,linux,arm" />
+  <project path="prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.7" name="platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.7" groups="pdk,linux,arm" />
+  <project path="prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.4.3" name="platform/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.4.3" groups="pdk,linux" />
+  <project path="prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6" name="platform/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6" groups="pdk,linux" />
+  <project path="prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6" name="platform/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.7-4.6" groups="pdk,linux" />
+  <project path="prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.6" name="platform/prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.6" groups="pdk,linux,mips" />
+  <project path="prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.7" name="platform/prebuilts/gcc/linux-x86/mips/mipsel-linux-android-4.7" groups="pdk,linux,mips" />
+  <project path="prebuilts/gcc/linux-x86/x86/i686-linux-android-4.6" name="platform/prebuilts/gcc/linux-x86/x86/i686-linux-android-4.6" groups="pdk,linux,x86" />
+  <project path="prebuilts/gcc/linux-x86/x86/i686-linux-android-4.7" name="platform/prebuilts/gcc/linux-x86/x86/i686-linux-android-4.7" groups="pdk,linux,x86" />
+  <project path="prebuilts/misc" name="platform/prebuilts/misc" groups="pdk" />
+  <project path="prebuilts/ndk" name="platform/prebuilts/ndk" groups="pdk" />
+  <project path="prebuilts/qemu-kernel" name="platform/prebuilts/qemu-kernel" groups="pdk" />
+  <project path="prebuilts/sdk" name="platform/prebuilts/sdk" groups="pdk" />
+  <project path="prebuilts/tools" name="platform/prebuilts/tools" groups="pdk" />
   <project path="sdk" name="platform/sdk" />
-  <project path="system/bluetooth" name="platform/system/bluetooth" />
-  <project path="system/core" name="platform/system/core" />
-  <project path="system/extras" name="platform/system/extras" />
-  <project path="system/media" name="platform/system/media" />
-  <project path="system/netd" name="platform/system/netd" />
-  <project path="system/security" name="platform/system/security" />
-  <project path="system/vold" name="platform/system/vold" />
+  <project path="system/bluetooth" name="platform/system/bluetooth" groups="pdk" />
+  <project path="system/core" name="platform/system/core" groups="pdk" />
+  <project path="system/extras" name="platform/system/extras" groups="pdk" />
+  <project path="system/media" name="platform/system/media" groups="pdk" />
+  <project path="system/netd" name="platform/system/netd" groups="pdk" />
+  <project path="system/security" name="platform/system/security" groups="pdk" />
+  <project path="system/vold" name="platform/system/vold" groups="pdk" />
+  <project path="tools/adt/eclipse" name="platform/tools/adt/eclipse" groups="notdefault,tools" />
   <project path="tools/base" name="platform/tools/base" groups="notdefault,tools" />
   <project path="tools/build" name="platform/tools/build" groups="notdefault,tools" />
+  <project path="tools/emulator" name="platform/tools/emulator" groups="notdefault,tools" />
   <project path="tools/external/gradle" name="platform/tools/external/gradle" groups="notdefault,tools" />
   <project path="tools/motodev" name="platform/tools/motodev" groups="notdefault,motodev" />
   <project path="tools/swt" name="platform/tools/swt" groups="notdefault,tools" />