diff --git a/core/apidiff.mk b/core/apidiff.mk
index 42a1d34..6fd94a2 100644
--- a/core/apidiff.mk
+++ b/core/apidiff.mk
@@ -58,8 +58,13 @@
     $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, android_test_stubs_current)
   else
     ifneq (,$(call has-system-sdk-version,$(LOCAL_SDK_VERSION)))
-      LOCAL_JAVA_LIBRARIES := system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)) $(LOCAL_JAVA_LIBRARIES)
-      $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+      ifeq (,$(TARGET_BUILD_APPS))
+        LOCAL_JAVA_LIBRARIES := system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)) $(LOCAL_JAVA_LIBRARIES)
+        $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+      else
+        LOCAL_JAVA_LIBRARIES := sdk_v$(LOCAL_SDK_VERSION) $(LOCAL_JAVA_LIBRARIES)
+        $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, sdk_v$(LOCAL_SDK_VERSION))
+      endif
     else
       LOCAL_JAVA_LIBRARIES := sdk_v$(LOCAL_SDK_VERSION) $(LOCAL_JAVA_LIBRARIES)
       $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, sdk_v$(LOCAL_SDK_VERSION))
diff --git a/core/droiddoc.mk b/core/droiddoc.mk
index 778a631..c8d0dc8 100644
--- a/core/droiddoc.mk
+++ b/core/droiddoc.mk
@@ -73,8 +73,13 @@
     $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, android_test_stubs_current)
   else
     ifneq (,$(call has-system-sdk-version,$(LOCAL_SDK_VERSION)))
-      LOCAL_JAVA_LIBRARIES := system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)) $(LOCAL_JAVA_LIBRARIES)
-      $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+      ifeq (,$(TARGET_BUILD_APPS))
+        LOCAL_JAVA_LIBRARIES := system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)) $(LOCAL_JAVA_LIBRARIES)
+        $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+      else
+        LOCAL_JAVA_LIBRARIES := sdk_v$(LOCAL_SDK_VERSION) $(LOCAL_JAVA_LIBRARIES)
+        $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, sdk_v$(LOCAL_SDK_VERSION))
+      endif
     else
       LOCAL_JAVA_LIBRARIES := sdk_v$(LOCAL_SDK_VERSION) $(LOCAL_JAVA_LIBRARIES)
       $(full_target): PRIVATE_BOOTCLASSPATH := $(call java-lib-files, sdk_v$(LOCAL_SDK_VERSION))
diff --git a/core/java_common.mk b/core/java_common.mk
index 59c5e34..a90c779 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -230,7 +230,11 @@
       full_java_bootclasspath_libs := $(call java-lib-header-files,android_test_stubs_current)
     else
       ifneq (,$(call has-system-sdk-version,$(LOCAL_SDK_VERSION)))
-        full_java_bootclasspath_libs := $(call java-lib-header-files,system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+        ifeq (,$(TARGET_BUILD_APPS))
+          full_java_bootclasspath_libs := $(call java-lib-header-files,system_sdk_v$(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION)))
+        else
+          full_java_bootclasspath_libs := $(call java-lib-header-files,sdk_v$(LOCAL_SDK_VERSION))
+        endif
       else
         full_java_bootclasspath_libs := $(call java-lib-header-files,sdk_v$(LOCAL_SDK_VERSION))
       endif