diff --git a/core/aapt2.mk b/core/aapt2.mk
index c582e30df..895bd371f 100644
--- a/core/aapt2.mk
+++ b/core/aapt2.mk
@@ -12,6 +12,7 @@
 # - proguard_options_file
 # - my_generated_res_dirs: Resources generated during the build process and we have to compile them in a single run of aapt2.
 # - my_generated_res_dirs_deps: the dependency to use for my_generated_res_dirs.
+# - my_generated_res_zips: Zip files containing resources
 # - my_apk_split_configs: The configurations for which to generate splits.
 # - built_apk_splits: The paths where AAPT should generate the splits.
 #
@@ -35,7 +36,7 @@ my_overlay_resources_flat := \
     $(eval $(call aapt2-compile-one-resource-file-rule,$(r),$(o)))\
     $(o))
 
-my_generated_resources_flata :=
+my_resources_flata :=
 # Compile generated resources
 ifneq ($(my_generated_res_dirs),)
 my_generated_resources_flata := $(my_compiled_res_base_dir)/gen_res.flata
@@ -44,12 +45,23 @@ $(my_generated_resources_flata) : $(my_generated_res_dirs_deps) $(AAPT2)
 	@echo "AAPT2 compile $@ <- $(PRIVATE_SOURCE_RES_DIRS)"
 	$(call aapt2-compile-resource-dirs)
 
-my_generated_resources_flata += $(my_generated_resources_flata)
+my_resources_flata += $(my_generated_resources_flata)
+endif
+
+# Compile zipped resources
+ifneq ($(my_generated_res_zips),)
+my_zipped_resources_flata := $(my_compiled_res_base_dir)/zip_res.flata
+$(my_zipped_resources_flata): PRIVATE_SOURCE_RES_ZIPS := $(my_generated_res_zips)
+$(my_zipped_resources_flata) : $(my_generated_res_deps) $(AAPT2) $(EXTRACT_SRCJARS)
+	@echo "AAPT2 compile $@ <- $(PRIVATE_SOURCE_RES_ZIPS)"
+	$(call aapt2-compile-resource-zips)
+
+my_resources_flata += $(my_zipped_resources_flata)
 endif
 
 # Always set --pseudo-localize, it will be stripped out later for release
 # builds that don't want it.
-$(my_res_resources_flat) $(my_overlay_resources_flat) $(my_generated_resources_flata): \
+$(my_res_resources_flat) $(my_overlay_resources_flat) $(my_resources_flata): \
   PRIVATE_AAPT2_CFLAGS := --pseudo-localize
 
 my_static_library_resources := $(foreach l, $(call reverse-list,$(LOCAL_STATIC_ANDROID_LIBRARIES)),\
@@ -67,7 +79,7 @@ $(my_res_package): PRIVATE_AAPT_FLAGS += $(addprefix --split ,$(join $(built_apk
 endif
 
 $(my_res_package): PRIVATE_RES_FLAT := $(my_res_resources_flat)
-$(my_res_package): PRIVATE_OVERLAY_FLAT := $(my_static_library_resources) $(my_generated_resources_flata) $(my_overlay_resources_flat)
+$(my_res_package): PRIVATE_OVERLAY_FLAT := $(my_static_library_resources) $(my_resources_flata) $(my_overlay_resources_flat)
 $(my_res_package): PRIVATE_SHARED_ANDROID_LIBRARIES := $(my_shared_library_resources)
 $(my_res_package): PRIVATE_PROGUARD_OPTIONS_FILE := $(proguard_options_file)
 $(my_res_package): PRIVATE_ASSET_DIRS := $(my_asset_dirs)
@@ -95,7 +107,7 @@ endif
 $(my_res_package): $(full_android_manifest) $(my_static_library_resources) $(my_shared_library_resources)
 $(my_res_package): $(my_full_asset_paths)
 $(my_res_package): $(my_res_resources_flat) $(my_overlay_resources_flat) \
-  $(my_generated_resources_flata) $(my_static_library_resources) \
+  $(my_resources_flata) $(my_static_library_resources) \
   $(AAPT2)
 	@echo "AAPT2 link $@"
 	$(call aapt2-link)
@@ -118,3 +130,4 @@ my_full_asset_paths :=
 my_apk_split_configs :=
 my_generated_res_dirs :=
 my_generated_res_dirs_deps :=
+my_generated_res_zips :=
diff --git a/core/aapt_flags.mk b/core/aapt_flags.mk
new file mode 100644
index 000000000..4e3493aff
--- /dev/null
+++ b/core/aapt_flags.mk
@@ -0,0 +1,20 @@
+## AAPT Flags
+# aapt doesn't accept multiple --extra-packages flags.
+# We have to collapse them into a single --extra-packages flag here.
+LOCAL_AAPT_FLAGS := $(strip $(LOCAL_AAPT_FLAGS))
+ifdef LOCAL_AAPT_FLAGS
+  ifeq ($(filter 0 1,$(words $(filter --extra-packages,$(LOCAL_AAPT_FLAGS)))),)
+    aapt_flags := $(subst --extra-packages$(space),--extra-packages@,$(LOCAL_AAPT_FLAGS))
+    aapt_flags_extra_packages := $(patsubst --extra-packages@%,%,$(filter --extra-packages@%,$(aapt_flags)))
+    aapt_flags_extra_packages := $(sort $(subst :,$(space),$(aapt_flags_extra_packages)))
+    LOCAL_AAPT_FLAGS := $(filter-out --extra-packages@%,$(aapt_flags)) \
+        --extra-packages $(subst $(space),:,$(aapt_flags_extra_packages))
+    aapt_flags_extra_packages :=
+    aapt_flags :=
+  endif
+endif
+
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index a9b65d0b2..d1ba354b5 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -126,7 +126,6 @@ LOCAL_JAR_PACKAGES:=
 LOCAL_JAR_PROCESSOR:=
 LOCAL_JAR_PROCESSOR_ARGS:=
 LOCAL_JAVACFLAGS:=
-LOCAL_JAVAC_SHARD_SIZE:=
 LOCAL_JAVA_LANGUAGE_VERSION:=
 LOCAL_JAVA_LAYERS_FILE:=
 LOCAL_JAVA_LIBRARIES:=
diff --git a/core/definitions.mk b/core/definitions.mk
index b0b92de75..b0dcb0145 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2079,6 +2079,15 @@ $(hide) $(AAPT2) compile -o $@ $(addprefix --dir ,$(PRIVATE_SOURCE_RES_DIRS)) \
   $(PRIVATE_AAPT2_CFLAGS) --legacy
 endef
 
+# TODO(b/74574557): use aapt2 compile --zip if it gets implemented
+define aapt2-compile-resource-zips
+@mkdir -p $(dir $@)
+rm -rf $@.contents
+mkdir -p $@.contents
+$(EXTRACT_SRCJARS) $@.contents $@.list $(PRIVATE_SOURCE_RES_ZIPS)
+$(hide) $(AAPT2) compile -o $@ --dir $@.tmp $(PRIVATE_AAPT2_CFLAGS) --legacy
+endef
+
 # Set up rule to compile one resource file with aapt2.
 # Must be called with $(eval).
 # $(1): the source file
@@ -2222,25 +2231,17 @@ $(call fetch-additional-java-source,$@.tmp)
 $(hide) tr ' ' '\n' < $@.tmp | $(NORMALIZE_PATH) | sort -u > $@
 endef
 
-# $(1): sharding number.
-# $(2): Java source files paths.
-define save-sharded-java-source-list
-$(java_source_list_file).shard.$(1): $(2) $$(NORMALIZE_PATH)
-	@echo "shard java source list: $$@"
-	rm -f $$@
-	$$(call dump-words-to-file,$(2),$$@.tmp)
-	$(hide) tr ' ' '\n' < $$@.tmp | $$(NORMALIZE_PATH) | sort -u > $$@
-endef
-
 # Common definition to invoke javac on the host and target.
 #
 # $(1): javac
 # $(2): classpath_libs
 define compile-java
 $(hide) rm -f $@
-$(hide) rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR)
+$(hide) rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR) $(if $(PRIVATE_SRCJARS),$(PRIVATE_SRCJAR_INTERMEDIATES_DIR))
 $(hide) mkdir -p $(dir $@)
-$(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR)
+$(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR) $(if $(PRIVATE_SRCJARS),$(PRIVATE_SRCJAR_INTERMEDIATES_DIR))
+$(if $(PRIVATE_SRCJARS),\
+    $(EXTRACT_SRCJARS) $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) $(PRIVATE_SRCJAR_LIST_FILE) $(PRIVATE_SRCJARS))
 $(hide) if [ -s $(PRIVATE_JAVA_SOURCE_LIST) ] ; then \
     $(SOONG_JAVAC_WRAPPER) $(JAVAC_WRAPPER) $(1) -encoding UTF-8 \
     $(if $(findstring true,$(PRIVATE_WARNINGS_ENABLE)),$(xlint_unchecked),) \
@@ -2260,6 +2261,7 @@ $(hide) if [ -s $(PRIVATE_JAVA_SOURCE_LIST) ] ; then \
     -d $(PRIVATE_CLASS_INTERMEDIATES_DIR) -s $(PRIVATE_ANNO_INTERMEDIATES_DIR) \
     $(PRIVATE_JAVACFLAGS) \
     \@$(PRIVATE_JAVA_SOURCE_LIST) \
+    $(if $(PRIVATE_SRCJARS),\@$(PRIVATE_SRCJAR_LIST_FILE)) \
     || ( rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) ; exit 41 ) \
 fi
 $(if $(PRIVATE_JAVA_LAYERS_FILE), $(hide) build/make/tools/java-layers.py \
@@ -2280,36 +2282,6 @@ $(hide) $(JAR) -cf $@ $(call jar-args-sorted-files-in-directory,$(PRIVATE_CLASS_
 $(if $(PRIVATE_EXTRA_JAR_ARGS),$(call add-java-resources-to,$@))
 endef
 
-# $(1): Javac output jar name.
-# $(2): Java source list file.
-# $(3): Java header libs.
-# $(4): Javac sharding number.
-# $(5): Javac sources deps (the arg may neeed $$ in case of containing '#')
-define create-classes-full-debug.jar
-$(1): PRIVATE_JAVACFLAGS := $$(LOCAL_JAVACFLAGS) $$(annotation_processor_flags)
-$(1): PRIVATE_JAR_EXCLUDE_FILES := $$(LOCAL_JAR_EXCLUDE_FILES)
-$(1): PRIVATE_JAR_PACKAGES := $$(LOCAL_JAR_PACKAGES)
-$(1): PRIVATE_JAR_EXCLUDE_PACKAGES := $$(LOCAL_JAR_EXCLUDE_PACKAGES)
-$(1): PRIVATE_DONT_DELETE_JAR_META_INF := $$(LOCAL_DONT_DELETE_JAR_META_INF)
-$(1): PRIVATE_JAVA_SOURCE_LIST := $(2)
-$(1): PRIVATE_ALL_JAVA_HEADER_LIBRARIES := $(3)
-$(1): PRIVATE_CLASS_INTERMEDIATES_DIR := $(intermediates.COMMON)/classes$(4)
-$(1): PRIVATE_ANNO_INTERMEDIATES_DIR := $(intermediates.COMMON)/anno$(4)
-$(1): \
-    $(2) \
-    $(3) \
-    $(5) \
-    $$(full_java_bootclasspath_libs) \
-    $$(full_java_system_modules_deps) \
-    $$(layers_file) \
-    $$(annotation_processor_deps) \
-    $$(NORMALIZE_PATH) \
-    $$(JAR_ARGS) \
-    | $$(SOONG_JAVAC_WRAPPER)
-	@echo "Target Java: $$@ ($$(PRIVATE_CLASS_INTERMEDIATES_DIR))"
-	$$(call compile-java,$$(TARGET_JAVAC),$$(PRIVATE_ALL_JAVA_HEADER_LIBRARIES))
-endef
-
 define transform-java-to-header.jar
 @echo "$($(PRIVATE_PREFIX)DISPLAY) Turbine: $(PRIVATE_MODULE)"
 @mkdir -p $(dir $@)
@@ -2318,7 +2290,7 @@ define transform-java-to-header.jar
 $(hide) if [ -s $(PRIVATE_JAVA_SOURCE_LIST) ] ; then \
     $(JAVA) -jar $(TURBINE) \
     --output $@.premerged --temp_dir $(dir $@)/classes-turbine \
-    --sources \@$(PRIVATE_JAVA_SOURCE_LIST) \
+    --sources \@$(PRIVATE_JAVA_SOURCE_LIST) --source_jars $(PRIVATE_SRCJARS) \
     --javacopts $(PRIVATE_JAVACFLAGS) $(COMMON_JDK_FLAGS) \
     $(addprefix --bootclasspath ,$(strip \
          $(call normalize-path-list,$(PRIVATE_BOOTCLASSPATH)) \
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 20663d159..fc5b75c0c 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -76,6 +76,7 @@ java_sources_deps := \
     $(java_sources) \
     $(java_resource_sources) \
     $(proto_java_sources_file_stamp) \
+    $(LOCAL_SRCJARS) \
     $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 $(java_source_list_file): $(java_sources_deps)
@@ -86,6 +87,9 @@ $(full_classes_compiled_jar): PRIVATE_JAVACFLAGS := $(LOCAL_JAVACFLAGS) $(annota
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES :=
+$(full_classes_compiled_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_LIST_FILE := $(intermediates.COMMON)/srcjar-list
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_INTERMEDIATES_DIR := $(intermediates.COMMON)/srcjars
 $(full_classes_compiled_jar): \
     $(java_source_list_file) \
     $(java_sources_deps) \
@@ -95,6 +99,7 @@ $(full_classes_compiled_jar): \
     $(annotation_processor_deps) \
     $(NORMALIZE_PATH) \
     $(JAR_ARGS) \
+    $(EXTRACT_SRCJARS) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-dalvik-package)
 
@@ -102,6 +107,7 @@ ifneq ($(TURBINE_ENABLED),false)
 
 $(full_classes_turbine_jar): PRIVATE_JAVACFLAGS := $(LOCAL_JAVACFLAGS) $(annotation_processor_flags)
 $(full_classes_turbine_jar): PRIVATE_DONT_DELETE_JAR_META_INF := $(LOCAL_DONT_DELETE_JAR_META_INF)
+$(full_classes_turbine_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
 $(full_classes_turbine_jar): \
     $(java_source_list_file) \
     $(java_sources_deps) \
diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index 5176f37d6..47a8b02df 100644
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -63,6 +63,7 @@ java_sources_deps := \
     $(java_sources) \
     $(java_resource_sources) \
     $(proto_java_sources_file_stamp) \
+    $(LOCAL_SRCJARS) \
     $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 $(java_source_list_file): $(java_sources_deps)
@@ -73,6 +74,9 @@ $(full_classes_compiled_jar): PRIVATE_JAVACFLAGS := $(LOCAL_JAVACFLAGS) $(annota
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES :=
 $(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES :=
+$(full_classes_compiled_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_LIST_FILE := $(intermediates.COMMON)/srcjar-list
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_INTERMEDIATES_DIR := $(intermediates.COMMON)/srcjars
 $(full_classes_compiled_jar): \
     $(java_source_list_file) \
     $(java_sources_deps) \
@@ -82,6 +86,7 @@ $(full_classes_compiled_jar): \
     $(NORMALIZE_PATH) \
     $(ZIPTIME) \
     $(JAR_ARGS) \
+    $(EXTRACT_SRCJARS) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-package)
 	$(remove-timestamps-from-package)
diff --git a/core/java.mk b/core/java.mk
index 097f52c93..907825c1f 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -108,9 +108,8 @@ LOCAL_INTERMEDIATE_SOURCE_DIR := $(intermediates.COMMON)/src
 
 ###############################################################
 ## .rs files: RenderScript sources to .java files and .bc files
-## .fs files: Filterscript sources to .java files and .bc files
 ###############################################################
-renderscript_sources := $(filter %.rs %.fs,$(LOCAL_SRC_FILES))
+renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
 # Because names of the java files from RenderScript are unknown until the
 # .rs file(s) are compiled, we have to depend on a timestamp file.
 RenderScript_file_stamp :=
@@ -171,7 +170,7 @@ ifneq ($(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE),)
 LOCAL_RENDERSCRIPT_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE)
 endif
 
-bc_files := $(patsubst %.fs,%.bc, $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources))))
+bc_files := $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources)))
 bc_dep_files := $(addprefix $(renderscript_intermediate.COMMON)/,$(patsubst %.bc,%.d,$(bc_files)))
 
 $(RenderScript_file_stamp): PRIVATE_RS_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES)
@@ -331,34 +330,6 @@ java_sources := $(addprefix $(LOCAL_PATH)/, $(filter %.java,$(LOCAL_SRC_FILES)))
 java_intermediate_sources := $(addprefix $(TARGET_OUT_COMMON_INTERMEDIATES)/, $(filter %.java,$(LOCAL_INTERMEDIATE_SOURCES)))
 all_java_sources := $(java_sources) $(java_intermediate_sources)
 
-enable_sharding :=
-ifneq ($(TURBINE_ENABLED),false)
-ifneq ($(LOCAL_JAVAC_SHARD_SIZE),)
-ifneq ($(LOCAL_JAR_PROCESSOR),)
-$(call pretty-error,Cannot set both LOCAL_JAVAC_SHARD_SIZE and LOCAL_JAR_PROCESSOR!)
-endif # LOCAL_JAR_PROCESSOR is not empty
-enable_sharding := true
-
-num_shards := $(call int_divide,$(words $(java_sources)),$(LOCAL_JAVAC_SHARD_SIZE))
-ifneq ($(words $(java_sources)),$(call int_multiply,$(LOCAL_JAVAC_SHARD_SIZE),$(num_shards)))
-# increment number of shards by 1.
-num_shards := $(call int_plus,$(num_shards),1)
-endif
-
-shard_idx_list := $(call int_range_list,1,$(num_shards))
-sharded_java_source_list_files += $(foreach x,$(shard_idx_list),$(java_source_list_file).shard.$(x))
-sharded_jar_list += $(foreach x,$(shard_idx_list),$(full_classes_compiled_jar).shard.$(x))
-
-# always put dynamically-located .java files (generated by Proto/resource, etc) in a new final shard.
-# increment number of shards by 1.
-num_shards := $(call int_plus,$(num_shards),1)
-sharded_java_source_list_files += $(java_source_list_file).shard.$(num_shards)
-sharded_jar_list += $(full_classes_compiled_jar).shard.$(num_shards)
-LOCAL_INTERMEDIATE_TARGETS += $(sharded_java_source_list_files)
-LOCAL_INTERMEDIATE_TARGETS += $(sharded_jar_list)
-endif # LOCAL_JAVAC_SHARD_SIZE is not empty
-endif # TURBINE_ENABLED != false
-
 include $(BUILD_SYSTEM)/java_common.mk
 
 include $(BUILD_SYSTEM)/sdk_check.mk
@@ -434,56 +405,16 @@ java_sources_deps := \
     $(java_resource_sources) \
     $(RenderScript_file_stamp) \
     $(proto_java_sources_file_stamp) \
+    $(LOCAL_SRCJARS) \
     $(LOCAL_ADDITIONAL_DEPENDENCIES)
 
 $(java_source_list_file): $(java_sources_deps)
 	$(write-java-source-list)
 
-ifdef enable_sharding
-$(foreach x,$(shard_idx_list),\
-  $(eval $(call save-sharded-java-source-list,$(x),\
-    $(wordlist $(call int_plus,1,$(call int_multiply,$(LOCAL_JAVAC_SHARD_SIZE),$(call int_subtract,$(x),1))),\
-      $(call int_multiply,$(LOCAL_JAVAC_SHARD_SIZE),$(x)),$(sort $(java_sources))))))
-
-# always put dynamically-located .java files (generated by Proto/resource, etc) in a new final shard.
-$(java_source_list_file).shard.$(num_shards): PRIVATE_JAVA_INTERMEDIATE_SOURCES := $(java_intermediate_sources)
-$(java_source_list_file).shard.$(num_shards): $(java_resource_sources) \
-    $(RenderScript_file_stamp) \
-    $(proto_java_sources_file_stamp) \
-    $(LOCAL_ADDITIONAL_DEPENDENCIES) \
-    $(NORMALIZE_PATH)
-	$(hide) rm -f $@
-	$(call dump-words-to-file,$(PRIVATE_JAVA_INTERMEDIATE_SOURCES),$@.tmp)
-	$(call fetch-additional-java-source,$@.tmp)
-	$(hide) tr ' ' '\n' < $@.tmp | $(NORMALIZE_PATH) | sort -u > $@
-
-# Javac sharding with header libs including its own header jar as one of dependency.
-$(foreach x,$(shard_idx_list),\
-  $(eval $(call create-classes-full-debug.jar,$(full_classes_compiled_jar).shard.$(x),\
-    $(java_source_list_file).shard.$(x),\
-      $(full_java_header_libs) $(full_classes_header_jar),$(x),\
-        $(wordlist $(call int_plus,1,$(call int_multiply,$(LOCAL_JAVAC_SHARD_SIZE),$(call int_subtract,$(x),1))),\
-          $(call int_multiply,$(LOCAL_JAVAC_SHARD_SIZE),$(x)),$(sort $(java_sources))))))
-
-# Javac sharding for last shard with additional Java dependencies.
-$(eval $(call create-classes-full-debug.jar,$(full_classes_compiled_jar).shard.$(num_shards),\
-  $(java_source_list_file).shard.$(num_shards),$(full_java_header_libs) $(full_classes_header_jar),$(strip \
-    $(num_shards)),$$(java_resource_sources) $$(RenderScript_file_stamp) \
-      $$(proto_java_sources_file_stamp) $$(LOCAL_ADDITIONAL_DEPENDENCIES)))
-
-$(full_classes_compiled_jar): PRIVATE_SHARDED_JAR_LIST := $(sharded_jar_list)
-$(full_classes_compiled_jar): $(sharded_jar_list) | $(MERGE_ZIPS)
-	$(MERGE_ZIPS) -j $@ $(PRIVATE_SHARDED_JAR_LIST)
-else
-# we can't use single $ for java_sources_deps since it may contain hash '#' sign.
-$(eval $(call create-classes-full-debug.jar,$(full_classes_compiled_jar),\
-  $(java_source_list_file),$(full_java_header_libs),,$$(java_sources_deps)))
-
-endif # ifdef enable_sharding
-
 ifneq ($(TURBINE_ENABLED),false)
 
 $(full_classes_turbine_jar): PRIVATE_JAVACFLAGS := $(LOCAL_JAVACFLAGS) $(annotation_processor_flags)
+$(full_classes_turbine_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
 $(full_classes_turbine_jar): PRIVATE_DONT_DELETE_JAR_META_INF := $(LOCAL_DONT_DELETE_JAR_META_INF)
 $(full_classes_turbine_jar): \
     $(java_source_list_file) \
@@ -514,6 +445,31 @@ $(eval $(call copy-one-file,$(full_classes_header_jarjar),$(full_classes_header_
 
 endif # TURBINE_ENABLED != false
 
+$(full_classes_compiled_jar): PRIVATE_JAVACFLAGS := $(LOCAL_JAVACFLAGS) $(annotation_processor_flags)
+$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_FILES := $(LOCAL_JAR_EXCLUDE_FILES)
+$(full_classes_compiled_jar): PRIVATE_JAR_PACKAGES := $(LOCAL_JAR_PACKAGES)
+$(full_classes_compiled_jar): PRIVATE_JAR_EXCLUDE_PACKAGES := $(LOCAL_JAR_EXCLUDE_PACKAGES)
+$(full_classes_compiled_jar): PRIVATE_DONT_DELETE_JAR_META_INF := $(LOCAL_DONT_DELETE_JAR_META_INF)
+$(full_classes_compiled_jar): PRIVATE_JAVA_SOURCE_LIST := $(java_source_list_file)
+$(full_classes_compiled_jar): PRIVATE_ALL_JAVA_HEADER_LIBRARIES := $(full_java_header_libs)
+$(full_classes_compiled_jar): PRIVATE_SRCJARS := $(LOCAL_SRCJARS)
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_LIST_FILE := $(intermediates.COMMON)/srcjar-list
+$(full_classes_compiled_jar): PRIVATE_SRCJAR_INTERMEDIATES_DIR := $(intermediates.COMMON)/srcjars
+$(full_classes_compiled_jar): \
+    $(java_source_list_file) \
+    $(full_java_header_libs) \
+    $(java_sources_deps) \
+    $(full_java_bootclasspath_libs) \
+    $(full_java_system_modules_deps) \
+    $(layers_file) \
+    $(annotation_processor_deps) \
+    $(NORMALIZE_PATH) \
+    $(JAR_ARGS) \
+    $(EXTRACT_SRCJARS) \
+    | $(SOONG_JAVAC_WRAPPER)
+	@echo "Target Java: $@
+	$(call compile-java,$(TARGET_JAVAC),$(PRIVATE_ALL_JAVA_HEADER_LIBRARIES))
+
 javac-check : $(full_classes_compiled_jar)
 javac-check-$(LOCAL_MODULE) : $(full_classes_compiled_jar)
 
diff --git a/core/java_common.mk b/core/java_common.mk
index b94effaa9..dea0435dc 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -177,7 +177,7 @@ endif # java_resource_file_groups
 #####################################
 ## Warn if there is unrecognized file in LOCAL_SRC_FILES.
 my_unknown_src_files := $(filter-out \
-  %.java %.aidl %.proto %.logtags %.fs %.rs, \
+  %.java %.aidl %.proto %.logtags %.rs, \
   $(LOCAL_SRC_FILES) $(LOCAL_INTERMEDIATE_SOURCES) $(LOCAL_GENERATED_SOURCES))
 ifneq ($(my_unknown_src_files),)
 $(warning $(LOCAL_MODULE_MAKEFILE): $(LOCAL_MODULE): Unused source files: $(my_unknown_src_files))
@@ -188,7 +188,7 @@ endif
 # LOCAL_SOURCE_FILES_ALL_GENERATED is set only if the module does not have static source files,
 # but generated source files in its LOCAL_INTERMEDIATE_SOURCE_DIR.
 # You have to set up the dependency in some other way.
-need_compile_java := $(strip $(all_java_sources)$(all_res_assets)$(java_resource_sources))$(LOCAL_STATIC_JAVA_LIBRARIES)$(filter true,$(LOCAL_SOURCE_FILES_ALL_GENERATED))
+need_compile_java := $(strip $(all_java_sources)$(LOCAL_SRCJARS)$(all_res_assets)$(java_resource_sources))$(LOCAL_STATIC_JAVA_LIBRARIES)$(filter true,$(LOCAL_SOURCE_FILES_ALL_GENERATED))
 ifdef need_compile_java
 
 annotation_processor_flags :=
@@ -411,35 +411,6 @@ $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_JAR_MANIFEST :=
 endif
 
 ##########################################################
-ifndef LOCAL_IS_HOST_MODULE
-## AAPT Flags
-# aapt doesn't accept multiple --extra-packages flags.
-# We have to collapse them into a single --extra-packages flag here.
-LOCAL_AAPT_FLAGS := $(strip $(LOCAL_AAPT_FLAGS))
-ifdef LOCAL_AAPT_FLAGS
-ifeq ($(filter 0 1,$(words $(filter --extra-packages,$(LOCAL_AAPT_FLAGS)))),)
-aapt_flags := $(subst --extra-packages$(space),--extra-packages@,$(LOCAL_AAPT_FLAGS))
-aapt_flags_extra_packages := $(patsubst --extra-packages@%,%,$(filter --extra-packages@%,$(aapt_flags)))
-aapt_flags_extra_packages := $(sort $(subst :,$(space),$(aapt_flags_extra_packages)))
-LOCAL_AAPT_FLAGS := $(filter-out --extra-packages@%,$(aapt_flags)) \
-    --extra-packages $(subst $(space),:,$(aapt_flags_extra_packages))
-aapt_flags_extra_packages :=
-aapt_flags :=
-endif
-endif
-
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
-
-ifdef aidl_sources
-ALL_MODULES.$(my_register_name).AIDL_FILES := $(aidl_sources)
-endif
-ifdef renderscript_sources
-ALL_MODULES.$(my_register_name).RS_FILES := $(renderscript_sources_fullpath)
-endif
-endif  # !LOCAL_IS_HOST_MODULE
 
 full_java_libs := $(full_shared_java_libs) $(full_static_java_libs) $(LOCAL_CLASSPATH)
 full_java_header_libs := $(full_shared_java_header_libs) $(full_static_java_header_libs)
diff --git a/core/package_internal.mk b/core/package_internal.mk
index b731bfaa3..858a1bfb7 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -274,7 +274,7 @@ endif # EMMA_INSTRUMENT is true
 
 ifeq (true,$(LOCAL_EMMA_INSTRUMENT))
 ifeq (true,$(EMMA_INSTRUMENT_STATIC))
-ifneq ($(LOCAL_SRC_FILES)$(LOCAL_STATIC_JAVA_LIBRARIES)$(LOCAL_SOURCE_FILES_ALL_GENERATED),)
+ifneq ($(LOCAL_SRC_FILES)$(LOCAL_SRCJARS)$(LOCAL_STATIC_JAVA_LIBRARIES)$(LOCAL_SOURCE_FILES_ALL_GENERATED),)
 # Only add jacocoagent if the package contains some java code
 LOCAL_STATIC_JAVA_LIBRARIES += jacocoagent
 # Exclude jacoco classes from proguard
@@ -361,12 +361,13 @@ $(data_binding_stamp) : $(all_res_assets) $(full_android_manifest) \
 # Make sure the data-binding process happens before javac and generation of R.java.
 $(R_file_stamp): $(data_binding_stamp)
 $(java_source_list_file): $(data_binding_stamp)
-$(foreach x,$(sharded_java_source_list_files),$(eval $(x): $(data_binding_stamp)))
 $(full_classes_compiled_jar): $(data_binding_stamp)
 endif  # LOCAL_DATA_BINDING
 
 resource_export_package :=
 
+include $(BUILD_SYSTEM)/aapt_flags.mk
+
 ifeq ($(need_compile_res),true)
 
 ###############################
@@ -465,7 +466,6 @@ $(LOCAL_BUILT_MODULE): $(R_file_stamp)
 # The R.java file must exist by the time the java source
 # list is generated
 $(java_source_list_file): $(R_file_stamp)
-$(foreach x,$(sharded_java_source_list_files),$(eval $(x): $(R_file_stamp)))
 
 endif  # need_compile_res
 
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index d92d8c086..64e16c2c6 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -128,6 +128,8 @@ $(intermediates.COMMON)/export_proguard_flags: $(import_proguard_flag_files) $(a
 import_proguard_flag_files :=
 endif
 
+include $(BUILD_SYSTEM)/aapt_flags.mk
+
 # add --non-constant-id to prevent inlining constants.
 # AAR needs text symbol file R.txt.
 ifdef LOCAL_USE_AAPT2
@@ -185,7 +187,6 @@ endif  # LOCAL_USE_AAPT2
 
 $(LOCAL_BUILT_MODULE): $(R_file_stamp)
 $(java_source_list_file): $(R_file_stamp)
-$(foreach x,$(sharded_java_source_list_files),$(eval $(x): $(R_file_stamp)))
 $(full_classes_compiled_jar): $(R_file_stamp)
 $(full_classes_turbine_jar): $(R_file_stamp)