diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 6ae8bd5..460a090 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -245,6 +245,8 @@
 LOCAL_SOONG_PROGUARD_DICT :=
 LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE :=
 LOCAL_SOONG_RRO_DIRS :=
+LOCAL_DROIDDOC_STUBS_JAR :=
+LOCAL_DROIDDOC_DOC_ZIP :=
 # '',true
 LOCAL_SOURCE_FILES_ALL_GENERATED:=
 LOCAL_SRC_FILES:=
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 153b741..bf5034b 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -42,6 +42,9 @@
 
 $(call add_json_str,  Make_suffix, -$(TARGET_PRODUCT))
 
+$(call add_json_str,  BuildId,                           $(BUILD_ID))
+$(call add_json_str,  BuildNumberFromFile,               $$$(BUILD_NUMBER_FROM_FILE))
+
 $(call add_json_val,  Platform_sdk_version,              $(PLATFORM_SDK_VERSION))
 $(call add_json_csv,  Platform_version_active_codenames, $(PLATFORM_VERSION_ALL_CODENAMES))
 $(call add_json_csv,  Platform_version_future_codenames, $(PLATFORM_VERSION_FUTURE_CODENAMES))
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index f3ed376..f10da32 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -23,6 +23,15 @@
 $(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(full_classes_jar)))
 $(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(full_classes_pre_proguard_jar)))
 
+ifdef LOCAL_DROIDDOC_STUBS_JAR
+$(eval $(call copy-one-file,$(LOCAL_DROIDDOC_STUBS_JAR),$(OUT_DOCS)/$(LOCAL_MODULE)-stubs.jar))
+ALL_DOCS += $(OUT_DOCS)/$(LOCAL_MODULE)-stubs.jar
+endif
+
+ifdef LOCAL_DROIDDOC_DOC_ZIP
+$(eval $(call copy-one-file,$(LOCAL_DROIDDOC_DOC_ZIP),$(OUT_DOCS)/$(LOCAL_MODULE)-docs.zip))
+endif
+
 ifdef LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR
   $(eval $(call copy-one-file,$(LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR),\
     $(intermediates.COMMON)/jacoco-report-classes.jar))