diff --git a/android/arch.go b/android/arch.go
index d7b12bc..c1b2c33 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -665,7 +665,7 @@
 	}
 
 	// only the primary arch in the ramdisk / vendor_ramdisk / recovery partition
-	if os == Android && (module.InstallInRecovery() || module.InstallInRamdisk() || module.InstallInVendorRamdisk()) {
+	if os == Android && (module.InstallInRecovery() || module.InstallInRamdisk() || module.InstallInVendorRamdisk() || module.InstallInDebugRamdisk()) {
 		osTargets = []Target{osTargets[0]}
 	}
 
@@ -1014,35 +1014,19 @@
 	base.customizableProperties = m.GetProperties()
 }
 
-// appendProperties squashes properties from the given field of the given src property struct
-// into the dst property struct.  Returns the reflect.Value of the field in the src property
-// struct to be used for further appendProperties calls on fields of that property struct.
-func (m *ModuleBase) appendProperties(ctx BottomUpMutatorContext,
-	dst interface{}, src reflect.Value, field, srcPrefix string) reflect.Value {
-
-	// Step into non-nil pointers to structs in the src value.
-	if src.Kind() == reflect.Ptr {
-		if src.IsNil() {
-			return src
-		}
-		src = src.Elem()
-	}
-
-	// Find the requested field in the src struct.
-	src = src.FieldByName(field)
-	if !src.IsValid() {
-		ctx.ModuleErrorf("field %q does not exist", srcPrefix)
-		return src
-	}
-
-	// Save the value of the field in the src struct to return.
-	ret := src
-
+func maybeBlueprintEmbed(src reflect.Value) reflect.Value {
 	// If the value of the field is a struct (as opposed to a pointer to a struct) then step
 	// into the BlueprintEmbed field.
 	if src.Kind() == reflect.Struct {
-		src = src.FieldByName("BlueprintEmbed")
+		return src.FieldByName("BlueprintEmbed")
+	} else {
+		return src
 	}
+}
+
+// Merges the property struct in srcValue into dst.
+func mergePropertyStruct(ctx BaseMutatorContext, dst interface{}, srcValue reflect.Value) {
+	src := maybeBlueprintEmbed(srcValue).Interface()
 
 	// order checks the `android:"variant_prepend"` tag to handle properties where the
 	// arch-specific value needs to come before the generic value, for example for lists of
@@ -1058,7 +1042,7 @@
 	}
 
 	// Squash the located property struct into the destination property struct.
-	err := proptools.ExtendMatchingProperties([]interface{}{dst}, src.Interface(), nil, order)
+	err := proptools.ExtendMatchingProperties([]interface{}{dst}, src, nil, order)
 	if err != nil {
 		if propertyErr, ok := err.(*proptools.ExtendPropertyError); ok {
 			ctx.PropertyErrorf(propertyErr.Property, "%s", propertyErr.Err.Error())
@@ -1066,8 +1050,29 @@
 			panic(err)
 		}
 	}
+}
 
-	return ret
+// Returns the immediate child of the input property struct that corresponds to
+// the sub-property "field".
+func getChildPropertyStruct(ctx BaseMutatorContext,
+	src reflect.Value, field, userFriendlyField string) reflect.Value {
+
+	// Step into non-nil pointers to structs in the src value.
+	if src.Kind() == reflect.Ptr {
+		if src.IsNil() {
+			return src
+		}
+		src = src.Elem()
+	}
+
+	// Find the requested field in the src struct.
+	src = src.FieldByName(proptools.FieldNameForProperty(field))
+	if !src.IsValid() {
+		ctx.ModuleErrorf("field %q does not exist", userFriendlyField)
+		return src
+	}
+
+	return src
 }
 
 // Squash the appropriate OS-specific property structs into the matching top level property structs
@@ -1094,7 +1099,8 @@
 			if os.Class == Host {
 				field := "Host"
 				prefix := "target.host"
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
+				hostProperties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+				mergePropertyStruct(ctx, genProps, hostProperties)
 			}
 
 			// Handle target OS generalities of the form:
@@ -1106,13 +1112,15 @@
 			if os.Linux() {
 				field := "Linux"
 				prefix := "target.linux"
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
+				linuxProperties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+				mergePropertyStruct(ctx, genProps, linuxProperties)
 			}
 
 			if os.Bionic() {
 				field := "Bionic"
 				prefix := "target.bionic"
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
+				bionicProperties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+				mergePropertyStruct(ctx, genProps, bionicProperties)
 			}
 
 			// Handle target OS properties in the form:
@@ -1129,12 +1137,14 @@
 			// },
 			field := os.Field
 			prefix := "target." + os.Name
-			m.appendProperties(ctx, genProps, targetProp, field, prefix)
+			osProperties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+			mergePropertyStruct(ctx, genProps, osProperties)
 
 			if os.Class == Host && os != Windows {
 				field := "Not_windows"
 				prefix := "target.not_windows"
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
+				notWindowsProperties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+				mergePropertyStruct(ctx, genProps, notWindowsProperties)
 			}
 
 			// Handle 64-bit device properties in the form:
@@ -1154,17 +1164,189 @@
 				if ctx.Config().Android64() {
 					field := "Android64"
 					prefix := "target.android64"
-					m.appendProperties(ctx, genProps, targetProp, field, prefix)
+					android64Properties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+					mergePropertyStruct(ctx, genProps, android64Properties)
 				} else {
 					field := "Android32"
 					prefix := "target.android32"
-					m.appendProperties(ctx, genProps, targetProp, field, prefix)
+					android32Properties := getChildPropertyStruct(ctx, targetProp, field, prefix)
+					mergePropertyStruct(ctx, genProps, android32Properties)
 				}
 			}
 		}
 	}
 }
 
+// Returns the struct containing the properties specific to the given
+// architecture type. These look like this in Blueprint files:
+// arch: {
+//     arm64: {
+//         key: value,
+//     },
+// },
+// This struct will also contain sub-structs containing to the architecture/CPU
+// variants and features that themselves contain properties specific to those.
+func getArchTypeStruct(ctx BaseMutatorContext, archProperties interface{}, archType ArchType) reflect.Value {
+	archPropValues := reflect.ValueOf(archProperties).Elem()
+	archProp := archPropValues.FieldByName("Arch").Elem()
+	prefix := "arch." + archType.Name
+	archStruct := getChildPropertyStruct(ctx, archProp, archType.Name, prefix)
+	return archStruct
+}
+
+// Returns the struct containing the properties specific to a given multilib
+// value. These look like this in the Blueprint file:
+// multilib: {
+//     lib32: {
+//         key: value,
+//     },
+// },
+func getMultilibStruct(ctx BaseMutatorContext, archProperties interface{}, archType ArchType) reflect.Value {
+	archPropValues := reflect.ValueOf(archProperties).Elem()
+	multilibProp := archPropValues.FieldByName("Multilib").Elem()
+	multilibProperties := getChildPropertyStruct(ctx, multilibProp, archType.Multilib, "multilib."+archType.Multilib)
+	return multilibProperties
+}
+
+// Returns the structs corresponding to the properties specific to the given
+// architecture and OS in archProperties.
+func getArchProperties(ctx BaseMutatorContext, archProperties interface{}, arch Arch, os OsType, nativeBridgeEnabled bool) []reflect.Value {
+	result := make([]reflect.Value, 0)
+	archPropValues := reflect.ValueOf(archProperties).Elem()
+
+	targetProp := archPropValues.FieldByName("Target").Elem()
+
+	archType := arch.ArchType
+
+	if arch.ArchType != Common {
+		archStruct := getArchTypeStruct(ctx, archProperties, arch.ArchType)
+		result = append(result, archStruct)
+
+		// Handle arch-variant-specific properties in the form:
+		// arch: {
+		//     arm: {
+		//         variant: {
+		//             key: value,
+		//         },
+		//     },
+		// },
+		v := variantReplacer.Replace(arch.ArchVariant)
+		if v != "" {
+			prefix := "arch." + archType.Name + "." + v
+			variantProperties := getChildPropertyStruct(ctx, archStruct, v, prefix)
+			result = append(result, variantProperties)
+		}
+
+		// Handle cpu-variant-specific properties in the form:
+		// arch: {
+		//     arm: {
+		//         variant: {
+		//             key: value,
+		//         },
+		//     },
+		// },
+		if arch.CpuVariant != arch.ArchVariant {
+			c := variantReplacer.Replace(arch.CpuVariant)
+			if c != "" {
+				prefix := "arch." + archType.Name + "." + c
+				cpuVariantProperties := getChildPropertyStruct(ctx, archStruct, c, prefix)
+				result = append(result, cpuVariantProperties)
+			}
+		}
+
+		// Handle arch-feature-specific properties in the form:
+		// arch: {
+		//     arm: {
+		//         feature: {
+		//             key: value,
+		//         },
+		//     },
+		// },
+		for _, feature := range arch.ArchFeatures {
+			prefix := "arch." + archType.Name + "." + feature
+			featureProperties := getChildPropertyStruct(ctx, archStruct, feature, prefix)
+			result = append(result, featureProperties)
+		}
+
+		multilibProperties := getMultilibStruct(ctx, archProperties, archType)
+		result = append(result, multilibProperties)
+
+		// Handle combined OS-feature and arch specific properties in the form:
+		// target: {
+		//     bionic_x86: {
+		//         key: value,
+		//     },
+		// }
+		if os.Linux() {
+			field := "Linux_" + arch.ArchType.Name
+			userFriendlyField := "target.linux_" + arch.ArchType.Name
+			linuxProperties := getChildPropertyStruct(ctx, targetProp, field, userFriendlyField)
+			result = append(result, linuxProperties)
+		}
+
+		if os.Bionic() {
+			field := "Bionic_" + archType.Name
+			userFriendlyField := "target.bionic_" + archType.Name
+			bionicProperties := getChildPropertyStruct(ctx, targetProp, field, userFriendlyField)
+			result = append(result, bionicProperties)
+		}
+
+		// Handle combined OS and arch specific properties in the form:
+		// target: {
+		//     linux_glibc_x86: {
+		//         key: value,
+		//     },
+		//     linux_glibc_arm: {
+		//         key: value,
+		//     },
+		//     android_arm {
+		//         key: value,
+		//     },
+		//     android_x86 {
+		//         key: value,
+		//     },
+		// },
+		field := os.Field + "_" + archType.Name
+		userFriendlyField := "target." + os.Name + "_" + archType.Name
+		osArchProperties := getChildPropertyStruct(ctx, targetProp, field, userFriendlyField)
+		result = append(result, osArchProperties)
+	}
+
+	// Handle arm on x86 properties in the form:
+	// target {
+	//     arm_on_x86 {
+	//         key: value,
+	//     },
+	//     arm_on_x86_64 {
+	//         key: value,
+	//     },
+	// },
+	if os.Class == Device {
+		if arch.ArchType == X86 && (hasArmAbi(arch) ||
+			hasArmAndroidArch(ctx.Config().Targets[Android])) {
+			field := "Arm_on_x86"
+			userFriendlyField := "target.arm_on_x86"
+			armOnX86Properties := getChildPropertyStruct(ctx, targetProp, field, userFriendlyField)
+			result = append(result, armOnX86Properties)
+		}
+		if arch.ArchType == X86_64 && (hasArmAbi(arch) ||
+			hasArmAndroidArch(ctx.Config().Targets[Android])) {
+			field := "Arm_on_x86_64"
+			userFriendlyField := "target.arm_on_x86_64"
+			armOnX8664Properties := getChildPropertyStruct(ctx, targetProp, field, userFriendlyField)
+			result = append(result, armOnX8664Properties)
+		}
+		if os == Android && nativeBridgeEnabled {
+			userFriendlyField := "Native_bridge"
+			prefix := "target.native_bridge"
+			nativeBridgeProperties := getChildPropertyStruct(ctx, targetProp, userFriendlyField, prefix)
+			result = append(result, nativeBridgeProperties)
+		}
+	}
+
+	return result
+}
+
 // Squash the appropriate arch-specific property structs into the matching top level property
 // structs based on the CompileTarget value that was annotated on the variant.
 func (m *ModuleBase) setArchProperties(ctx BottomUpMutatorContext) {
@@ -1176,144 +1358,15 @@
 		if m.archProperties[i] == nil {
 			continue
 		}
-		for _, archProperties := range m.archProperties[i] {
-			archPropValues := reflect.ValueOf(archProperties).Elem()
 
-			archProp := archPropValues.FieldByName("Arch").Elem()
-			multilibProp := archPropValues.FieldByName("Multilib").Elem()
-			targetProp := archPropValues.FieldByName("Target").Elem()
+		propStructs := make([]reflect.Value, 0)
+		for _, archProperty := range m.archProperties[i] {
+			propStructShard := getArchProperties(ctx, archProperty, arch, os, m.Target().NativeBridge == NativeBridgeEnabled)
+			propStructs = append(propStructs, propStructShard...)
+		}
 
-			// Handle arch-specific properties in the form:
-			// arch: {
-			//     arm64: {
-			//         key: value,
-			//     },
-			// },
-			t := arch.ArchType
-
-			if arch.ArchType != Common {
-				field := proptools.FieldNameForProperty(t.Name)
-				prefix := "arch." + t.Name
-				archStruct := m.appendProperties(ctx, genProps, archProp, field, prefix)
-
-				// Handle arch-variant-specific properties in the form:
-				// arch: {
-				//     variant: {
-				//         key: value,
-				//     },
-				// },
-				v := variantReplacer.Replace(arch.ArchVariant)
-				if v != "" {
-					field := proptools.FieldNameForProperty(v)
-					prefix := "arch." + t.Name + "." + v
-					m.appendProperties(ctx, genProps, archStruct, field, prefix)
-				}
-
-				// Handle cpu-variant-specific properties in the form:
-				// arch: {
-				//     variant: {
-				//         key: value,
-				//     },
-				// },
-				if arch.CpuVariant != arch.ArchVariant {
-					c := variantReplacer.Replace(arch.CpuVariant)
-					if c != "" {
-						field := proptools.FieldNameForProperty(c)
-						prefix := "arch." + t.Name + "." + c
-						m.appendProperties(ctx, genProps, archStruct, field, prefix)
-					}
-				}
-
-				// Handle arch-feature-specific properties in the form:
-				// arch: {
-				//     feature: {
-				//         key: value,
-				//     },
-				// },
-				for _, feature := range arch.ArchFeatures {
-					field := proptools.FieldNameForProperty(feature)
-					prefix := "arch." + t.Name + "." + feature
-					m.appendProperties(ctx, genProps, archStruct, field, prefix)
-				}
-
-				// Handle multilib-specific properties in the form:
-				// multilib: {
-				//     lib32: {
-				//         key: value,
-				//     },
-				// },
-				field = proptools.FieldNameForProperty(t.Multilib)
-				prefix = "multilib." + t.Multilib
-				m.appendProperties(ctx, genProps, multilibProp, field, prefix)
-			}
-
-			// Handle combined OS-feature and arch specific properties in the form:
-			// target: {
-			//     bionic_x86: {
-			//         key: value,
-			//     },
-			// }
-			if os.Linux() && arch.ArchType != Common {
-				field := "Linux_" + arch.ArchType.Name
-				prefix := "target.linux_" + arch.ArchType.Name
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
-			}
-
-			if os.Bionic() && arch.ArchType != Common {
-				field := "Bionic_" + t.Name
-				prefix := "target.bionic_" + t.Name
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
-			}
-
-			// Handle combined OS and arch specific properties in the form:
-			// target: {
-			//     linux_glibc_x86: {
-			//         key: value,
-			//     },
-			//     linux_glibc_arm: {
-			//         key: value,
-			//     },
-			//     android_arm {
-			//         key: value,
-			//     },
-			//     android_x86 {
-			//         key: value,
-			//     },
-			// },
-			if arch.ArchType != Common {
-				field := os.Field + "_" + t.Name
-				prefix := "target." + os.Name + "_" + t.Name
-				m.appendProperties(ctx, genProps, targetProp, field, prefix)
-			}
-
-			// Handle arm on x86 properties in the form:
-			// target {
-			//     arm_on_x86 {
-			//         key: value,
-			//     },
-			//     arm_on_x86_64 {
-			//         key: value,
-			//     },
-			// },
-			if os.Class == Device {
-				if arch.ArchType == X86 && (hasArmAbi(arch) ||
-					hasArmAndroidArch(ctx.Config().Targets[Android])) {
-					field := "Arm_on_x86"
-					prefix := "target.arm_on_x86"
-					m.appendProperties(ctx, genProps, targetProp, field, prefix)
-				}
-				if arch.ArchType == X86_64 && (hasArmAbi(arch) ||
-					hasArmAndroidArch(ctx.Config().Targets[Android])) {
-					field := "Arm_on_x86_64"
-					prefix := "target.arm_on_x86_64"
-					m.appendProperties(ctx, genProps, targetProp, field, prefix)
-				}
-				if os == Android && m.Target().NativeBridge == NativeBridgeEnabled {
-					field := "Native_bridge"
-					prefix := "target.native_bridge"
-					m.appendProperties(ctx, genProps, targetProp, field, prefix)
-				}
-			}
+		for _, propStruct := range propStructs {
+			mergePropertyStruct(ctx, genProps, propStruct)
 		}
 	}
 }
@@ -1673,13 +1726,144 @@
 	return buildTargets, nil
 }
 
+func (m *ModuleBase) getArchPropertySet(propertySet interface{}, archType ArchType) interface{} {
+	archString := archType.Field
+	for i := range m.archProperties {
+		if m.archProperties[i] == nil {
+			// Skip over nil properties
+			continue
+		}
+
+		// Not archProperties are usable; this function looks for properties of a very specific
+		// form, and ignores the rest.
+		for _, archProperty := range m.archProperties[i] {
+			// archPropValue is a property struct, we are looking for the form:
+			// `arch: { arm: { key: value, ... }}`
+			archPropValue := reflect.ValueOf(archProperty).Elem()
+
+			// Unwrap src so that it should looks like a pointer to `arm: { key: value, ... }`
+			src := archPropValue.FieldByName("Arch").Elem()
+
+			// Step into non-nil pointers to structs in the src value.
+			if src.Kind() == reflect.Ptr {
+				if src.IsNil() {
+					continue
+				}
+				src = src.Elem()
+			}
+
+			// Find the requested field (e.g. arm, x86) in the src struct.
+			src = src.FieldByName(archString)
+
+			// We only care about structs.
+			if !src.IsValid() || src.Kind() != reflect.Struct {
+				continue
+			}
+
+			// If the value of the field is a struct then step into the
+			// BlueprintEmbed field. The special "BlueprintEmbed" name is
+			// used by createArchPropTypeDesc to embed the arch properties
+			// in the parent struct, so the src arch prop should be in this
+			// field.
+			//
+			// See createArchPropTypeDesc for more details on how Arch-specific
+			// module properties are processed from the nested props and written
+			// into the module's archProperties.
+			src = src.FieldByName("BlueprintEmbed")
+
+			// Clone the destination prop, since we want a unique prop struct per arch.
+			propertySetClone := reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
+
+			// Copy the located property struct into the cloned destination property struct.
+			err := proptools.ExtendMatchingProperties([]interface{}{propertySetClone}, src.Interface(), nil, proptools.OrderReplace)
+			if err != nil {
+				// This is fine, it just means the src struct doesn't match the type of propertySet.
+				continue
+			}
+
+			return propertySetClone
+		}
+	}
+	// No property set was found specific to the given arch, so return an empty
+	// property set.
+	return reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
+}
+
+// getMultilibPropertySet returns a property set struct matching the type of
+// `propertySet`, containing multilib-specific module properties for the given architecture.
+// If no multilib-specific properties exist for the given architecture, returns an empty property
+// set matching `propertySet`'s type.
+func (m *ModuleBase) getMultilibPropertySet(propertySet interface{}, archType ArchType) interface{} {
+	// archType.Multilib is lowercase (for example, lib32) but property struct field is
+	// capitalized, such as Lib32, so use strings.Title to capitalize it.
+	multiLibString := strings.Title(archType.Multilib)
+
+	for i := range m.archProperties {
+		if m.archProperties[i] == nil {
+			// Skip over nil properties
+			continue
+		}
+
+		// Not archProperties are usable; this function looks for properties of a very specific
+		// form, and ignores the rest.
+		for _, archProperties := range m.archProperties[i] {
+			// archPropValue is a property struct, we are looking for the form:
+			// `multilib: { lib32: { key: value, ... }}`
+			archPropValue := reflect.ValueOf(archProperties).Elem()
+
+			// Unwrap src so that it should looks like a pointer to `lib32: { key: value, ... }`
+			src := archPropValue.FieldByName("Multilib").Elem()
+
+			// Step into non-nil pointers to structs in the src value.
+			if src.Kind() == reflect.Ptr {
+				if src.IsNil() {
+					// Ignore nil pointers.
+					continue
+				}
+				src = src.Elem()
+			}
+
+			// Find the requested field (e.g. lib32) in the src struct.
+			src = src.FieldByName(multiLibString)
+
+			// We only care about valid struct pointers.
+			if !src.IsValid() || src.Kind() != reflect.Ptr || src.Elem().Kind() != reflect.Struct {
+				continue
+			}
+
+			// Get the zero value for the requested property set.
+			propertySetClone := reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
+
+			// Copy the located property struct into the "zero" property set struct.
+			err := proptools.ExtendMatchingProperties([]interface{}{propertySetClone}, src.Interface(), nil, proptools.OrderReplace)
+
+			if err != nil {
+				// This is fine, it just means the src struct doesn't match.
+				continue
+			}
+
+			return propertySetClone
+		}
+	}
+
+	// There were no multilib properties specifically matching the given archtype.
+	// Return zeroed value.
+	return reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
+}
+
 // GetArchProperties returns a map of architectures to the values of the
-// properties of the 'dst' struct that are specific to that architecture.
+// properties of the 'propertySet' struct that are specific to that architecture.
 //
 // For example, passing a struct { Foo bool, Bar string } will return an
 // interface{} that can be type asserted back into the same struct, containing
 // the arch specific property value specified by the module if defined.
-func (m *ModuleBase) GetArchProperties(dst interface{}) map[ArchType]interface{} {
+//
+// Arch-specific properties may come from an arch stanza or a multilib stanza; properties
+// in these stanzas are combined.
+// For example: `arch: { x86: { Foo: ["bar"] } }, multilib: { lib32: {` Foo: ["baz"] } }`
+// will result in `Foo: ["bar", "baz"]` being returned for architecture x86, if the given
+// propertyset contains `Foo []string`.
+func (m *ModuleBase) GetArchProperties(ctx BaseMutatorContext, propertySet interface{}) map[ArchType]interface{} {
 	// Return value of the arch types to the prop values for that arch.
 	archToProp := map[ArchType]interface{}{}
 
@@ -1688,82 +1872,47 @@
 		return archToProp
 	}
 
-	// archProperties has the type of [][]interface{}. Looks complicated, so let's
-	// explain this step by step.
-	//
-	// Loop over the outer index, which determines the property struct that
-	// contains a matching set of properties in dst that we're interested in.
-	// For example, BaseCompilerProperties or BaseLinkerProperties.
-	for i := range m.archProperties {
-		if m.archProperties[i] == nil {
-			// Skip over nil arch props
-			continue
-		}
+	dstType := reflect.ValueOf(propertySet).Type()
+	var archProperties []interface{}
 
-		// Non-nil arch prop, let's see if the props match up.
-		for _, arch := range ArchTypeList() {
-			// e.g X86, Arm
-			field := arch.Field
-
-			// If it's not nil, loop over the inner index, which determines the arch variant
-			// of the prop type. In an Android.bp file, this is like looping over:
-			//
-			// arch: { arm: { key: value, ... }, x86: { key: value, ... } }
-			for _, archProperties := range m.archProperties[i] {
-				archPropValues := reflect.ValueOf(archProperties).Elem()
-
-				// This is the archPropRoot struct. Traverse into the Arch nested struct.
-				src := archPropValues.FieldByName("Arch").Elem()
-
-				// Step into non-nil pointers to structs in the src value.
-				if src.Kind() == reflect.Ptr {
-					if src.IsNil() {
-						// Ignore nil pointers.
-						continue
-					}
-					src = src.Elem()
-				}
-
-				// Find the requested field (e.g. x86, x86_64) in the src struct.
-				src = src.FieldByName(field)
-				if !src.IsValid() {
-					continue
-				}
-
-				// We only care about structs. These are not the droids you are looking for.
-				if src.Kind() != reflect.Struct {
-					continue
-				}
-
-				// If the value of the field is a struct  then step into the
-				// BlueprintEmbed field. The special "BlueprintEmbed" name is
-				// used by createArchPropTypeDesc to embed the arch properties
-				// in the parent struct, so the src arch prop should be in this
-				// field.
-				//
-				// See createArchPropTypeDesc for more details on how Arch-specific
-				// module properties are processed from the nested props and written
-				// into the module's archProperties.
-				src = src.FieldByName("BlueprintEmbed")
-
-				// Clone the destination prop, since we want a unique prop struct per arch.
-				dstClone := reflect.New(reflect.ValueOf(dst).Elem().Type()).Interface()
-
-				// Copy the located property struct into the cloned destination property struct.
-				err := proptools.ExtendMatchingProperties([]interface{}{dstClone}, src.Interface(), nil, proptools.OrderReplace)
-				if err != nil {
-					// This is fine, it just means the src struct doesn't match.
-					continue
-				}
-
-				// Found the prop for the arch, you have.
-				archToProp[arch] = dstClone
-
-				// Go to the next prop.
-				break
-			}
+	// First find the property set in the module that corresponds to the requested
+	// one. m.archProperties[i] corresponds to m.generalProperties[i].
+	for i, generalProp := range m.generalProperties {
+		srcType := reflect.ValueOf(generalProp).Type()
+		if srcType == dstType {
+			archProperties = m.archProperties[i]
+			break
 		}
 	}
+
+	if archProperties == nil {
+		// This module does not have the property set requested
+		return archToProp
+	}
+
+	// For each arch type (x86, arm64, etc.)
+	for _, arch := range ArchTypeList() {
+		// Arch properties are sometimes sharded (see createArchPropTypeDesc() ).
+		// Iterate over ever shard and extract a struct with the same type as the
+		// input one that contains the data specific to that arch.
+		propertyStructs := make([]reflect.Value, 0)
+		for _, archProperty := range archProperties {
+			archTypeStruct := getArchTypeStruct(ctx, archProperty, arch)
+			multilibStruct := getMultilibStruct(ctx, archProperty, arch)
+			propertyStructs = append(propertyStructs, archTypeStruct, multilibStruct)
+		}
+
+		// Create a new instance of the requested property set
+		value := reflect.New(reflect.ValueOf(propertySet).Elem().Type()).Interface()
+
+		// Merge all the structs together
+		for _, propertyStruct := range propertyStructs {
+			mergePropertyStruct(ctx, value, propertyStruct)
+		}
+
+		archToProp[arch] = value
+	}
+
 	return archToProp
 }
 
diff --git a/android/bazel.go b/android/bazel.go
index e330681..6c476a7 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -170,71 +170,93 @@
 		"system/core/property_service/libpropertyinfoparser": Bp2BuildDefaultTrueRecursively,
 		"system/libbase":                  Bp2BuildDefaultTrueRecursively,
 		"system/logging/liblog":           Bp2BuildDefaultTrueRecursively,
+		"external/jemalloc_new":           Bp2BuildDefaultTrueRecursively,
+		"external/fmtlib":                 Bp2BuildDefaultTrueRecursively,
 		"external/arm-optimized-routines": Bp2BuildDefaultTrueRecursively,
 	}
 
 	// Per-module denylist to always opt modules out of both bp2build and mixed builds.
 	bp2buildModuleDoNotConvertList = []string{
 		// Things that transitively depend on unconverted libc_* modules.
-		"libc_common",        // ruperts@, cc_library_static, depends on //bionic/libc:libc_nopthread
-		"libc_common_static", // ruperts@, cc_library_static, depends on //bionic/libc:libc_common
-		"libc_common_shared", // ruperts@, cc_library_static, depends on //bionic/libc:libc_common
-		"libc_nomalloc",      // ruperts@, cc_library_static, depends on //bionic/libc:libc_common
-		"libc_nopthread",     // ruperts@, cc_library_static, depends on lib_bionic_ndk, libc_syscalls, libc_tzcode, libstdc++
+		"libc_nopthread", // http://b/186821550, cc_library_static, depends on //bionic/libc:libc_bionic_ndk (http://b/186822256)
+		//                                                     also depends on //bionic/libc:libc_tzcode (http://b/186822591)
+		//                                                     also depends on //bionic/libc:libstdc++ (http://b/186822597)
+		"libc_common",        // http://b/186821517, cc_library_static, depends on //bionic/libc:libc_nopthread (http://b/186821550)
+		"libc_common_static", // http://b/186824119, cc_library_static, depends on //bionic/libc:libc_common (http://b/186821517)
+		"libc_common_shared", // http://b/186824118, cc_library_static, depends on //bionic/libc:libc_common (http://b/186821517)
+		"libc_nomalloc",      // http://b/186825031, cc_library_static, depends on //bionic/libc:libc_common (http://b/186821517)
 
-		// Things that transitively depend on //system/libbase. libbase doesn't work because:
-		// fmtlib: fatal error: 'cassert' file not found
-		"libbase",                     // eakammer@, cc_library, no such target '//build/bazel/platforms/os:darwin': target 'darwin' not declared
-		"libbase_ndk",                 // eakammer@, cc_library, no such target '//build/bazel/platforms/os:darwin': target 'darwin' not declared
-		"libbionic_spawn_benchmark",   // ruperts@, cc_library_static, depends on libbase, libgoogle-benchmark
-		"libc_malloc_debug",           // ruperts@, cc_library_static, depends on libbase
-		"libc_malloc_debug_backtrace", // ruperts@, cc_library_static, depends on libbase
-		"libcutils",                   // eakammer@, cc_library, depends on libbase, liblog
-		"libcutils_sockets",           // eakammer@, cc_library, depends on libbase, liblog
-		"liblinker_debuggerd_stub",    // ruperts@, cc_library_static, depends on libbase, libz, libziparchive
-		"liblinker_main",              // ruperts@, cc_library_static, depends on libbase, libz, libziparchive
-		"liblinker_malloc",            // ruperts@, cc_library_static, depends on libziparchive, libz, libbase
+		"libbionic_spawn_benchmark", // http://b/186824595, cc_library_static, depends on //external/google-benchmark (http://b/186822740)
+		//                                                                also depends on //system/logging/liblog:liblog (http://b/186822772)
 
-		// Requires non-libc targets, but otherwise works
-		"libc_jemalloc_wrapper", // ruperts@, cc_library_static, depends on //external/jemalloc_new
+		"libc_malloc_debug",           // http://b/186824339, cc_library_static, depends on //system/libbase:libbase (http://b/186823646)
+		"libc_malloc_debug_backtrace", // http://b/186824112, cc_library_static, depends on //external/libcxxabi:libc++demangle (http://b/186823773)
 
-		// Compilation error, seems to be fixable by changing the toolchain definition
-		"libc_bionic_ndk", // ruperts@, cc_library_static, error: ISO C++ requires field designators...
-		"libc_tzcode",     // ruperts@, cc_library_static, error: expected expression
-		"libm",            // jingwen@, cc_library, error: "expected register here" (and many others)
+		"libcutils",         // http://b/186827426, cc_library, depends on //system/core/libprocessgroup:libprocessgroup_headers (http://b/186826841)
+		"libcutils_sockets", // http://b/186826853, cc_library, depends on //system/libbase:libbase (http://b/186826479)
 
-		// Linker error
-		"libc_malloc_hooks", // jingwen@, cc_library, undefined symbol: __malloc_hook, etc.
-		"libstdc++",         // jingwen@, cc_library, undefined symbol: free
+		"liblinker_debuggerd_stub", // http://b/186824327, cc_library_static, depends on //external/zlib:libz (http://b/186823782)
+		//                                                               also depends on //system/libziparchive:libziparchive (http://b/186823656)
+		//                                                               also depends on //system/logging/liblog:liblog (http://b/186822772)
+		"liblinker_main", // http://b/186825989, cc_library_static, depends on //external/zlib:libz (http://b/186823782)
+		//                                                     also depends on //system/libziparchive:libziparchive (http://b/186823656)
+		//                                                     also depends on//system/logging/liblog:liblog (http://b/186822772)
+		"liblinker_malloc", // http://b/186826466, cc_library_static, depends on //external/zlib:libz (http://b/186823782)
+		//                                                       also depends on //system/libziparchive:libziparchive (http://b/186823656)
+		//                                                       also depends on //system/logging/liblog:liblog (http://b/186822772)
+		"libc_jemalloc_wrapper", // http://b/187012490, cc_library_static, depends on //external/jemalloc_new:libjemalloc5 (http://b/186828626)
+		"libc_ndk",              // http://b/187013218, cc_library_static, depends on //bionic/libm:libm (http://b/183064661)
+		"libc",                  // http://b/183064430, cc_library, depends on //external/jemalloc_new:libjemalloc5 (http://b/186828626)
+		"libc_tzcode",           // http://b/186822591, cc_library_static, localtime.c:84:46: error: expected expression
+		"libc_bionic_ndk",       // http://b/186822256, cc_library_static, signal.cpp:186:52: error: ISO C++ requires field designators to be specified in declaration order
+		"libc_malloc_hooks",     // http://b/187016307, cc_library, ld.lld: error: undefined symbol: __malloc_hook
+		"libm",                  // http://b/183064661, cc_library, math.h:25:16: error: unexpected token in argument list
 
-		// Includes not found
-		"libbionic_tests_headers_posix", // ruperts@, cc_library_static, 'dirent.h' not found
-		"liblog",                        // eakammer@, cc_library, 'sys/cdefs.h' file not found, missing -isystem bionic/libc/include through the libc/libm/libdl default dependencies if system_shared_libs unset
-		"libseccomp_policy",             // jingwen@, cc_library, 'linux/filter.h' not found, missing -isystem bionic/libc/kernel/uapi/asm-arm, probably due to us not handling arch { ... { export_system_include_dirs } } correctly
-		"note_memtag_heap_async",        // lberki@, cc_library_static, error: feature.h not found, missing -isystem bionic/libc/include through the libc/libm/libdl default dependencies if system_shared_libs unset
-		"note_memtag_heap_sync",         // lberki@, cc_library_static, error: feature.h not found, missing -isystem bionic/libc/include through the libc/libm/libdl default dependencies if system_shared_libs unset
+		// http://b/186823769: Needs C++ STL support, includes from unconverted standard libraries in //external/libcxx
+		// c++_static
+		"libbase_ndk", // http://b/186826477, cc_library, no such target '//build/bazel/platforms/os:darwin' when --platforms //build/bazel/platforms:android_x86 is added
+		// libcxx
+		"libBionicBenchmarksUtils", // cc_library_static, fatal error: 'map' file not found, from libcxx
+		"fmtlib",                   // cc_library_static, fatal error: 'cassert' file not found, from libcxx
+		"libbase",                  // http://b/186826479, cc_library, fatal error: 'memory' file not found, from libcxx
 
-		// Other
-		"libBionicBenchmarksUtils", // ruperts@, cc_library_static, 'map' file not found
-		"libc_ndk",                 // ruperts@, cc_library_static, depends on libc_bionic_ndk, libc_jemalloc_wrapper, libc_tzcode, libstdc++
+		// http://b/186024507: Includes errors because of the system_shared_libs default value.
+		// Missing -isystem bionic/libc/include through the libc/libm/libdl
+		// default dependencies if system_shared_libs is unset.
+		"liblog",                 // http://b/186822772: cc_library, 'sys/cdefs.h' file not found
+		"libjemalloc5_jet",       // cc_library, 'sys/cdefs.h' file not found
+		"libseccomp_policy",      // http://b/186476753: cc_library, 'linux/filter.h' not found
+		"note_memtag_heap_async", // http://b/185127353: cc_library_static, error: feature.h not found
+		"note_memtag_heap_sync",  // http://b/185127353: cc_library_static, error: feature.h not found
 
-		"libc", // jingwen@, cc_library, depends on //external/gwp_asan
+		// Tests. Handle later.
+		"libbionic_tests_headers_posix", // http://b/186024507, cc_library_static, sched.h, time.h not found
+		"libjemalloc5_integrationtest",
+		"libjemalloc5_stresstestlib",
+		"libjemalloc5_unittest",
+	}
+
+	// Per-module denylist of cc_library modules to only generate the static
+	// variant if their shared variant isn't ready or buildable by Bazel.
+	bp2buildCcLibraryStaticOnlyList = []string{
+		"libstdc++", // http://b/186822597, cc_library, ld.lld: error: undefined symbol: __errno
 	}
 
 	// Per-module denylist to opt modules out of mixed builds. Such modules will
 	// still be generated via bp2build.
 	mixedBuildsDisabledList = []string{
-		"libc_gdtoa",                       // ruperts@, cc_library_static, OK for bp2build but undefined symbol: __strtorQ for mixed builds
 		"libc_netbsd",                      // lberki@, cc_library_static, version script assignment of 'LIBC_PRIVATE' to symbol 'SHA1Final' failed: symbol not defined
 		"libc_openbsd",                     // ruperts@, cc_library_static, OK for bp2build but error: duplicate symbol: strcpy for mixed builds
 		"libsystemproperties",              // cparsons@, cc_library_static, wrong include paths
 		"libpropertyinfoparser",            // cparsons@, cc_library_static, wrong include paths
 		"libarm-optimized-routines-string", // jingwen@, cc_library_static, OK for bp2build but b/186615213 (asflags not handled in  bp2build), version script assignment of 'LIBC' to symbol 'memcmp' failed: symbol not defined (also for memrchr, strnlen)
+		"fmtlib_ndk",                       // http://b/187040371, cc_library_static, OK for bp2build but format-inl.h:11:10: fatal error: 'cassert' file not found for mixed builds
 	}
 
 	// Used for quicker lookups
 	bp2buildDoNotWriteBuildFile = map[string]bool{}
 	bp2buildModuleDoNotConvert  = map[string]bool{}
+	bp2buildCcLibraryStaticOnly = map[string]bool{}
 	mixedBuildsDisabled         = map[string]bool{}
 )
 
@@ -247,11 +269,19 @@
 		bp2buildModuleDoNotConvert[moduleName] = true
 	}
 
+	for _, moduleName := range bp2buildCcLibraryStaticOnlyList {
+		bp2buildCcLibraryStaticOnly[moduleName] = true
+	}
+
 	for _, moduleName := range mixedBuildsDisabledList {
 		mixedBuildsDisabled[moduleName] = true
 	}
 }
 
+func GenerateCcLibraryStaticOnly(ctx BazelConversionPathContext) bool {
+	return bp2buildCcLibraryStaticOnly[ctx.Module().Name()]
+}
+
 func ShouldWriteBuildFileForDir(dir string) bool {
 	if _, ok := bp2buildDoNotWriteBuildFile[dir]; ok {
 		return false
@@ -269,6 +299,12 @@
 	if len(b.GetBazelLabel(ctx, ctx.Module())) == 0 {
 		return false
 	}
+	if GenerateCcLibraryStaticOnly(ctx) {
+		// Don't use partially-converted cc_library targets in mixed builds,
+		// since mixed builds would generally rely on both static and shared
+		// variants of a cc_library.
+		return false
+	}
 	return !mixedBuildsDisabled[ctx.Module().Name()]
 }
 
diff --git a/android/bazel_paths.go b/android/bazel_paths.go
index 4280bc3..f4b2a7c 100644
--- a/android/bazel_paths.go
+++ b/android/bazel_paths.go
@@ -100,6 +100,10 @@
 	return labels
 }
 
+func BazelLabelForModuleSrcSingle(ctx BazelConversionPathContext, path string) bazel.Label {
+	return BazelLabelForModuleSrcExcludes(ctx, []string{path}, []string(nil)).Includes[0]
+}
+
 // BazelLabelForModuleSrc expects a list of path (relative to local module directory) and module
 // references (":<module>") and returns a bazel.LabelList{} containing the resolved references in
 // paths, relative to the local module, or Bazel-labels (absolute if in a different package or
diff --git a/android/image.go b/android/image.go
index 1a1a423..66101be 100644
--- a/android/image.go
+++ b/android/image.go
@@ -30,6 +30,10 @@
 	// vendor ramdisk partition).
 	VendorRamdiskVariantNeeded(ctx BaseModuleContext) bool
 
+	// DebugRamdiskVariantNeeded should return true if the module needs a debug ramdisk variant (installed on the
+	// debug ramdisk partition: $(PRODUCT_OUT)/debug_ramdisk).
+	DebugRamdiskVariantNeeded(ctx BaseModuleContext) bool
+
 	// RecoveryVariantNeeded should return true if the module needs a recovery variant (installed on the
 	// recovery partition).
 	RecoveryVariantNeeded(ctx BaseModuleContext) bool
@@ -60,6 +64,9 @@
 
 	// VendorRamdiskVariation means a module to be installed to vendor ramdisk image.
 	VendorRamdiskVariation string = "vendor_ramdisk"
+
+	// DebugRamdiskVariation means a module to be installed to debug ramdisk image.
+	DebugRamdiskVariation string = "debug_ramdisk"
 )
 
 // imageMutator creates variants for modules that implement the ImageInterface that
@@ -83,6 +90,9 @@
 		if m.VendorRamdiskVariantNeeded(ctx) {
 			variations = append(variations, VendorRamdiskVariation)
 		}
+		if m.DebugRamdiskVariantNeeded(ctx) {
+			variations = append(variations, DebugRamdiskVariation)
+		}
 		if m.RecoveryVariantNeeded(ctx) {
 			variations = append(variations, RecoveryVariation)
 		}
diff --git a/android/module.go b/android/module.go
index fdb5290..99606d1 100644
--- a/android/module.go
+++ b/android/module.go
@@ -393,6 +393,7 @@
 	InstallInSanitizerDir() bool
 	InstallInRamdisk() bool
 	InstallInVendorRamdisk() bool
+	InstallInDebugRamdisk() bool
 	InstallInRecovery() bool
 	InstallInRoot() bool
 	InstallBypassMake() bool
@@ -450,6 +451,7 @@
 	InstallInSanitizerDir() bool
 	InstallInRamdisk() bool
 	InstallInVendorRamdisk() bool
+	InstallInDebugRamdisk() bool
 	InstallInRecovery() bool
 	InstallInRoot() bool
 	InstallBypassMake() bool
@@ -753,6 +755,9 @@
 	// Whether this module is installed to vendor ramdisk
 	Vendor_ramdisk *bool
 
+	// Whether this module is installed to debug ramdisk
+	Debug_ramdisk *bool
+
 	// Whether this module is built for non-native architectures (also known as native bridge binary)
 	Native_bridge_supported *bool `android:"arch_variant"`
 
@@ -1540,6 +1545,10 @@
 	return Bool(m.commonProperties.Vendor_ramdisk)
 }
 
+func (m *ModuleBase) InstallInDebugRamdisk() bool {
+	return Bool(m.commonProperties.Debug_ramdisk)
+}
+
 func (m *ModuleBase) InstallInRecovery() bool {
 	return Bool(m.commonProperties.Recovery)
 }
@@ -1593,6 +1602,10 @@
 	return m.base().commonProperties.ImageVariation == VendorRamdiskVariation
 }
 
+func (m *ModuleBase) InDebugRamdisk() bool {
+	return m.base().commonProperties.ImageVariation == DebugRamdiskVariation
+}
+
 func (m *ModuleBase) InRecovery() bool {
 	return m.base().commonProperties.ImageVariation == RecoveryVariation
 }
@@ -2576,6 +2589,10 @@
 	return m.module.InstallInVendorRamdisk()
 }
 
+func (m *moduleContext) InstallInDebugRamdisk() bool {
+	return m.module.InstallInDebugRamdisk()
+}
+
 func (m *moduleContext) InstallInRecovery() bool {
 	return m.module.InstallInRecovery()
 }
diff --git a/android/paths.go b/android/paths.go
index 93c5684..b934687 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -106,6 +106,7 @@
 	InstallInSanitizerDir() bool
 	InstallInRamdisk() bool
 	InstallInVendorRamdisk() bool
+	InstallInDebugRamdisk() bool
 	InstallInRecovery() bool
 	InstallInRoot() bool
 	InstallBypassMake() bool
@@ -1689,6 +1690,8 @@
 			if !ctx.InstallInRoot() {
 				partition += "/system"
 			}
+		} else if ctx.InstallInDebugRamdisk() {
+			partition = "debug_ramdisk"
 		} else if ctx.InstallInRecovery() {
 			if ctx.InstallInRoot() {
 				partition = "recovery/root"
@@ -1859,6 +1862,7 @@
 	inSanitizerDir  bool
 	inRamdisk       bool
 	inVendorRamdisk bool
+	inDebugRamdisk  bool
 	inRecovery      bool
 	inRoot          bool
 	forceOS         *OsType
@@ -1891,6 +1895,10 @@
 	return m.inVendorRamdisk
 }
 
+func (m testModuleInstallPathContext) InstallInDebugRamdisk() bool {
+	return m.inDebugRamdisk
+}
+
 func (m testModuleInstallPathContext) InstallInRecovery() bool {
 	return m.inRecovery
 }
diff --git a/android/paths_test.go b/android/paths_test.go
index 6ec75b4..f8ccc77 100644
--- a/android/paths_test.go
+++ b/android/paths_test.go
@@ -395,6 +395,19 @@
 			partitionDir: "target/product/test_device/vendor_ramdisk",
 		},
 		{
+			name: "debug_ramdisk binary",
+			ctx: &testModuleInstallPathContext{
+				baseModuleContext: baseModuleContext{
+					os:     deviceTarget.Os,
+					target: deviceTarget,
+				},
+				inDebugRamdisk: true,
+			},
+			in:           []string{"my_test"},
+			out:          "target/product/test_device/debug_ramdisk/my_test",
+			partitionDir: "target/product/test_device/debug_ramdisk",
+		},
+		{
 			name: "system native test binary",
 			ctx: &testModuleInstallPathContext{
 				baseModuleContext: baseModuleContext{
diff --git a/apex/androidmk.go b/apex/androidmk.go
index 06d3b54..ebf0833 100644
--- a/apex/androidmk.go
+++ b/apex/androidmk.go
@@ -118,10 +118,6 @@
 	seenDataOutPaths := make(map[string]bool)
 
 	for _, fi := range a.filesInfo {
-		if ccMod, ok := fi.module.(*cc.Module); ok && ccMod.Properties.HideFromMake {
-			continue
-		}
-
 		linkToSystemLib := a.linkToSystemLib && fi.transitiveDep && fi.availableToPlatform()
 
 		moduleName := a.fullModuleName(apexBundleName, &fi)
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 956b8d9..08d82e9 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -6519,6 +6519,15 @@
 			min_sdk_version: "current",
 		}
 
+		bootclasspath_fragment {
+			name: "art-bootclasspath-fragment",
+			image_name: "art",
+			contents: ["some-art-lib"],
+			apex_available: [
+				"com.android.art.debug",
+			],
+		}
+
 		apex_key {
 			name: "com.android.art.debug.key",
 		}
@@ -6651,14 +6660,14 @@
 	})
 
 	t.Run("updatable jar from some other apex in the ART boot image => error", func(t *testing.T) {
-		err := `module "some-updatable-apex-lib" from updatable apexes \["some-updatable-apex"\] is not allowed in the ART boot image`
+		err := `ArtApexJars expects this to be in apex "some-updatable-apex" but this is only in apexes.*"com.android.art.debug"`
 		// Update the dexpreopt ArtApexJars directly.
 		preparer := prepareSetArtJars("some-updatable-apex:some-updatable-apex-lib")
 		testNoUpdatableJarsInBootImage(t, err, preparer)
 	})
 
 	t.Run("non-updatable jar from some other apex in the ART boot image => error", func(t *testing.T) {
-		err := `module "some-non-updatable-apex-lib" is not allowed in the ART boot image`
+		err := `ArtApexJars expects this to be in apex "some-non-updatable-apex" but this is only in apexes.*"com.android.art.debug"`
 		// Update the dexpreopt ArtApexJars directly.
 		preparer := prepareSetArtJars("some-non-updatable-apex:some-non-updatable-apex-lib")
 		testNoUpdatableJarsInBootImage(t, err, preparer)
@@ -6688,7 +6697,7 @@
 	})
 
 	t.Run("platform jar in the ART boot image => error", func(t *testing.T) {
-		err := `module "some-platform-lib" is not allowed in the ART boot image`
+		err := `ArtApexJars is invalid as it requests a platform variant of "some-platform-lib"`
 		// Update the dexpreopt ArtApexJars directly.
 		preparer := prepareSetArtJars("platform:some-platform-lib")
 		testNoUpdatableJarsInBootImage(t, err, preparer)
diff --git a/apex/bootclasspath_fragment_test.go b/apex/bootclasspath_fragment_test.go
index 3d39d34..e2b320c 100644
--- a/apex/bootclasspath_fragment_test.go
+++ b/apex/bootclasspath_fragment_test.go
@@ -94,6 +94,8 @@
 		bootclasspath_fragment {
 			name: "art-bootclasspath-fragment",
 			image_name: "art",
+			// Must match the "com.android.art:" entries passed to FixtureConfigureBootJars above.
+			contents: ["baz", "quuz"],
 			apex_available: [
 				"com.android.art",
 			],
@@ -405,6 +407,8 @@
 		prebuilt_bootclasspath_fragment {
 			name: "mybootclasspathfragment",
 			image_name: "art",
+			// Must match the "com.android.art:" entries passed to FixtureConfigureBootJars above.
+			contents: ["foo", "bar"],
 			apex_available: [
 				"com.android.art",
 			],
diff --git a/bazel/properties.go b/bazel/properties.go
index 037150d..a71b12b 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -227,6 +227,51 @@
 	HasConfigurableValues() bool
 }
 
+// Represents an attribute whose value is a single label
+type LabelAttribute struct {
+	Value  Label
+	X86    Label
+	X86_64 Label
+	Arm    Label
+	Arm64  Label
+}
+
+func (attr *LabelAttribute) GetValueForArch(arch string) Label {
+	switch arch {
+	case ARCH_ARM:
+		return attr.Arm
+	case ARCH_ARM64:
+		return attr.Arm64
+	case ARCH_X86:
+		return attr.X86
+	case ARCH_X86_64:
+		return attr.X86_64
+	case CONDITIONS_DEFAULT:
+		return attr.Value
+	default:
+		panic("Invalid arch type")
+	}
+}
+
+func (attr *LabelAttribute) SetValueForArch(arch string, value Label) {
+	switch arch {
+	case ARCH_ARM:
+		attr.Arm = value
+	case ARCH_ARM64:
+		attr.Arm64 = value
+	case ARCH_X86:
+		attr.X86 = value
+	case ARCH_X86_64:
+		attr.X86_64 = value
+	default:
+		panic("Invalid arch type")
+	}
+}
+
+func (attr LabelAttribute) HasConfigurableValues() bool {
+	return attr.Arm.Label != "" || attr.Arm64.Label != "" || attr.X86.Label != "" || attr.X86_64.Label != ""
+}
+
 // Arch-specific label_list typed Bazel attribute values. This should correspond
 // to the types of architectures supported for compilation in arch.go.
 type labelListArchValues struct {
diff --git a/bp2build/bp2build.go b/bp2build/bp2build.go
index f1bf648..cf6994f 100644
--- a/bp2build/bp2build.go
+++ b/bp2build/bp2build.go
@@ -18,7 +18,6 @@
 	"android/soong/android"
 	"fmt"
 	"os"
-	"strings"
 )
 
 // Codegen is the backend of bp2build. The code generator is responsible for
@@ -36,18 +35,12 @@
 	for _, f := range filesToWrite {
 		p := getOrCreateOutputDir(outputDir, ctx, f.Dir).Join(ctx, f.Basename)
 		if err := writeFile(ctx, p, f.Contents); err != nil {
-			fmt.Errorf("Failed to write %q (dir %q) due to %q", f.Basename, f.Dir, err)
+			panic(fmt.Errorf("Failed to write %q (dir %q) due to %q", f.Basename, f.Dir, err))
 		}
 		// if these generated files are modified, regenerate on next run.
 		generatedBuildFiles = append(generatedBuildFiles, p.String())
 	}
 
-	// The MANIFEST file contains the full list of files generated by bp2build, excluding itself.
-	// Its purpose is for downstream tools to understand the set of files converted by bp2build.
-	manifestFile := outputDir.Join(ctx, "MANIFEST")
-	writeFile(ctx, manifestFile, strings.Join(generatedBuildFiles, "\n"))
-	generatedBuildFiles = append(generatedBuildFiles, manifestFile.String())
-
 	return metrics
 }
 
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index 08790d1..bddc524 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -519,9 +519,7 @@
 	case reflect.Struct:
 		valueIsZero := true
 		for i := 0; i < value.NumField(); i++ {
-			if value.Field(i).CanSet() {
-				valueIsZero = valueIsZero && isZero(value.Field(i))
-			}
+			valueIsZero = valueIsZero && isZero(value.Field(i))
 		}
 		return valueIsZero
 	case reflect.Ptr:
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index aa8200b..0551a18 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -277,6 +277,31 @@
     static_deps_for_shared = [":b"],
 )`},
 		},
+		{
+			description:                        "cc_library non-configured version script",
+			moduleTypeUnderTest:                "cc_library",
+			moduleTypeUnderTestFactory:         cc.LibraryFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
+			depsMutators:                       []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+			dir:                                "foo/bar",
+			filesystem: map[string]string{
+				"foo/bar/Android.bp": `
+cc_library {
+    name: "a",
+    srcs: ["a.cpp"],
+    version_script: "v.map",
+    bazel_module: { bp2build_available: true },
+}
+`,
+			},
+			bp: soongCcLibraryPreamble,
+			expectedBazelTargets: []string{`cc_library(
+    name = "a",
+    copts = ["-Ifoo/bar"],
+    srcs = ["a.cpp"],
+    version_script = "v.map",
+)`},
+		},
 	}
 
 	dir := "."
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index e8235d5..bff9b07 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -746,6 +746,172 @@
     linkstatic = True,
 )`},
 		},
+		{
+			description:                        "cc_library_static 1 multilib srcs and exclude_srcs",
+			moduleTypeUnderTest:                "cc_library_static",
+			moduleTypeUnderTestFactory:         cc.LibraryStaticFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
+			depsMutators:                       []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+			filesystem: map[string]string{
+				"common.c":        "",
+				"for-lib32.c":     "",
+				"not-for-lib32.c": "",
+			},
+			bp: soongCcLibraryStaticPreamble + `
+cc_library_static {
+    name: "foo_static",
+    srcs: ["common.c", "not-for-*.c"],
+    multilib: {
+        lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
+    },
+} `,
+			expectedBazelTargets: []string{`cc_library_static(
+    name = "foo_static",
+    copts = ["-I."],
+    linkstatic = True,
+    srcs = ["common.c"] + select({
+        "//build/bazel/platforms/arch:arm": ["for-lib32.c"],
+        "//build/bazel/platforms/arch:x86": ["for-lib32.c"],
+        "//conditions:default": ["not-for-lib32.c"],
+    }),
+)`},
+		},
+		{
+			description:                        "cc_library_static 2 multilib srcs and exclude_srcs",
+			moduleTypeUnderTest:                "cc_library_static",
+			moduleTypeUnderTestFactory:         cc.LibraryStaticFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
+			depsMutators:                       []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+			filesystem: map[string]string{
+				"common.c":        "",
+				"for-lib32.c":     "",
+				"for-lib64.c":     "",
+				"not-for-lib32.c": "",
+				"not-for-lib64.c": "",
+			},
+			bp: soongCcLibraryStaticPreamble + `
+cc_library_static {
+    name: "foo_static2",
+    srcs: ["common.c", "not-for-*.c"],
+    multilib: {
+        lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
+        lib64: { srcs: ["for-lib64.c"], exclude_srcs: ["not-for-lib64.c"] },
+    },
+} `,
+			expectedBazelTargets: []string{`cc_library_static(
+    name = "foo_static2",
+    copts = ["-I."],
+    linkstatic = True,
+    srcs = ["common.c"] + select({
+        "//build/bazel/platforms/arch:arm": [
+            "for-lib32.c",
+            "not-for-lib64.c",
+        ],
+        "//build/bazel/platforms/arch:arm64": [
+            "for-lib64.c",
+            "not-for-lib32.c",
+        ],
+        "//build/bazel/platforms/arch:x86": [
+            "for-lib32.c",
+            "not-for-lib64.c",
+        ],
+        "//build/bazel/platforms/arch:x86_64": [
+            "for-lib64.c",
+            "not-for-lib32.c",
+        ],
+        "//conditions:default": [
+            "not-for-lib32.c",
+            "not-for-lib64.c",
+        ],
+    }),
+)`},
+		},
+		{
+			description:                        "cc_library_static arch and multilib srcs and exclude_srcs",
+			moduleTypeUnderTest:                "cc_library_static",
+			moduleTypeUnderTestFactory:         cc.LibraryStaticFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
+			depsMutators:                       []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+			filesystem: map[string]string{
+				"common.c":             "",
+				"for-arm.c":            "",
+				"for-arm64.c":          "",
+				"for-x86.c":            "",
+				"for-x86_64.c":         "",
+				"for-lib32.c":          "",
+				"for-lib64.c":          "",
+				"not-for-arm.c":        "",
+				"not-for-arm64.c":      "",
+				"not-for-x86.c":        "",
+				"not-for-x86_64.c":     "",
+				"not-for-lib32.c":      "",
+				"not-for-lib64.c":      "",
+				"not-for-everything.c": "",
+			},
+			bp: soongCcLibraryStaticPreamble + `
+cc_library_static {
+   name: "foo_static3",
+   srcs: ["common.c", "not-for-*.c"],
+   exclude_srcs: ["not-for-everything.c"],
+   arch: {
+       arm: { srcs: ["for-arm.c"], exclude_srcs: ["not-for-arm.c"] },
+       arm64: { srcs: ["for-arm64.c"], exclude_srcs: ["not-for-arm64.c"] },
+       x86: { srcs: ["for-x86.c"], exclude_srcs: ["not-for-x86.c"] },
+       x86_64: { srcs: ["for-x86_64.c"], exclude_srcs: ["not-for-x86_64.c"] },
+   },
+   multilib: {
+       lib32: { srcs: ["for-lib32.c"], exclude_srcs: ["not-for-lib32.c"] },
+       lib64: { srcs: ["for-lib64.c"], exclude_srcs: ["not-for-lib64.c"] },
+   },
+}`,
+			expectedBazelTargets: []string{`cc_library_static(
+    name = "foo_static3",
+    copts = ["-I."],
+    linkstatic = True,
+    srcs = ["common.c"] + select({
+        "//build/bazel/platforms/arch:arm": [
+            "for-arm.c",
+            "for-lib32.c",
+            "not-for-arm64.c",
+            "not-for-lib64.c",
+            "not-for-x86.c",
+            "not-for-x86_64.c",
+        ],
+        "//build/bazel/platforms/arch:arm64": [
+            "for-arm64.c",
+            "for-lib64.c",
+            "not-for-arm.c",
+            "not-for-lib32.c",
+            "not-for-x86.c",
+            "not-for-x86_64.c",
+        ],
+        "//build/bazel/platforms/arch:x86": [
+            "for-lib32.c",
+            "for-x86.c",
+            "not-for-arm.c",
+            "not-for-arm64.c",
+            "not-for-lib64.c",
+            "not-for-x86_64.c",
+        ],
+        "//build/bazel/platforms/arch:x86_64": [
+            "for-lib64.c",
+            "for-x86_64.c",
+            "not-for-arm.c",
+            "not-for-arm64.c",
+            "not-for-lib32.c",
+            "not-for-x86.c",
+        ],
+        "//conditions:default": [
+            "not-for-arm.c",
+            "not-for-arm64.c",
+            "not-for-lib32.c",
+            "not-for-lib64.c",
+            "not-for-x86.c",
+            "not-for-x86_64.c",
+        ],
+    }),
+)`},
+		},
 	}
 
 	dir := "."
diff --git a/bp2build/configurability.go b/bp2build/configurability.go
index 52afb55..95a2747 100644
--- a/bp2build/configurability.go
+++ b/bp2build/configurability.go
@@ -30,6 +30,11 @@
 	return value, archSelects, osSelects
 }
 
+func getLabelValue(label bazel.LabelAttribute) (reflect.Value, selects, selects) {
+	value := reflect.ValueOf(label.Value)
+	return value, nil, nil
+}
+
 func getLabelListValues(list bazel.LabelListAttribute) (reflect.Value, selects, selects) {
 	value := reflect.ValueOf(list.Value.Includes)
 	if !list.HasConfigurableValues() {
@@ -54,21 +59,30 @@
 func prettyPrintAttribute(v bazel.Attribute, indent int) (string, error) {
 	var value reflect.Value
 	var archSelects, osSelects selects
-
+	var defaultSelectValue string
 	switch list := v.(type) {
 	case bazel.StringListAttribute:
 		value, archSelects, osSelects = getStringListValues(list)
+		defaultSelectValue = "[]"
 	case bazel.LabelListAttribute:
 		value, archSelects, osSelects = getLabelListValues(list)
+		defaultSelectValue = "[]"
+	case bazel.LabelAttribute:
+		value, archSelects, osSelects = getLabelValue(list)
+		defaultSelectValue = "None"
 	default:
 		return "", fmt.Errorf("Not a supported Bazel attribute type: %s", v)
 	}
 
-	ret, err := prettyPrint(value, indent)
-	if err != nil {
-		return ret, err
-	}
+	ret := ""
+	if value.Kind() != reflect.Invalid {
+		s, err := prettyPrint(value, indent)
+		if err != nil {
+			return ret, err
+		}
 
+		ret += s
+	}
 	// Convenience function to append selects components to an attribute value.
 	appendSelects := func(selectsData selects, defaultValue, s string) (string, error) {
 		selectMap, err := prettyPrintSelectMap(selectsData, defaultValue, indent)
@@ -83,12 +97,12 @@
 		return s, nil
 	}
 
-	ret, err = appendSelects(archSelects, "[]", ret)
+	ret, err := appendSelects(archSelects, defaultSelectValue, ret)
 	if err != nil {
 		return "", err
 	}
 
-	ret, err = appendSelects(osSelects, "[]", ret)
+	ret, err = appendSelects(osSelects, defaultSelectValue, ret)
 	return ret, err
 }
 
diff --git a/bp2build/testing.go b/bp2build/testing.go
index 452f6ed..b925682 100644
--- a/bp2build/testing.go
+++ b/bp2build/testing.go
@@ -142,7 +142,7 @@
 
 		paths := bazel.MakeLabelListAttribute(android.BazelLabelForModuleSrc(ctx, m.props.Arch_paths))
 
-		for arch, props := range m.GetArchProperties(&customProps{}) {
+		for arch, props := range m.GetArchProperties(ctx, &customProps{}) {
 			if archProps, ok := props.(*customProps); ok && archProps.Arch_paths != nil {
 				paths.SetValueForArch(arch.Name, android.BazelLabelForModuleSrc(ctx, archProps.Arch_paths))
 			}
diff --git a/cc/androidmk.go b/cc/androidmk.go
index 70b5259..e58d166 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -580,20 +580,6 @@
 	entries.Class = "SHARED_LIBRARIES"
 }
 
-func (c *vendorPublicLibraryStubDecorator) AndroidMkEntries(ctx AndroidMkContext, entries *android.AndroidMkEntries) {
-	entries.Class = "SHARED_LIBRARIES"
-	entries.SubName = vendorPublicLibrarySuffix
-
-	entries.ExtraEntries = append(entries.ExtraEntries, func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
-		c.libraryDecorator.androidMkWriteExportedFlags(entries)
-		_, _, ext := android.SplitFileExt(entries.OutputFile.Path().Base())
-
-		entries.SetString("LOCAL_BUILT_MODULE_STEM", "$(LOCAL_MODULE)"+ext)
-		entries.SetBool("LOCAL_UNINSTALLABLE_MODULE", true)
-		entries.SetBool("LOCAL_NO_NOTICE_FILE", true)
-	})
-}
-
 func (p *prebuiltLinker) AndroidMkEntries(ctx AndroidMkContext, entries *android.AndroidMkEntries) {
 	entries.ExtraEntries = append(entries.ExtraEntries, func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
 		if p.properties.Check_elf_files != nil {
diff --git a/cc/bp2build.go b/cc/bp2build.go
index a4db79f..1433f6f 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -58,7 +58,7 @@
 		}
 	}
 
-	for _, p := range module.GetArchProperties(&BaseLinkerProperties{}) {
+	for _, p := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
 		// arch specific linker props
 		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
 			allDeps = append(allDeps, baseLinkerProps.Header_libs...)
@@ -198,7 +198,7 @@
 		copts.Value = append(copts.Value, includeFlag("."))
 	}
 
-	for arch, props := range module.GetArchProperties(&BaseCompilerProperties{}) {
+	for arch, props := range module.GetArchProperties(ctx, &BaseCompilerProperties{}) {
 		if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
 			// If there's arch specific srcs or exclude_srcs, generate a select entry for it.
 			// TODO(b/186153868): do this for OS specific srcs and exclude_srcs too.
@@ -215,7 +215,7 @@
 
 	// After going through all archs, delete the duplicate files in the arch
 	// values that are already in the base srcs.Value.
-	for arch, props := range module.GetArchProperties(&BaseCompilerProperties{}) {
+	for arch, props := range module.GetArchProperties(ctx, &BaseCompilerProperties{}) {
 		if _, ok := props.(*BaseCompilerProperties); ok {
 			srcs.SetValueForArch(arch.Name, bazel.SubtractBazelLabelList(srcs.GetValueForArch(arch.Name), srcs.Value))
 		}
@@ -246,15 +246,17 @@
 
 // Convenience struct to hold all attributes parsed from linker properties.
 type linkerAttributes struct {
-	deps     bazel.LabelListAttribute
-	linkopts bazel.StringListAttribute
+	deps          bazel.LabelListAttribute
+	linkopts      bazel.StringListAttribute
+	versionScript bazel.LabelAttribute
 }
 
-// bp2BuildParseLinkerProps creates a label list attribute containing the header library deps of a module, including
+// bp2BuildParseLinkerProps parses the linker properties of a module, including
 // configurable attribute values.
 func bp2BuildParseLinkerProps(ctx android.TopDownMutatorContext, module *Module) linkerAttributes {
 	var deps bazel.LabelListAttribute
 	var linkopts bazel.StringListAttribute
+	var versionScript bazel.LabelAttribute
 
 	for _, linkerProps := range module.linker.linkerProps() {
 		if baseLinkerProps, ok := linkerProps.(*BaseLinkerProperties); ok {
@@ -265,11 +267,15 @@
 			libs = android.SortedUniqueStrings(libs)
 			deps = bazel.MakeLabelListAttribute(android.BazelLabelForModuleDeps(ctx, libs))
 			linkopts.Value = baseLinkerProps.Ldflags
+
+			if baseLinkerProps.Version_script != nil {
+				versionScript.Value = android.BazelLabelForModuleSrcSingle(ctx, *baseLinkerProps.Version_script)
+			}
 			break
 		}
 	}
 
-	for arch, p := range module.GetArchProperties(&BaseLinkerProperties{}) {
+	for arch, p := range module.GetArchProperties(ctx, &BaseLinkerProperties{}) {
 		if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
 			libs := baseLinkerProps.Header_libs
 			libs = append(libs, baseLinkerProps.Export_header_lib_headers...)
@@ -278,6 +284,10 @@
 			libs = android.SortedUniqueStrings(libs)
 			deps.SetValueForArch(arch.Name, android.BazelLabelForModuleDeps(ctx, libs))
 			linkopts.SetValueForArch(arch.Name, baseLinkerProps.Ldflags)
+			if baseLinkerProps.Version_script != nil {
+				versionScript.SetValueForArch(arch.Name,
+					android.BazelLabelForModuleSrcSingle(ctx, *baseLinkerProps.Version_script))
+			}
 		}
 	}
 
@@ -294,8 +304,9 @@
 	}
 
 	return linkerAttributes{
-		deps:     deps,
-		linkopts: linkopts,
+		deps:          deps,
+		linkopts:      linkopts,
+		versionScript: versionScript,
 	}
 }
 
@@ -334,7 +345,7 @@
 	includeDirs = append(includeDirs, libraryDecorator.flagExporter.Properties.Export_include_dirs...)
 	includeDirsAttribute := bazel.MakeStringListAttribute(includeDirs)
 
-	for arch, props := range module.GetArchProperties(&FlagExporterProperties{}) {
+	for arch, props := range module.GetArchProperties(ctx, &FlagExporterProperties{}) {
 		if flagExporterProperties, ok := props.(*FlagExporterProperties); ok {
 			archIncludeDirs := flagExporterProperties.Export_system_include_dirs
 			archIncludeDirs = append(archIncludeDirs, flagExporterProperties.Export_include_dirs...)
diff --git a/cc/builder.go b/cc/builder.go
index ad7e1e6..0542015 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -126,15 +126,22 @@
 
 	_ = pctx.SourcePathVariable("stripPath", "build/soong/scripts/strip.sh")
 	_ = pctx.SourcePathVariable("xzCmd", "prebuilts/build-tools/${config.HostPrebuiltTag}/bin/xz")
+	_ = pctx.SourcePathVariable("createMiniDebugInfo", "prebuilts/build-tools/${config.HostPrebuiltTag}/bin/create_minidebuginfo")
 
 	// Rule to invoke `strip` (to discard symbols and data from object files).
 	strip = pctx.AndroidStaticRule("strip",
 		blueprint.RuleParams{
-			Depfile:     "${out}.d",
-			Deps:        blueprint.DepsGCC,
-			Command:     "XZ=$xzCmd CLANG_BIN=${config.ClangBin} $stripPath ${args} -i ${in} -o ${out} -d ${out}.d",
-			CommandDeps: []string{"$stripPath", "$xzCmd"},
-			Pool:        darwinStripPool,
+			Depfile: "${out}.d",
+			Deps:    blueprint.DepsGCC,
+			Command: "XZ=$xzCmd CREATE_MINIDEBUGINFO=$createMiniDebugInfo CLANG_BIN=${config.ClangBin} $stripPath ${args} -i ${in} -o ${out} -d ${out}.d",
+			CommandDeps: func() []string {
+				if runtime.GOOS != "darwin" {
+					return []string{"$stripPath", "$xzCmd", "$createMiniDebugInfo"}
+				} else {
+					return []string{"$stripPath", "$xzCmd"}
+				}
+			}(),
+			Pool: darwinStripPool,
 		},
 		"args", "crossCompile")
 
diff --git a/cc/cc.go b/cc/cc.go
index 3ba5366..16a49d3 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -447,6 +447,10 @@
 
 	// IsVNDKProduct is set if a VNDK module sets the product_available property.
 	IsVNDKProduct bool `blueprint:"mutated"`
+
+	// IsVendorPublicLibrary is set for the core and product variants of a library that has
+	// vendor_public_library stubs.
+	IsVendorPublicLibrary bool `blueprint:"mutated"`
 }
 
 // ModuleContextIntf is an interface (on a module context helper) consisting of functions related
@@ -475,6 +479,7 @@
 	isVndk() bool
 	isVndkSp() bool
 	IsVndkExt() bool
+	IsVendorPublicLibrary() bool
 	inProduct() bool
 	inVendor() bool
 	inRamdisk() bool
@@ -1126,6 +1131,16 @@
 	return lib != nil && (lib.hasLLNDKStubs() || lib.hasLLNDKHeaders())
 }
 
+func (m *Module) NeedsVendorPublicLibraryVariants() bool {
+	lib := moduleLibraryInterface(m)
+	return lib != nil && (lib.hasVendorPublicLibrary())
+}
+
+// IsVendorPublicLibrary returns true for vendor public libraries.
+func (c *Module) IsVendorPublicLibrary() bool {
+	return c.VendorProperties.IsVendorPublicLibrary
+}
+
 // isImplementationForLLNDKPublic returns true for any variant of a cc_library that has LLNDK stubs
 // and does not set llndk.vendor_available: false.
 func (c *Module) isImplementationForLLNDKPublic() bool {
@@ -1437,6 +1452,10 @@
 	return ctx.mod.IsVndkExt()
 }
 
+func (ctx *moduleContextImpl) IsVendorPublicLibrary() bool {
+	return ctx.mod.IsVendorPublicLibrary()
+}
+
 func (ctx *moduleContextImpl) mustUseVendorVariant() bool {
 	return ctx.mod.MustUseVendorVariant()
 }
@@ -1599,6 +1618,8 @@
 		// added for product variant only when we have vendor and product variants with core
 		// variant. The suffix is not added for vendor-only or product-only module.
 		c.Properties.SubName += c.getNameSuffixWithVndkVersion(actx)
+	} else if c.IsVendorPublicLibrary() {
+		c.Properties.SubName += vendorPublicLibrarySuffix
 	} else if _, ok := c.linker.(*vndkPrebuiltLibraryDecorator); ok {
 		// .vendor suffix is added for backward compatibility with VNDK snapshot whose names with
 		// such suffixes are already hard-coded in prebuilts/vndk/.../Android.bp.
@@ -2043,8 +2064,6 @@
 		// The caller can then know to add the variantLibs dependencies differently from the
 		// nonvariantLibs
 
-		vendorPublicLibraries := vendorPublicLibraries(actx.Config())
-
 		rewriteLibs := func(list []string) (nonvariantLibs []string, variantLibs []string) {
 			variantLibs = []string{}
 			nonvariantLibs = []string{}
@@ -2055,16 +2074,6 @@
 					nonvariantLibs = append(nonvariantLibs, rewriteSnapshotLib(entry, getSnapshot().SharedLibs))
 				} else if ctx.useSdk() && inList(name, *getNDKKnownLibs(ctx.Config())) {
 					variantLibs = append(variantLibs, name+ndkLibrarySuffix)
-				} else if (ctx.Platform() || ctx.ProductSpecific()) && inList(name, *vendorPublicLibraries) {
-					vendorPublicLib := name + vendorPublicLibrarySuffix
-					if actx.OtherModuleExists(vendorPublicLib) {
-						nonvariantLibs = append(nonvariantLibs, vendorPublicLib)
-					} else {
-						// This can happen if vendor_public_library module is defined in a
-						// namespace that isn't visible to the current module. In that case,
-						// link to the original library.
-						nonvariantLibs = append(nonvariantLibs, name)
-					}
 				} else if ctx.useVndk() {
 					nonvariantLibs = append(nonvariantLibs, rewriteSnapshotLib(entry, getSnapshot().SharedLibs))
 				} else {
@@ -2921,13 +2930,9 @@
 }
 
 func MakeLibName(ctx android.ModuleContext, c LinkableInterface, ccDep LinkableInterface, depName string) string {
-
-	vendorPublicLibraries := vendorPublicLibraries(ctx.Config())
-
 	libName := baseLibName(depName)
 	ccDepModule, _ := ccDep.(*Module)
 	isLLndk := ccDepModule != nil && ccDepModule.IsLlndk()
-	isVendorPublicLib := inList(libName, *vendorPublicLibraries)
 	nonSystemVariantsExist := ccDep.HasNonSystemVariants() || isLLndk
 
 	if ccDepModule != nil {
@@ -2949,8 +2954,6 @@
 		// The vendor and product modules in Make will have been renamed to not conflict with the
 		// core module, so update the dependency name here accordingly.
 		return libName + ccDep.SubName()
-	} else if (ctx.Platform() || ctx.ProductSpecific()) && isVendorPublicLib {
-		return libName + vendorPublicLibrarySuffix
 	} else if ccDep.InRamdisk() && !ccDep.OnlyInRamdisk() {
 		return libName + ramdiskSuffix
 	} else if ccDep.InVendorRamdisk() && !ccDep.OnlyInVendorRamdisk() {
diff --git a/cc/genrule.go b/cc/genrule.go
index ca4fda7..82d7205 100644
--- a/cc/genrule.go
+++ b/cc/genrule.go
@@ -75,6 +75,10 @@
 	return Bool(g.Vendor_ramdisk_available)
 }
 
+func (g *GenruleExtraProperties) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (g *GenruleExtraProperties) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	// If the build is using a snapshot, the recovery variant under AOSP directories
 	// is not needed.
diff --git a/cc/image.go b/cc/image.go
index 5593afc..5d41717 100644
--- a/cc/image.go
+++ b/cc/image.go
@@ -452,6 +452,17 @@
 		if productVndkVersion != "" {
 			productVariants = append(productVariants, productVndkVersion)
 		}
+	} else if m.NeedsVendorPublicLibraryVariants() {
+		// A vendor public library has the implementation on /vendor, with stub variants
+		// for system and product.
+		coreVariantNeeded = true
+		vendorVariants = append(vendorVariants, boardVndkVersion)
+		if platformVndkVersion != "" {
+			productVariants = append(productVariants, platformVndkVersion)
+		}
+		if productVndkVersion != "" {
+			productVariants = append(productVariants, productVndkVersion)
+		}
 	} else if boardVndkVersion == "" {
 		// If the device isn't compiling against the VNDK, we always
 		// use the core mode.
@@ -597,6 +608,10 @@
 	return c.Properties.VendorRamdiskVariantNeeded
 }
 
+func (c *Module) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (c *Module) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	return c.Properties.RecoveryVariantNeeded
 }
@@ -677,4 +692,9 @@
 		m.Properties.VndkVersion = strings.TrimPrefix(variant, ProductVariationPrefix)
 		squashProductSrcs(m)
 	}
+
+	if c.NeedsVendorPublicLibraryVariants() &&
+		(variant == android.CoreVariation || strings.HasPrefix(variant, ProductVariationPrefix)) {
+		c.VendorProperties.IsVendorPublicLibrary = true
+	}
 }
diff --git a/cc/library.go b/cc/library.go
index 4cd1b09..7b631fa 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -120,6 +120,9 @@
 	// If this is an LLNDK library, properties to describe the LLNDK stubs.  Will be copied from
 	// the module pointed to by llndk_stubs if it is set.
 	Llndk llndkLibraryProperties
+
+	// If this is a vendor public library, properties to describe the vendor public library stubs.
+	Vendor_public_library vendorPublicLibraryProperties
 }
 
 // StaticProperties is a properties stanza to affect only attributes of the "static" variants of a
@@ -225,6 +228,7 @@
 	User_link_flags        bazel.StringListAttribute
 	Includes               bazel.StringListAttribute
 	Static_deps_for_shared bazel.LabelListAttribute
+	Version_script         bazel.LabelAttribute
 }
 
 type bazelCcLibrary struct {
@@ -255,6 +259,14 @@
 		return
 	}
 
+	// For some cc_library modules, their static variants are ready to be
+	// converted, but not their shared variants. For these modules, delegate to
+	// the cc_library_static bp2build converter temporarily instead.
+	if android.GenerateCcLibraryStaticOnly(ctx) {
+		ccLibraryStaticBp2BuildInternal(ctx, m)
+		return
+	}
+
 	sharedAttrs := bp2BuildParseSharedProps(ctx, m)
 	staticAttrs := bp2BuildParseStaticProps(ctx, m)
 	compilerAttrs := bp2BuildParseCompilerProps(ctx, m)
@@ -270,6 +282,7 @@
 		Copts:                  compilerAttrs.copts,
 		Linkopts:               linkerAttrs.linkopts,
 		Deps:                   linkerAttrs.deps,
+		Version_script:         linkerAttrs.versionScript,
 		Static_deps_for_shared: sharedAttrs.staticDeps,
 		Includes:               exportedIncludes,
 	}
@@ -786,6 +799,13 @@
 		}
 		return objs
 	}
+	if ctx.IsVendorPublicLibrary() {
+		objs, versionScript := compileStubLibrary(ctx, flags, String(library.Properties.Vendor_public_library.Symbol_file), "current", "")
+		if !Bool(library.Properties.Vendor_public_library.Unversioned) {
+			library.versionScriptPath = android.OptionalPathForPath(versionScript)
+		}
+		return objs
+	}
 	if library.buildStubs() {
 		symbolFile := String(library.Properties.Stubs.Symbol_file)
 		if symbolFile != "" && !strings.HasSuffix(symbolFile, ".map.txt") {
@@ -883,6 +903,7 @@
 	implementationModuleName(name string) string
 	hasLLNDKStubs() bool
 	hasLLNDKHeaders() bool
+	hasVendorPublicLibrary() bool
 }
 
 var _ libraryInterface = (*libraryDecorator)(nil)
@@ -978,6 +999,12 @@
 		deps.ReexportHeaderLibHeaders = append([]string(nil), library.Properties.Llndk.Export_llndk_headers...)
 		return deps
 	}
+	if ctx.IsVendorPublicLibrary() {
+		headers := library.Properties.Vendor_public_library.Export_public_headers
+		deps.HeaderLibs = append([]string(nil), headers...)
+		deps.ReexportHeaderLibHeaders = append([]string(nil), headers...)
+		return deps
+	}
 
 	if library.static() {
 		// Compare with nil because an empty list needs to be propagated.
@@ -1434,6 +1461,14 @@
 		}
 	}
 
+	if ctx.IsVendorPublicLibrary() {
+		// override the module's export_include_dirs with vendor_public_library.override_export_include_dirs
+		// if it is set.
+		if override := library.Properties.Vendor_public_library.Override_export_include_dirs; override != nil {
+			library.flagExporter.Properties.Export_include_dirs = override
+		}
+	}
+
 	// Linking this library consists of linking `deps.Objs` (.o files in dependencies
 	// of this library), together with `objs` (.o files created by compiling this
 	// library).
@@ -1695,6 +1730,12 @@
 	return Bool(library.Properties.Llndk.Llndk_headers)
 }
 
+// hasVendorPublicLibrary returns true if this cc_library module has a variant that will build
+// vendor public library stubs.
+func (library *libraryDecorator) hasVendorPublicLibrary() bool {
+	return String(library.Properties.Vendor_public_library.Symbol_file) != ""
+}
+
 func (library *libraryDecorator) implementationModuleName(name string) string {
 	return name
 }
@@ -1994,11 +2035,12 @@
 
 	m := mctx.Module().(*Module)
 	isLLNDK := m.IsLlndk()
+	isVendorPublicLibrary := m.IsVendorPublicLibrary()
 
 	modules := mctx.CreateLocalVariations(variants...)
 	for i, m := range modules {
 
-		if variants[i] != "" || isLLNDK {
+		if variants[i] != "" || isLLNDK || isVendorPublicLibrary {
 			// A stubs or LLNDK stubs variant.
 			c := m.(*Module)
 			c.sanitize = nil
@@ -2171,6 +2213,28 @@
 	return module
 }
 
+func ccLibraryStaticBp2BuildInternal(ctx android.TopDownMutatorContext, module *Module) {
+	compilerAttrs := bp2BuildParseCompilerProps(ctx, module)
+	linkerAttrs := bp2BuildParseLinkerProps(ctx, module)
+	exportedIncludes := bp2BuildParseExportedIncludes(ctx, module)
+
+	attrs := &bazelCcLibraryStaticAttributes{
+		Copts:      compilerAttrs.copts,
+		Srcs:       compilerAttrs.srcs,
+		Deps:       linkerAttrs.deps,
+		Linkopts:   linkerAttrs.linkopts,
+		Linkstatic: true,
+		Includes:   exportedIncludes,
+	}
+
+	props := bazel.BazelTargetModuleProperties{
+		Rule_class:        "cc_library_static",
+		Bzl_load_location: "//build/bazel/rules:cc_library_static.bzl",
+	}
+
+	ctx.CreateBazelTargetModule(BazelCcLibraryStaticFactory, module.Name(), props, attrs)
+}
+
 func CcLibraryStaticBp2Build(ctx android.TopDownMutatorContext) {
 	module, ok := ctx.Module().(*Module)
 	if !ok {
@@ -2184,24 +2248,7 @@
 		return
 	}
 
-	compilerAttrs := bp2BuildParseCompilerProps(ctx, module)
-	linkerAttrs := bp2BuildParseLinkerProps(ctx, module)
-	exportedIncludes := bp2BuildParseExportedIncludes(ctx, module)
-
-	attrs := &bazelCcLibraryStaticAttributes{
-		Copts:      compilerAttrs.copts,
-		Srcs:       compilerAttrs.srcs,
-		Deps:       linkerAttrs.deps,
-		Linkstatic: true,
-		Includes:   exportedIncludes,
-	}
-
-	props := bazel.BazelTargetModuleProperties{
-		Rule_class:        "cc_library_static",
-		Bzl_load_location: "//build/bazel/rules:cc_library_static.bzl",
-	}
-
-	ctx.CreateBazelTargetModule(BazelCcLibraryStaticFactory, module.Name(), props, attrs)
+	ccLibraryStaticBp2BuildInternal(ctx, module)
 }
 
 func (m *bazelCcLibraryStatic) Name() string {
diff --git a/cc/linkable.go b/cc/linkable.go
index 17526b4..40a9d8b 100644
--- a/cc/linkable.go
+++ b/cc/linkable.go
@@ -109,6 +109,9 @@
 	// NeedsLlndkVariants returns true if this module has LLNDK stubs or provides LLNDK headers.
 	NeedsLlndkVariants() bool
 
+	// NeedsVendorPublicLibraryVariants returns true if this module has vendor public library stubs.
+	NeedsVendorPublicLibraryVariants() bool
+
 	UseVndk() bool
 	MustUseVendorVariant() bool
 	IsVndk() bool
diff --git a/cc/makevars.go b/cc/makevars.go
index 923472a..2b7bb9b 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -71,8 +71,6 @@
 }
 
 func makeVarsProvider(ctx android.MakeVarsContext) {
-	vendorPublicLibraries := vendorPublicLibraries(ctx.Config())
-
 	ctx.Strict("LLVM_RELEASE_VERSION", "${config.ClangShortVersion}")
 	ctx.Strict("LLVM_PREBUILTS_VERSION", "${config.ClangVersion}")
 	ctx.Strict("LLVM_PREBUILTS_BASE", "${config.ClangBase}")
@@ -106,7 +104,7 @@
 	ctx.VisitAllModules(func(module android.Module) {
 		if ccModule, ok := module.(*Module); ok {
 			baseName := ccModule.BaseModuleName()
-			if inList(baseName, *vendorPublicLibraries) && module.ExportedToMake() {
+			if ccModule.IsVendorPublicLibrary() && module.ExportedToMake() {
 				if !inList(baseName, exportedVendorPublicLibraries) {
 					exportedVendorPublicLibraries = append(exportedVendorPublicLibraries, baseName)
 				}
@@ -153,6 +151,7 @@
 
 	ctx.Strict("SOONG_STRIP_PATH", "${stripPath}")
 	ctx.Strict("XZ", "${xzCmd}")
+	ctx.Strict("CREATE_MINIDEBUGINFO", "${createMiniDebugInfo}")
 
 	includeFlags, err := ctx.Eval("${config.CommonGlobalIncludes}")
 	if err != nil {
diff --git a/cc/snapshot_prebuilt.go b/cc/snapshot_prebuilt.go
index c12ad79..885a0ce 100644
--- a/cc/snapshot_prebuilt.go
+++ b/cc/snapshot_prebuilt.go
@@ -308,6 +308,10 @@
 	return false
 }
 
+func (s *snapshot) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (s *snapshot) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	return false
 }
diff --git a/cc/testing.go b/cc/testing.go
index ca6a0fa..15f7ebb 100644
--- a/cc/testing.go
+++ b/cc/testing.go
@@ -556,7 +556,6 @@
 		ctx.RegisterModuleType("cc_fuzz", FuzzFactory)
 		ctx.RegisterModuleType("cc_test", TestFactory)
 		ctx.RegisterModuleType("cc_test_library", TestLibraryFactory)
-		ctx.RegisterModuleType("vendor_public_library", vendorPublicLibraryFactory)
 		ctx.RegisterModuleType("vndk_prebuilt_shared", VndkPrebuiltSharedFactory)
 
 		RegisterVndkLibraryTxtTypes(ctx)
@@ -672,7 +671,6 @@
 	ctx.RegisterModuleType("cc_fuzz", FuzzFactory)
 	ctx.RegisterModuleType("cc_test", TestFactory)
 	ctx.RegisterModuleType("cc_test_library", TestLibraryFactory)
-	ctx.RegisterModuleType("vendor_public_library", vendorPublicLibraryFactory)
 	ctx.RegisterModuleType("filegroup", android.FileGroupFactory)
 	ctx.RegisterModuleType("vndk_prebuilt_shared", VndkPrebuiltSharedFactory)
 
diff --git a/cc/vendor_public_library.go b/cc/vendor_public_library.go
index 394e322..65a2b0c 100644
--- a/cc/vendor_public_library.go
+++ b/cc/vendor_public_library.go
@@ -14,26 +14,10 @@
 
 package cc
 
-import (
-	"strings"
-	"sync"
-
-	"android/soong/android"
-)
-
 var (
 	vendorPublicLibrarySuffix = ".vendorpublic"
-
-	vendorPublicLibrariesKey  = android.NewOnceKey("vendorPublicLibraries")
-	vendorPublicLibrariesLock sync.Mutex
 )
 
-func vendorPublicLibraries(config android.Config) *[]string {
-	return config.Once(vendorPublicLibrariesKey, func() interface{} {
-		return &[]string{}
-	}).(*[]string)
-}
-
 // Creates a stub shared library for a vendor public library. Vendor public libraries
 // are vendor libraries (owned by them and installed to /vendor partition) that are
 // exposed to Android apps via JNI. The libraries are made public by being listed in
@@ -64,105 +48,9 @@
 
 	// list of header libs to re-export include directories from.
 	Export_public_headers []string `android:"arch_variant"`
-}
 
-type vendorPublicLibraryStubDecorator struct {
-	*libraryDecorator
-
-	Properties vendorPublicLibraryProperties
-
-	versionScriptPath android.ModuleGenPath
-}
-
-func (stub *vendorPublicLibraryStubDecorator) Name(name string) string {
-	return name + vendorPublicLibrarySuffix
-}
-
-func (stub *vendorPublicLibraryStubDecorator) compilerInit(ctx BaseModuleContext) {
-	stub.baseCompiler.compilerInit(ctx)
-
-	name := ctx.baseModuleName()
-	if strings.HasSuffix(name, vendorPublicLibrarySuffix) {
-		ctx.PropertyErrorf("name", "Do not append %q manually, just use the base name", vendorPublicLibrarySuffix)
-	}
-
-	vendorPublicLibrariesLock.Lock()
-	defer vendorPublicLibrariesLock.Unlock()
-	vendorPublicLibraries := vendorPublicLibraries(ctx.Config())
-	for _, lib := range *vendorPublicLibraries {
-		if lib == name {
-			return
-		}
-	}
-	*vendorPublicLibraries = append(*vendorPublicLibraries, name)
-}
-
-func (stub *vendorPublicLibraryStubDecorator) compilerFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags {
-	flags = stub.baseCompiler.compilerFlags(ctx, flags, deps)
-	return addStubLibraryCompilerFlags(flags)
-}
-
-func (stub *vendorPublicLibraryStubDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) Objects {
-	objs, versionScript := compileStubLibrary(ctx, flags, String(stub.Properties.Symbol_file), "current", "")
-	stub.versionScriptPath = versionScript
-	return objs
-}
-
-func (stub *vendorPublicLibraryStubDecorator) linkerDeps(ctx DepsContext, deps Deps) Deps {
-	headers := stub.Properties.Export_public_headers
-	deps.HeaderLibs = append(deps.HeaderLibs, headers...)
-	deps.ReexportHeaderLibHeaders = append(deps.ReexportHeaderLibHeaders, headers...)
-	return deps
-}
-
-func (stub *vendorPublicLibraryStubDecorator) linkerFlags(ctx ModuleContext, flags Flags) Flags {
-	stub.libraryDecorator.libName = strings.TrimSuffix(ctx.ModuleName(), vendorPublicLibrarySuffix)
-	return stub.libraryDecorator.linkerFlags(ctx, flags)
-}
-
-func (stub *vendorPublicLibraryStubDecorator) link(ctx ModuleContext, flags Flags, deps PathDeps,
-	objs Objects) android.Path {
-	if !Bool(stub.Properties.Unversioned) {
-		linkerScriptFlag := "-Wl,--version-script," + stub.versionScriptPath.String()
-		flags.Local.LdFlags = append(flags.Local.LdFlags, linkerScriptFlag)
-		flags.LdFlagsDeps = append(flags.LdFlagsDeps, stub.versionScriptPath)
-	}
-	return stub.libraryDecorator.link(ctx, flags, deps, objs)
-}
-
-// vendor_public_library creates a stub shared library for a vendor public
-// library. This stub library is a build-time only artifact that provides
-// symbols that are exposed from a vendor public library. Example:
-//
-//    vendor_public_library {
-//        name: "libfoo",
-//        symbol_file: "libfoo.map.txt",
-//        export_public_headers: ["libfoo_headers"],
-//    }
-func vendorPublicLibraryFactory() android.Module {
-	module, library := NewLibrary(android.DeviceSupported)
-	library.BuildOnlyShared()
-	module.stl = nil
-	module.sanitize = nil
-	library.disableStripping()
-
-	stub := &vendorPublicLibraryStubDecorator{
-		libraryDecorator: library,
-	}
-	module.compiler = stub
-	module.linker = stub
-	module.installer = nil
-
-	module.AddProperties(
-		&stub.Properties,
-		&module.VendorProperties,
-		&library.MutatedProperties,
-		&library.flagExporter.Properties)
-
-	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibBoth)
-	return module
-}
-
-func init() {
-	android.RegisterModuleType("vendor_public_library", vendorPublicLibraryFactory)
+	// list of directories relative to the Blueprints file that willbe added to the include path
+	// (using -I) for any module that links against the LLNDK variant of this module, replacing
+	// any that were listed outside the llndk clause.
+	Override_export_include_dirs []string
 }
diff --git a/cc/vendor_public_library_test.go b/cc/vendor_public_library_test.go
index 9f2accf..01959b4 100644
--- a/cc/vendor_public_library_test.go
+++ b/cc/vendor_public_library_test.go
@@ -26,18 +26,16 @@
 		product_available: true,
 		export_include_dirs: ["my_include"],
 	}
-	vendor_public_library {
-		name: "libvendorpublic",
-		product_available: true,
-		symbol_file: "",
-		export_public_headers: ["libvendorpublic_headers"],
-	}
 	cc_library {
 		name: "libvendorpublic",
 		srcs: ["foo.c"],
 		vendor: true,
 		no_libcrt: true,
 		nocrt: true,
+		vendor_public_library: {
+			symbol_file: "libvendorpublic.map.txt",
+			export_public_headers: ["libvendorpublic_headers"],
+		},
 	}
 
 	cc_library {
@@ -81,7 +79,7 @@
 	// test if libsystem is linked to the stub
 	ld := ctx.ModuleForTests("libsystem", coreVariant).Rule("ld")
 	libflags := ld.Args["libFlags"]
-	stubPaths := getOutputPaths(ctx, coreVariant, []string{"libvendorpublic" + vendorPublicLibrarySuffix})
+	stubPaths := getOutputPaths(ctx, coreVariant, []string{"libvendorpublic"})
 	if !strings.Contains(libflags, stubPaths[0].String()) {
 		t.Errorf("libflags for libsystem must contain %#v, but was %#v", stubPaths[0], libflags)
 	}
@@ -89,7 +87,7 @@
 	// test if libsystem is linked to the stub
 	ld = ctx.ModuleForTests("libproduct", productVariant).Rule("ld")
 	libflags = ld.Args["libFlags"]
-	stubPaths = getOutputPaths(ctx, productVariant, []string{"libvendorpublic" + vendorPublicLibrarySuffix})
+	stubPaths = getOutputPaths(ctx, productVariant, []string{"libvendorpublic"})
 	if !strings.Contains(libflags, stubPaths[0].String()) {
 		t.Errorf("libflags for libproduct must contain %#v, but was %#v", stubPaths[0], libflags)
 	}
diff --git a/cmd/run_with_timeout/Android.bp b/cmd/run_with_timeout/Android.bp
new file mode 100644
index 0000000..76262cc
--- /dev/null
+++ b/cmd/run_with_timeout/Android.bp
@@ -0,0 +1,27 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+blueprint_go_binary {
+    name: "run_with_timeout",
+    srcs: [
+        "run_with_timeout.go",
+    ],
+    testSrcs: [
+        "run_with_timeout_test.go",
+    ],
+}
diff --git a/cmd/run_with_timeout/run_with_timeout.go b/cmd/run_with_timeout/run_with_timeout.go
new file mode 100644
index 0000000..f2caaab
--- /dev/null
+++ b/cmd/run_with_timeout/run_with_timeout.go
@@ -0,0 +1,143 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// run_with_timeout is a utility that can kill a wrapped command after a configurable timeout,
+// optionally running a command to collect debugging information first.
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"sync"
+	"syscall"
+	"time"
+)
+
+var (
+	timeout      = flag.Duration("timeout", 0, "time after which to kill command (example: 60s)")
+	onTimeoutCmd = flag.String("on_timeout", "", "command to run with `PID=<pid> sh -c` after timeout.")
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: %s [--timeout N] [--on_timeout CMD] -- command [args...]\n", os.Args[0])
+	flag.PrintDefaults()
+	fmt.Fprintln(os.Stderr, "run_with_timeout is a utility that can kill a wrapped command after a configurable timeout,")
+	fmt.Fprintln(os.Stderr, "optionally running a command to collect debugging information first.")
+
+	os.Exit(2)
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+
+	if flag.NArg() < 1 {
+		fmt.Fprintln(os.Stderr, "command is required")
+		usage()
+	}
+
+	err := runWithTimeout(flag.Arg(0), flag.Args()[1:], *timeout, *onTimeoutCmd,
+		os.Stdin, os.Stdout, os.Stderr)
+	if err != nil {
+		if exitErr, ok := err.(*exec.ExitError); ok {
+			fmt.Fprintln(os.Stderr, "process exited with error:", exitErr.Error())
+		} else {
+			fmt.Fprintln(os.Stderr, "error:", err.Error())
+		}
+		os.Exit(1)
+	}
+}
+
+// concurrentWriter wraps a writer to make it thread-safe to call Write.
+type concurrentWriter struct {
+	w io.Writer
+	sync.Mutex
+}
+
+// Write writes the data to the wrapped writer with a lock to allow for concurrent calls.
+func (c *concurrentWriter) Write(data []byte) (n int, err error) {
+	c.Lock()
+	defer c.Unlock()
+	if c.w == nil {
+		return 0, nil
+	}
+	return c.w.Write(data)
+}
+
+// Close ends the concurrentWriter, causing future calls to Write to be no-ops.  It does not close
+// the underlying writer.
+func (c *concurrentWriter) Close() {
+	c.Lock()
+	defer c.Unlock()
+	c.w = nil
+}
+
+func runWithTimeout(command string, args []string, timeout time.Duration, onTimeoutCmdStr string,
+	stdin io.Reader, stdout, stderr io.Writer) error {
+	cmd := exec.Command(command, args...)
+
+	// Wrap the writers in a locking writer so that cmd and onTimeoutCmd don't try to write to
+	// stdout or stderr concurrently.
+	concurrentStdout := &concurrentWriter{w: stdout}
+	concurrentStderr := &concurrentWriter{w: stderr}
+	defer concurrentStdout.Close()
+	defer concurrentStderr.Close()
+
+	cmd.Stdin, cmd.Stdout, cmd.Stderr = stdin, concurrentStdout, concurrentStderr
+	err := cmd.Start()
+	if err != nil {
+		return err
+	}
+
+	// waitCh will signal the subprocess exited.
+	waitCh := make(chan error)
+	go func() {
+		waitCh <- cmd.Wait()
+	}()
+
+	// timeoutCh will signal the subprocess timed out if timeout was set.
+	var timeoutCh <-chan time.Time = make(chan time.Time)
+	if timeout > 0 {
+		timeoutCh = time.After(timeout)
+	}
+
+	select {
+	case err := <-waitCh:
+		if exitErr, ok := err.(*exec.ExitError); ok {
+			return fmt.Errorf("process exited with error: %w", exitErr)
+		}
+		return err
+	case <-timeoutCh:
+		// Continue below.
+	}
+
+	// Process timed out before exiting.
+	defer cmd.Process.Signal(syscall.SIGKILL)
+
+	if onTimeoutCmdStr != "" {
+		onTimeoutCmd := exec.Command("sh", "-c", onTimeoutCmdStr)
+		onTimeoutCmd.Stdin, onTimeoutCmd.Stdout, onTimeoutCmd.Stderr = stdin, concurrentStdout, concurrentStderr
+		onTimeoutCmd.Env = append(os.Environ(), fmt.Sprintf("PID=%d", cmd.Process.Pid))
+		err := onTimeoutCmd.Run()
+		if err != nil {
+			return fmt.Errorf("on_timeout command %q exited with error: %w", onTimeoutCmdStr, err)
+		}
+	}
+
+	return fmt.Errorf("timed out after %s", timeout.String())
+}
diff --git a/cmd/run_with_timeout/run_with_timeout_test.go b/cmd/run_with_timeout/run_with_timeout_test.go
new file mode 100644
index 0000000..aebd336
--- /dev/null
+++ b/cmd/run_with_timeout/run_with_timeout_test.go
@@ -0,0 +1,94 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"bytes"
+	"io"
+	"testing"
+	"time"
+)
+
+func Test_runWithTimeout(t *testing.T) {
+	type args struct {
+		command      string
+		args         []string
+		timeout      time.Duration
+		onTimeoutCmd string
+		stdin        io.Reader
+	}
+	tests := []struct {
+		name       string
+		args       args
+		wantStdout string
+		wantStderr string
+		wantErr    bool
+	}{
+		{
+			name: "no timeout",
+			args: args{
+				command: "echo",
+				args:    []string{"foo"},
+			},
+			wantStdout: "foo\n",
+		},
+		{
+			name: "timeout not reached",
+			args: args{
+				command: "echo",
+				args:    []string{"foo"},
+				timeout: 1 * time.Second,
+			},
+			wantStdout: "foo\n",
+		},
+		{
+			name: "timed out",
+			args: args{
+				command: "sh",
+				args:    []string{"-c", "sleep 1 && echo foo"},
+				timeout: 1 * time.Millisecond,
+			},
+			wantErr: true,
+		},
+		{
+			name: "on_timeout command",
+			args: args{
+				command:      "sh",
+				args:         []string{"-c", "sleep 1 && echo foo"},
+				timeout:      1 * time.Millisecond,
+				onTimeoutCmd: "echo bar",
+			},
+			wantStdout: "bar\n",
+			wantErr:    true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stdout := &bytes.Buffer{}
+			stderr := &bytes.Buffer{}
+			err := runWithTimeout(tt.args.command, tt.args.args, tt.args.timeout, tt.args.onTimeoutCmd, tt.args.stdin, stdout, stderr)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("runWithTimeout() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if gotStdout := stdout.String(); gotStdout != tt.wantStdout {
+				t.Errorf("runWithTimeout() gotStdout = %v, want %v", gotStdout, tt.wantStdout)
+			}
+			if gotStderr := stderr.String(); gotStderr != tt.wantStderr {
+				t.Errorf("runWithTimeout() gotStderr = %v, want %v", gotStderr, tt.wantStderr)
+			}
+		})
+	}
+}
diff --git a/dexpreopt/dexpreopt.go b/dexpreopt/dexpreopt.go
index 3848205..628197c 100644
--- a/dexpreopt/dexpreopt.go
+++ b/dexpreopt/dexpreopt.go
@@ -134,7 +134,8 @@
 	profileInstalledPath := module.DexLocation + ".prof"
 
 	if !module.ProfileIsTextListing {
-		rule.Command().FlagWithOutput("touch ", profilePath)
+		rule.Command().Text("rm -f").Output(profilePath)
+		rule.Command().Text("touch").Output(profilePath)
 	}
 
 	cmd := rule.Command().
@@ -174,7 +175,8 @@
 	profileInstalledPath := module.DexLocation + ".bprof"
 
 	if !module.ProfileIsTextListing {
-		rule.Command().FlagWithOutput("touch ", profilePath)
+		rule.Command().Text("rm -f").Output(profilePath)
+		rule.Command().Text("touch").Output(profilePath)
 	}
 
 	cmd := rule.Command().
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index 6e502b7..de9dc45 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -54,6 +54,7 @@
 	ctx.RegisterModuleType("prebuilt_font", PrebuiltFontFactory)
 	ctx.RegisterModuleType("prebuilt_firmware", PrebuiltFirmwareFactory)
 	ctx.RegisterModuleType("prebuilt_dsp", PrebuiltDSPFactory)
+	ctx.RegisterModuleType("prebuilt_rfsa", PrebuiltRFSAFactory)
 }
 
 var PrepareForTestWithPrebuiltEtc = android.FixtureRegisterWithContext(RegisterPrebuiltEtcBuildComponents)
@@ -84,6 +85,9 @@
 	// the recovery variant instead.
 	Vendor_ramdisk_available *bool
 
+	// Make this module available when building for debug ramdisk.
+	Debug_ramdisk_available *bool
+
 	// Make this module available when building for recovery.
 	Recovery_available *bool
 
@@ -159,6 +163,18 @@
 	return p.inVendorRamdisk()
 }
 
+func (p *PrebuiltEtc) inDebugRamdisk() bool {
+	return p.ModuleBase.InDebugRamdisk() || p.ModuleBase.InstallInDebugRamdisk()
+}
+
+func (p *PrebuiltEtc) onlyInDebugRamdisk() bool {
+	return p.ModuleBase.InstallInDebugRamdisk()
+}
+
+func (p *PrebuiltEtc) InstallInDebugRamdisk() bool {
+	return p.inDebugRamdisk()
+}
+
 func (p *PrebuiltEtc) inRecovery() bool {
 	return p.ModuleBase.InRecovery() || p.ModuleBase.InstallInRecovery()
 }
@@ -177,7 +193,7 @@
 
 func (p *PrebuiltEtc) CoreVariantNeeded(ctx android.BaseModuleContext) bool {
 	return !p.ModuleBase.InstallInRecovery() && !p.ModuleBase.InstallInRamdisk() &&
-		!p.ModuleBase.InstallInVendorRamdisk()
+		!p.ModuleBase.InstallInVendorRamdisk() && !p.ModuleBase.InstallInDebugRamdisk()
 }
 
 func (p *PrebuiltEtc) RamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
@@ -188,6 +204,10 @@
 	return proptools.Bool(p.properties.Vendor_ramdisk_available) || p.ModuleBase.InstallInVendorRamdisk()
 }
 
+func (p *PrebuiltEtc) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return proptools.Bool(p.properties.Debug_ramdisk_available) || p.ModuleBase.InstallInDebugRamdisk()
+}
+
 func (p *PrebuiltEtc) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	return proptools.Bool(p.properties.Recovery_available) || p.ModuleBase.InstallInRecovery()
 }
@@ -313,6 +333,9 @@
 	if p.inVendorRamdisk() && !p.onlyInVendorRamdisk() {
 		nameSuffix = ".vendor_ramdisk"
 	}
+	if p.inDebugRamdisk() && !p.onlyInDebugRamdisk() {
+		nameSuffix = ".debug_ramdisk"
+	}
 	if p.inRecovery() && !p.onlyInRecovery() {
 		nameSuffix = ".recovery"
 	}
@@ -431,3 +454,16 @@
 	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)
 	return module
 }
+
+// prebuilt_rfsa installs a firmware file that will be available through Qualcomm's RFSA
+// to the <partition>/lib/rfsa directory.
+func PrebuiltRFSAFactory() android.Module {
+	module := &PrebuiltEtc{}
+	// Ideally these would go in /vendor/dsp, but the /vendor/lib/rfsa paths are hardcoded in too
+	// many places outside of the application processor.  They could be moved to /vendor/dsp once
+	// that is cleaned up.
+	InitPrebuiltEtcModule(module, "lib/rfsa")
+	// This module is device-only
+	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)
+	return module
+}
diff --git a/etc/prebuilt_etc_test.go b/etc/prebuilt_etc_test.go
index fdb5648..354f6bb 100644
--- a/etc/prebuilt_etc_test.go
+++ b/etc/prebuilt_etc_test.go
@@ -312,3 +312,37 @@
 		})
 	}
 }
+
+func TestPrebuiltRFSADirPath(t *testing.T) {
+	targetPath := "out/soong/target/product/test_device"
+	tests := []struct {
+		description  string
+		config       string
+		expectedPath string
+	}{{
+		description: "prebuilt: system rfsa",
+		config: `
+			prebuilt_rfsa {
+				name: "foo.conf",
+				src: "foo.conf",
+			}`,
+		expectedPath: filepath.Join(targetPath, "system/lib/rfsa"),
+	}, {
+		description: "prebuilt: vendor rfsa",
+		config: `
+			prebuilt_rfsa {
+				name: "foo.conf",
+				src: "foo.conf",
+				soc_specific: true,
+				sub_dir: "sub_dir",
+			}`,
+		expectedPath: filepath.Join(targetPath, "vendor/lib/rfsa/sub_dir"),
+	}}
+	for _, tt := range tests {
+		t.Run(tt.description, func(t *testing.T) {
+			result := prepareForPrebuiltEtcTest.RunTestWithBp(t, tt.config)
+			p := result.Module("foo.conf", "android_arm64_armv8-a").(*PrebuiltEtc)
+			android.AssertPathRelativeToTopEquals(t, "install dir", tt.expectedPath, p.installDirPath)
+		})
+	}
+}
diff --git a/genrule/genrule.go b/genrule/genrule.go
index b426b20..77dae75 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -626,6 +626,7 @@
 func (x noopImageInterface) CoreVariantNeeded(android.BaseModuleContext) bool            { return false }
 func (x noopImageInterface) RamdiskVariantNeeded(android.BaseModuleContext) bool         { return false }
 func (x noopImageInterface) VendorRamdiskVariantNeeded(android.BaseModuleContext) bool   { return false }
+func (x noopImageInterface) DebugRamdiskVariantNeeded(android.BaseModuleContext) bool    { return false }
 func (x noopImageInterface) RecoveryVariantNeeded(android.BaseModuleContext) bool        { return false }
 func (x noopImageInterface) ExtraImageVariations(ctx android.BaseModuleContext) []string { return nil }
 func (x noopImageInterface) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
diff --git a/java/bootclasspath.go b/java/bootclasspath.go
index f03a673..02833ab 100644
--- a/java/bootclasspath.go
+++ b/java/bootclasspath.go
@@ -69,13 +69,15 @@
 // addDependencyOntoApexModulePair adds a dependency onto the specified APEX specific variant or the
 // specified module.
 //
-// If apex="platform" then this adds a dependency onto the platform variant of the module. This adds
-// dependencies onto the prebuilt and source modules with the specified name, depending on which
-// ones are available. Visiting must use isActiveModule to select the preferred module when both
-// source and prebuilt modules are available.
+// If apex="platform" or "system_ext" then this adds a dependency onto the platform variant of the
+// module. This adds dependencies onto the prebuilt and source modules with the specified name,
+// depending on which ones are available. Visiting must use isActiveModule to select the preferred
+// module when both source and prebuilt modules are available.
+//
+// Use gatherApexModulePairDepsWithTag to retrieve the dependencies.
 func addDependencyOntoApexModulePair(ctx android.BottomUpMutatorContext, apex string, name string, tag blueprint.DependencyTag) {
 	var variations []blueprint.Variation
-	if apex != "platform" {
+	if apex != "platform" && apex != "system_ext" {
 		// Pick the correct apex variant.
 		variations = []blueprint.Variation{
 			{Mutator: "apex", Variation: apex},
@@ -118,12 +120,28 @@
 	ctx.AddFarVariationDependencies(variations, nil, name)
 }
 
+// gatherApexModulePairDepsWithTag returns the list of dependencies with the supplied tag that was
+// added by addDependencyOntoApexModulePair.
+func gatherApexModulePairDepsWithTag(ctx android.BaseModuleContext, tag blueprint.DependencyTag) []android.Module {
+	var modules []android.Module
+	ctx.VisitDirectDepsIf(isActiveModule, func(module android.Module) {
+		t := ctx.OtherModuleDependencyTag(module)
+		if t == tag {
+			modules = append(modules, module)
+		}
+	})
+	return modules
+}
+
 // ApexVariantReference specifies a particular apex variant of a module.
 type ApexVariantReference struct {
 	// The name of the module apex variant, i.e. the apex containing the module variant.
 	//
 	// If this is not specified then it defaults to "platform" which will cause a dependency to be
 	// added to the module's platform variant.
+	//
+	// A value of system_ext should be used for any module that will be part of the system_ext
+	// partition.
 	Apex *string
 
 	// The name of the module.
diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index d7525ec..8fe362a 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -145,11 +145,6 @@
 		ctx.ModuleErrorf(`neither of the "image_name" and "contents" properties have been supplied, please supply exactly one`)
 	}
 
-	if len(contents) != 0 {
-		// Nothing to do.
-		return
-	}
-
 	imageName := proptools.String(m.properties.Image_name)
 	if imageName == "art" {
 		// TODO(b/177892522): Prebuilts (versioned or not) should not use the image_name property.
@@ -181,7 +176,7 @@
 				continue
 			}
 			if !m.AvailableFor(apex) {
-				ctx.ModuleErrorf("incompatible with ArtApexJars which expects this to be in apex %q but this is only in apexes %q",
+				ctx.ModuleErrorf("ArtApexJars configuration incompatible with this module, ArtApexJars expects this to be in apex %q but this is only in apexes %q",
 					apex, m.ApexAvailable())
 				continue
 			}
@@ -193,6 +188,11 @@
 			}
 		}
 
+		if len(contents) != 0 {
+			// Nothing to do.
+			return
+		}
+
 		// Store the jars in the Contents property so that they can be used to add dependencies.
 		m.properties.Contents = modules.CopyOfJars()
 	}
diff --git a/java/config/config.go b/java/config/config.go
index 30c6f91..273084c 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -69,6 +69,8 @@
 	pctx.StaticVariable("JavacHeapSize", "2048M")
 	pctx.StaticVariable("JavacHeapFlags", "-J-Xmx${JavacHeapSize}")
 	pctx.StaticVariable("DexFlags", "-JXX:OnError='cat hs_err_pid%p.log' -JXX:CICompilerCount=6 -JXX:+UseDynamicNumberOfGCThreads")
+	// TODO(b/181095653): remove duplicated flags.
+	pctx.StaticVariable("DexJavaFlags", "-XX:OnError='cat hs_err_pid%p.log' -XX:CICompilerCount=6 -XX:+UseDynamicNumberOfGCThreads -Xmx2G")
 
 	pctx.StaticVariable("CommonJdkFlags", strings.Join([]string{
 		`-Xmaxerrs 9999999`,
diff --git a/java/dex.go b/java/dex.go
index 7898e9d..6bf0143 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -84,6 +84,11 @@
 	return BoolDefault(d.dexProperties.Optimize.Enabled, d.dexProperties.Optimize.EnabledByDefault)
 }
 
+func init() {
+	pctx.HostBinToolVariable("runWithTimeoutCmd", "run_with_timeout")
+	pctx.SourcePathVariable("jstackCmd", "${config.JavaToolchain}/jstack")
+}
+
 var d8, d8RE = pctx.MultiCommandRemoteStaticRules("d8",
 	blueprint.RuleParams{
 		Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
@@ -117,7 +122,10 @@
 		Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
 			`rm -f "$outDict" && rm -rf "${outUsageDir}" && ` +
 			`mkdir -p $$(dirname ${outUsage}) && ` +
-			`$r8Template${config.R8Cmd} ${config.DexFlags} -injars $in --output $outDir ` +
+			// TODO(b/181095653): remove R8 timeout and go back to config.R8Cmd.
+			`${runWithTimeoutCmd} -timeout 30m -on_timeout '${jstackCmd} $$PID' -- ` +
+			`$r8Template${config.JavaCmd} ${config.DexJavaFlags} -cp ${config.R8Jar} ` +
+			`com.android.tools.r8.compatproguard.CompatProguard -injars $in --output $outDir ` +
 			`--no-data-resources ` +
 			`-printmapping ${outDict} ` +
 			`-printusage ${outUsage} ` +
@@ -128,9 +136,10 @@
 			`$zipTemplate${config.SoongZipCmd} $zipFlags -o $outDir/classes.dex.jar -C $outDir -f "$outDir/classes*.dex" && ` +
 			`${config.MergeZipsCmd} -D -stripFile "**/*.class" $out $outDir/classes.dex.jar $in`,
 		CommandDeps: []string{
-			"${config.R8Cmd}",
+			"${config.R8Jar}",
 			"${config.SoongZipCmd}",
 			"${config.MergeZipsCmd}",
+			"${runWithTimeoutCmd}",
 		},
 	}, map[string]*remoteexec.REParams{
 		"$r8Template": &remoteexec.REParams{
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index 8a6f3d1..ce5155f 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -431,9 +431,6 @@
 	defaultImageConfig := defaultBootImageConfig(ctx)
 	profile := bootImageProfileRule(ctx, defaultImageConfig)
 
-	// Generate the updatable bootclasspath packages rule.
-	updatableBcpPackagesRule(ctx, defaultImageConfig)
-
 	// Create the default boot image.
 	d.defaultBootImage = buildBootImage(ctx, defaultImageConfig, profile)
 
@@ -441,8 +438,6 @@
 	d.otherImages = append(d.otherImages, buildBootImage(ctx, artBootImageConfig(ctx), profile))
 
 	copyUpdatableBootJars(ctx)
-
-	dumpOatRules(ctx, d.defaultBootImage)
 }
 
 // shouldBuildBootImages determines whether boot images should be built.
@@ -457,129 +452,79 @@
 	return true
 }
 
-// Inspect this module to see if it contains a bootclasspath dex jar.
-// Note that the same jar may occur in multiple modules.
-// This logic is tested in the apex package to avoid import cycle apex <-> java.
+// A copy of isModuleInConfiguredList created to work with singleton context.
 //
-// This is similar to logic in isModuleInConfiguredList() so any changes needed here are likely to
-// be needed there too.
-//
-// TODO(b/177892522): Avoid having to perform this type of check or if necessary dedup it.
-func getBootJar(ctx android.SingletonContext, bootjars android.ConfiguredJarList,
-	module android.Module, fromWhere string) (int, android.Path, *android.ApexInfo) {
-
+// TODO(b/177892522): Remove this.
+func isModuleInConfiguredListForSingleton(ctx android.SingletonContext, module android.Module, configuredBootJars android.ConfiguredJarList) bool {
 	name := ctx.ModuleName(module)
 
-	// Strip a prebuilt_ prefix so that this can access the dex jar from a prebuilt module.
+	// Strip a prebuilt_ prefix so that this can match a prebuilt module that has not been renamed.
 	name = android.RemoveOptionalPrebuiltPrefix(name)
 
 	// Ignore any module that is not listed in the boot image configuration.
-	index := bootjars.IndexOfJar(name)
+	index := configuredBootJars.IndexOfJar(name)
 	if index == -1 {
-		return -1, nil, nil
+		return false
 	}
 
-	// It is an error if a module configured in the boot image does not support accessing the dex jar.
-	// This is safe because every module that has the same name has to have the same module type.
-	jar, hasJar := module.(interface{ DexJarBuildPath() android.Path })
-	if !hasJar {
-		ctx.Errorf("module %q %sdoes not support accessing dex jar", module, fromWhere)
-		return -1, nil, nil
-	}
-
-	// It is also an error if the module is not an ApexModule.
+	// It is an error if the module is not an ApexModule.
 	if _, ok := module.(android.ApexModule); !ok {
-		ctx.Errorf("module %q %sdoes not support being added to an apex", module, fromWhere)
-		return -1, nil, nil
+		ctx.Errorf("%s is configured in boot jars but does not support being added to an apex", ctx.ModuleName(module))
+		return false
 	}
 
 	apexInfo := ctx.ModuleProvider(module, android.ApexInfoProvider).(android.ApexInfo)
 
 	// Now match the apex part of the boot image configuration.
-	requiredApex := bootjars.Apex(index)
+	requiredApex := configuredBootJars.Apex(index)
 	if requiredApex == "platform" || requiredApex == "system_ext" {
 		if len(apexInfo.InApexes) != 0 {
 			// A platform variant is required but this is for an apex so ignore it.
-			return -1, nil, nil
+			return false
 		}
 	} else if !apexInfo.InApexByBaseName(requiredApex) {
 		// An apex variant for a specific apex is required but this is the wrong apex.
-		return -1, nil, nil
+		return false
 	}
 
-	return index, jar.DexJarBuildPath(), &apexInfo
+	return true
 }
 
-// Inspect this module to see if it contains a bootclasspath dex jar from a given boot image.
-func getBootImageJar(ctx android.SingletonContext, image *bootImageConfig, module android.Module) (int, android.Path) {
-	fromImage := fmt.Sprintf("configured in boot image %q ", image.name)
-	index, jarPath, apexInfo := getBootJar(ctx, image.modules, module, fromImage)
-	if index == -1 {
-		return -1, nil
-	}
-
-	name := ctx.ModuleName(module)
-
-	// Check that this module satisfies any boot image specific constraints.
-	fromUpdatableApex := apexInfo.Updatable
-
-	switch image.name {
-	case artBootImageName:
-		inArtApex := false
-		for _, n := range artApexNames {
-			if apexInfo.InApexByBaseName(n) {
-				inArtApex = true
-				break
-			}
-		}
-		if inArtApex {
-			// ok: found the jar in the ART apex
-		} else if name == "jacocoagent" && ctx.Config().IsEnvTrue("EMMA_INSTRUMENT_FRAMEWORK") {
-			// exception (skip and continue): Jacoco platform variant for a coverage build
-			return -1, nil
-		} else if fromUpdatableApex {
-			// error: this jar is part of an updatable apex other than ART
-			ctx.Errorf("module %q from updatable apexes %q is not allowed in the ART boot image", name, apexInfo.InApexes)
-		} else {
-			// error: this jar is part of the platform or a non-updatable apex
-			ctx.Errorf("module %q is not allowed in the ART boot image", name)
-		}
-
-	case frameworkBootImageName:
-		if !fromUpdatableApex {
-			// ok: this jar is part of the platform or a non-updatable apex
-		} else {
-			// error: this jar is part of an updatable apex
-			ctx.Errorf("module %q from updatable apexes %q is not allowed in the framework boot image", name, apexInfo.InApexes)
-		}
-	default:
-		panic("unknown boot image: " + image.name)
-	}
-
-	return index, jarPath
-}
-
-// Generate commands that will copy boot jars to predefined paths in the global config.
-func findAndCopyBootJars(ctx android.SingletonContext, bootjars android.ConfiguredJarList,
-	jarPathsPredefined android.WritablePaths,
-	getBootJar func(module android.Module) (int, android.Path)) {
+// findBootJarModules finds the boot jar module variants specified in the bootjars parameter.
+//
+// It returns a list of modules such that the module at index i corresponds to the configured jar
+// at index i.
+func findBootJarModules(ctx android.SingletonContext, bootjars android.ConfiguredJarList) []android.Module {
+	modules := make([]android.Module, bootjars.Len())
 
 	// This logic is tested in the apex package to avoid import cycle apex <-> java.
-	jarPaths := make(android.Paths, bootjars.Len())
-
 	ctx.VisitAllModules(func(module android.Module) {
-		if !isActiveModule(module) {
+		if !isActiveModule(module) || !isModuleInConfiguredListForSingleton(ctx, module, bootjars) {
 			return
 		}
-		if i, j := getBootJar(module); i != -1 {
-			if existing := jarPaths[i]; existing != nil {
-				ctx.Errorf("Multiple dex jars found for %s:%s - %q and %q",
-					bootjars.Apex(i), bootjars.Jar(i), existing, j)
-				return
-			}
-			jarPaths[i] = j
+
+		name := android.RemoveOptionalPrebuiltPrefix(ctx.ModuleName(module))
+		index := bootjars.IndexOfJar(name)
+		if existing := modules[index]; existing != nil {
+			ctx.Errorf("Multiple boot jar modules found for %s:%s - %q and %q",
+				bootjars.Apex(index), bootjars.Jar(index), existing, module)
+			return
 		}
+		modules[index] = module
 	})
+	return modules
+}
+
+// copyBootJarsToPredefinedLocations generates commands that will copy boot jars to
+// predefined paths in the global config.
+func copyBootJarsToPredefinedLocations(ctx android.SingletonContext, bootModules []android.Module, bootjars android.ConfiguredJarList, jarPathsPredefined android.WritablePaths) {
+	jarPaths := make(android.Paths, bootjars.Len())
+	for i, module := range bootModules {
+		if module != nil {
+			bootDexJar := module.(interface{ DexJarBuildPath() android.Path }).DexJarBuildPath()
+			jarPaths[i] = bootDexJar
+		}
+	}
 
 	// The paths to bootclasspath DEX files need to be known at module GenerateAndroidBuildAction
 	// time, before the boot images are built (these paths are used in dexpreopt rule generation for
@@ -619,10 +564,8 @@
 
 // buildBootImage takes a bootImageConfig, creates rules to build it, and returns the image.
 func buildBootImage(ctx android.SingletonContext, image *bootImageConfig, profile android.WritablePath) *bootImageConfig {
-	getBootJarFunc := func(module android.Module) (int, android.Path) {
-		return getBootImageJar(ctx, image, module)
-	}
-	findAndCopyBootJars(ctx, image.modules, image.dexPaths, getBootJarFunc)
+	bootModules := findBootJarModules(ctx, image.modules)
+	copyBootJarsToPredefinedLocations(ctx, bootModules, image.modules, image.dexPaths)
 
 	var zipFiles android.Paths
 	for _, variant := range image.variants {
@@ -649,11 +592,8 @@
 // Generate commands that will copy updatable boot jars to predefined paths in the global config.
 func copyUpdatableBootJars(ctx android.SingletonContext) {
 	config := GetUpdatableBootConfig(ctx)
-	getBootJarFunc := func(module android.Module) (int, android.Path) {
-		index, jar, _ := getBootJar(ctx, config.modules, module, "configured in updatable boot jars ")
-		return index, jar
-	}
-	findAndCopyBootJars(ctx, config.modules, config.dexPaths, getBootJarFunc)
+	bootModules := findBootJarModules(ctx, config.modules)
+	copyBootJarsToPredefinedLocations(ctx, bootModules, config.modules, config.dexPaths)
 }
 
 // Generate boot image build rules for a specific target.
@@ -887,32 +827,9 @@
 	return profile
 }
 
-func updatableBcpPackagesRule(ctx android.SingletonContext, image *bootImageConfig) android.WritablePath {
-	if ctx.Config().UnbundledBuild() {
-		return nil
-	}
-
-	global := dexpreopt.GetGlobalConfig(ctx)
-	var modules []android.Module
-	updatableModules := global.UpdatableBootJars.CopyOfJars()
-	ctx.VisitAllModules(func(module android.Module) {
-		if !isActiveModule(module) {
-			return
-		}
-		name := ctx.ModuleName(module)
-		if i := android.IndexList(name, updatableModules); i != -1 {
-			modules = append(modules, module)
-			// Do not match the same library repeatedly.
-			updatableModules = append(updatableModules[:i], updatableModules[i+1:]...)
-		}
-	})
-
-	return generateUpdatableBcpPackagesRule(ctx, image, modules)
-}
-
 // generateUpdatableBcpPackagesRule generates the rule to create the updatable-bcp-packages.txt file
 // and returns a path to the generated file.
-func generateUpdatableBcpPackagesRule(ctx android.SingletonContext, image *bootImageConfig, updatableModules []android.Module) android.WritablePath {
+func generateUpdatableBcpPackagesRule(ctx android.ModuleContext, image *bootImageConfig, updatableModules []android.Module) android.WritablePath {
 	// Collect `permitted_packages` for updatable boot jars.
 	var updatablePackages []string
 	for _, module := range updatableModules {
@@ -921,7 +838,7 @@
 			if len(pp) > 0 {
 				updatablePackages = append(updatablePackages, pp...)
 			} else {
-				ctx.Errorf("Missing permitted_packages for %s", ctx.ModuleName(module))
+				ctx.ModuleErrorf("Missing permitted_packages")
 			}
 		}
 	}
@@ -944,7 +861,7 @@
 	return updatableBcpPackages
 }
 
-func dumpOatRules(ctx android.SingletonContext, image *bootImageConfig) {
+func dumpOatRules(ctx android.ModuleContext, image *bootImageConfig) {
 	var allPhonies android.Paths
 	for _, image := range image.variants {
 		arch := image.target.Arch.ArchType
@@ -985,7 +902,6 @@
 		Inputs:      allPhonies,
 		Description: "dump-oat-boot",
 	})
-
 }
 
 func writeGlobalConfigForMake(ctx android.SingletonContext, path android.WritablePath) {
diff --git a/java/droidstubs.go b/java/droidstubs.go
index 3011250..566f7e3 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -300,6 +300,8 @@
 	if Bool(d.properties.Annotations_enabled) {
 		cmd.Flag("--include-annotations")
 
+		cmd.FlagWithArg("--exclude-annotation ", "androidx.annotation.RequiresApi")
+
 		validatingNullability :=
 			strings.Contains(String(d.Javadoc.properties.Args), "--validate-nullability-from-merged-stubs") ||
 				String(d.properties.Validate_nullability_from_list) != ""
diff --git a/java/hiddenapi.go b/java/hiddenapi.go
index bc3b474..a34044f 100644
--- a/java/hiddenapi.go
+++ b/java/hiddenapi.go
@@ -121,13 +121,6 @@
 
 var _ hiddenAPIIntf = (*hiddenAPI)(nil)
 
-// hiddenAPISupportingModule is the interface that is implemented by any module that supports
-// contributing to the hidden API processing.
-type hiddenAPISupportingModule interface {
-	android.Module
-	hiddenAPIIntf
-}
-
 // Initialize the hiddenapi structure
 func (h *hiddenAPI) initHiddenAPI(ctx android.BaseModuleContext, configurationName string) {
 	// If hiddenapi processing is disabled treat this as inactive.
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index 3cc88e6..f6af501 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -149,19 +149,9 @@
 	}
 }
 
-// Export paths to Make.  INTERNAL_PLATFORM_HIDDENAPI_FLAGS is used by Make rules in art/ and cts/.
-func (h *hiddenAPISingleton) MakeVars(ctx android.MakeVarsContext) {
-	if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
-		return
-	}
-
-	ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_FLAGS", h.flags.String())
-}
-
 // Checks to see whether the supplied module variant is in the list of boot jars.
 //
-// This is similar to logic in getBootImageJar() so any changes needed here are likely to be needed
-// there too.
+// Apart from the context this is identical to isModuleInConfiguredListForSingleton.
 //
 // TODO(b/179354495): Avoid having to perform this type of check or if necessary dedup it.
 func isModuleInConfiguredList(ctx android.BaseModuleContext, module android.Module, configuredBootJars android.ConfiguredJarList) bool {
@@ -178,7 +168,7 @@
 
 	// It is an error if the module is not an ApexModule.
 	if _, ok := module.(android.ApexModule); !ok {
-		ctx.ModuleErrorf("is configured in boot jars but does not support being added to an apex")
+		ctx.ModuleErrorf("%s is configured in boot jars but does not support being added to an apex", ctx.OtherModuleName(module))
 		return false
 	}
 
@@ -186,7 +176,7 @@
 
 	// Now match the apex part of the boot image configuration.
 	requiredApex := configuredBootJars.Apex(index)
-	if requiredApex == "platform" {
+	if requiredApex == "platform" || requiredApex == "system_ext" {
 		if len(apexInfo.InApexes) != 0 {
 			// A platform variant is required but this is for an apex so ignore it.
 			return false
diff --git a/java/platform_bootclasspath.go b/java/platform_bootclasspath.go
index 6503eca..3a59822 100644
--- a/java/platform_bootclasspath.go
+++ b/java/platform_bootclasspath.go
@@ -26,14 +26,19 @@
 }
 
 func registerPlatformBootclasspathBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterModuleType("platform_bootclasspath", platformBootclasspathFactory)
+	ctx.RegisterSingletonModuleType("platform_bootclasspath", platformBootclasspathFactory)
 }
 
-// The tag used for the dependency between the platform bootclasspath and any configured boot jars.
-var platformBootclasspathModuleDepTag = bootclasspathDependencyTag{name: "module"}
+// The tags used for the dependencies between the platform bootclasspath and any configured boot
+// jars.
+var (
+	platformBootclasspathArtBootJarDepTag          = bootclasspathDependencyTag{name: "art-boot-jar"}
+	platformBootclasspathNonUpdatableBootJarDepTag = bootclasspathDependencyTag{name: "non-updatable-boot-jar"}
+	platformBootclasspathUpdatableBootJarDepTag    = bootclasspathDependencyTag{name: "updatable-boot-jar"}
+)
 
 type platformBootclasspathModule struct {
-	android.ModuleBase
+	android.SingletonModuleBase
 	ClasspathFragmentBase
 
 	properties platformBootclasspathProperties
@@ -64,7 +69,7 @@
 	Hidden_api HiddenAPIFlagFileProperties
 }
 
-func platformBootclasspathFactory() android.Module {
+func platformBootclasspathFactory() android.SingletonModule {
 	m := &platformBootclasspathModule{}
 	m.AddProperties(&m.properties)
 	// TODO(satayev): split systemserver and apex jars into separate configs.
@@ -125,41 +130,64 @@
 func (b *platformBootclasspathModule) BootclasspathDepsMutator(ctx android.BottomUpMutatorContext) {
 	// Add dependencies on all the modules configured in the "art" boot image.
 	artImageConfig := genBootImageConfigs(ctx)[artBootImageName]
-	addDependenciesOntoBootImageModules(ctx, artImageConfig.modules)
+	addDependenciesOntoBootImageModules(ctx, artImageConfig.modules, platformBootclasspathArtBootJarDepTag)
 
-	// Add dependencies on all the modules configured in the "boot" boot image. That does not
-	// include modules configured in the "art" boot image.
+	// Add dependencies on all the non-updatable module configured in the "boot" boot image. That does
+	// not include modules configured in the "art" boot image.
 	bootImageConfig := b.getImageConfig(ctx)
-	addDependenciesOntoBootImageModules(ctx, bootImageConfig.modules)
+	addDependenciesOntoBootImageModules(ctx, bootImageConfig.modules, platformBootclasspathNonUpdatableBootJarDepTag)
 
 	// Add dependencies on all the updatable modules.
 	updatableModules := dexpreopt.GetGlobalConfig(ctx).UpdatableBootJars
-	addDependenciesOntoBootImageModules(ctx, updatableModules)
+	addDependenciesOntoBootImageModules(ctx, updatableModules, platformBootclasspathUpdatableBootJarDepTag)
 
 	// Add dependencies on all the fragments.
 	b.properties.BootclasspathFragmentsDepsProperties.addDependenciesOntoFragments(ctx)
 }
 
-func addDependenciesOntoBootImageModules(ctx android.BottomUpMutatorContext, modules android.ConfiguredJarList) {
+func addDependenciesOntoBootImageModules(ctx android.BottomUpMutatorContext, modules android.ConfiguredJarList, tag bootclasspathDependencyTag) {
 	for i := 0; i < modules.Len(); i++ {
 		apex := modules.Apex(i)
 		name := modules.Jar(i)
 
-		addDependencyOntoApexModulePair(ctx, apex, name, platformBootclasspathModuleDepTag)
+		addDependencyOntoApexModulePair(ctx, apex, name, tag)
 	}
 }
 
+// GenerateSingletonBuildActions does nothing and must never do anything.
+//
+// This module only implements android.SingletonModule so that it can implement
+// android.SingletonMakeVarsProvider.
+func (b *platformBootclasspathModule) GenerateSingletonBuildActions(android.SingletonContext) {
+	// Keep empty
+}
+
+func (d *platformBootclasspathModule) MakeVars(ctx android.MakeVarsContext) {
+	d.generateHiddenApiMakeVars(ctx)
+}
+
 func (b *platformBootclasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	b.classpathFragmentBase().generateAndroidBuildActions(ctx)
 
-	ctx.VisitDirectDepsIf(isActiveModule, func(module android.Module) {
-		tag := ctx.OtherModuleDependencyTag(module)
-		if tag == platformBootclasspathModuleDepTag {
-			b.configuredModules = append(b.configuredModules, module)
-		} else if tag == bootclasspathFragmentDepTag {
-			b.fragments = append(b.fragments, module)
-		}
-	})
+	// Gather all the dependencies from the art, updatable and non-updatable boot jars.
+	artModules := gatherApexModulePairDepsWithTag(ctx, platformBootclasspathArtBootJarDepTag)
+	nonUpdatableModules := gatherApexModulePairDepsWithTag(ctx, platformBootclasspathNonUpdatableBootJarDepTag)
+	updatableModules := gatherApexModulePairDepsWithTag(ctx, platformBootclasspathUpdatableBootJarDepTag)
+
+	// Concatenate them all, in order as they would appear on the bootclasspath.
+	var allModules []android.Module
+	allModules = append(allModules, artModules...)
+	allModules = append(allModules, nonUpdatableModules...)
+	allModules = append(allModules, updatableModules...)
+	b.configuredModules = allModules
+
+	// Gather all the fragments dependencies.
+	b.fragments = gatherApexModulePairDepsWithTag(ctx, bootclasspathFragmentDepTag)
+
+	// Check the configuration of the boot modules.
+	// ART modules are checked by the art-bootclasspath-fragment.
+	b.checkNonUpdatableModules(ctx, nonUpdatableModules)
+	b.checkUpdatableModules(ctx, updatableModules)
 
 	b.generateHiddenAPIBuildActions(ctx, b.configuredModules, b.fragments)
 
@@ -168,13 +196,60 @@
 		return
 	}
 
-	b.generateBootImageBuildActions(ctx)
+	b.generateBootImageBuildActions(ctx, updatableModules)
+}
+
+// checkNonUpdatableModules ensures that the non-updatable modules supplied are not part of an
+// updatable module.
+func (b *platformBootclasspathModule) checkNonUpdatableModules(ctx android.ModuleContext, modules []android.Module) {
+	for _, m := range modules {
+		apexInfo := ctx.OtherModuleProvider(m, android.ApexInfoProvider).(android.ApexInfo)
+		fromUpdatableApex := apexInfo.Updatable
+		if fromUpdatableApex {
+			// error: this jar is part of an updatable apex
+			ctx.ModuleErrorf("module %q from updatable apexes %q is not allowed in the framework boot image", ctx.OtherModuleName(m), apexInfo.InApexes)
+		} else {
+			// ok: this jar is part of the platform or a non-updatable apex
+		}
+	}
+}
+
+// checkUpdatableModules ensures that the updatable modules supplied are not from the platform.
+func (b *platformBootclasspathModule) checkUpdatableModules(ctx android.ModuleContext, modules []android.Module) {
+	for _, m := range modules {
+		apexInfo := ctx.OtherModuleProvider(m, android.ApexInfoProvider).(android.ApexInfo)
+		fromUpdatableApex := apexInfo.Updatable
+		if fromUpdatableApex {
+			// ok: this jar is part of an updatable apex
+		} else {
+			name := ctx.OtherModuleName(m)
+			if apexInfo.IsForPlatform() {
+				// error: this jar is part of the platform
+				ctx.ModuleErrorf("module %q from platform is not allowed in the updatable boot jars list", name)
+			} else {
+				// TODO(b/177892522): Treat this as an error.
+				// Cannot do that at the moment because framework-wifi and framework-tethering are in the
+				// PRODUCT_UPDATABLE_BOOT_JARS but not marked as updatable in AOSP.
+			}
+		}
+	}
 }
 
 func (b *platformBootclasspathModule) getImageConfig(ctx android.EarlyModuleContext) *bootImageConfig {
 	return defaultBootImageConfig(ctx)
 }
 
+// hiddenAPISupportingModule encapsulates the information provided by any module that contributes to
+// the hidden API processing.
+type hiddenAPISupportingModule struct {
+	module android.Module
+
+	bootDexJar  android.Path
+	flagsCSV    android.Path
+	indexCSV    android.Path
+	metadataCSV android.Path
+}
+
 // generateHiddenAPIBuildActions generates all the hidden API related build rules.
 func (b *platformBootclasspathModule) generateHiddenAPIBuildActions(ctx android.ModuleContext, modules []android.Module, fragments []android.Module) {
 
@@ -197,27 +272,57 @@
 		return
 	}
 
+	// nilPathHandler will check the supplied path and if it is nil then it will either immediately
+	// report an error, or it will defer the error reporting until it is actually used, depending
+	// whether missing dependencies are allowed.
+	var nilPathHandler func(path android.Path, name string, module android.Module) android.Path
+	if ctx.Config().AllowMissingDependencies() {
+		nilPathHandler = func(path android.Path, name string, module android.Module) android.Path {
+			if path == nil {
+				outputPath := android.PathForModuleOut(ctx, "missing", module.Name(), name)
+				path = outputPath
+
+				// Create an error rule that pretends to create the output file but will actually fail if it
+				// is run.
+				ctx.Build(pctx, android.BuildParams{
+					Rule:   android.ErrorRule,
+					Output: outputPath,
+					Args: map[string]string{
+						"error": fmt.Sprintf("missing hidden API file: %s for %s", name, module),
+					},
+				})
+			}
+			return path
+		}
+	} else {
+		nilPathHandler = func(path android.Path, name string, module android.Module) android.Path {
+			if path == nil {
+				ctx.ModuleErrorf("module %s does not provide a %s file", module, name)
+			}
+			return path
+		}
+	}
+
 	hiddenAPISupportingModules := []hiddenAPISupportingModule{}
 	for _, module := range modules {
-		if h, ok := module.(hiddenAPISupportingModule); ok {
-			if h.bootDexJar() == nil {
-				ctx.ModuleErrorf("module %s does not provide a bootDexJar file", module)
-			}
-			if h.flagsCSV() == nil {
-				ctx.ModuleErrorf("module %s does not provide a flagsCSV file", module)
-			}
-			if h.indexCSV() == nil {
-				ctx.ModuleErrorf("module %s does not provide an indexCSV file", module)
-			}
-			if h.metadataCSV() == nil {
-				ctx.ModuleErrorf("module %s does not provide a metadataCSV file", module)
+		if h, ok := module.(hiddenAPIIntf); ok {
+			hiddenAPISupportingModule := hiddenAPISupportingModule{
+				module:      module,
+				bootDexJar:  nilPathHandler(h.bootDexJar(), "bootDexJar", module),
+				flagsCSV:    nilPathHandler(h.flagsCSV(), "flagsCSV", module),
+				indexCSV:    nilPathHandler(h.indexCSV(), "indexCSV", module),
+				metadataCSV: nilPathHandler(h.metadataCSV(), "metadataCSV", module),
 			}
 
+			// If any errors were reported when trying to populate the hiddenAPISupportingModule struct
+			// then don't add it to the list.
 			if ctx.Failed() {
 				continue
 			}
 
-			hiddenAPISupportingModules = append(hiddenAPISupportingModules, h)
+			hiddenAPISupportingModules = append(hiddenAPISupportingModules, hiddenAPISupportingModule)
+		} else if _, ok := module.(*DexImport); ok {
+			// Ignore this for the purposes of hidden API processing
 		} else {
 			ctx.ModuleErrorf("module %s of type %s does not support hidden API processing", module, ctx.OtherModuleType(module))
 		}
@@ -225,7 +330,7 @@
 
 	moduleSpecificFlagsPaths := android.Paths{}
 	for _, module := range hiddenAPISupportingModules {
-		moduleSpecificFlagsPaths = append(moduleSpecificFlagsPaths, module.flagsCSV())
+		moduleSpecificFlagsPaths = append(moduleSpecificFlagsPaths, module.flagsCSV)
 	}
 
 	flagFileInfo := b.properties.Hidden_api.hiddenAPIFlagFileInfo(ctx)
@@ -251,7 +356,7 @@
 func (b *platformBootclasspathModule) generateHiddenAPIStubFlagsRules(ctx android.ModuleContext, modules []hiddenAPISupportingModule) {
 	bootDexJars := android.Paths{}
 	for _, module := range modules {
-		bootDexJars = append(bootDexJars, module.bootDexJar())
+		bootDexJars = append(bootDexJars, module.bootDexJar)
 	}
 
 	sdkKindToStubPaths := hiddenAPIGatherStubLibDexJarPaths(ctx)
@@ -264,7 +369,7 @@
 func (b *platformBootclasspathModule) generateHiddenAPIIndexRules(ctx android.ModuleContext, modules []hiddenAPISupportingModule) {
 	indexes := android.Paths{}
 	for _, module := range modules {
-		indexes = append(indexes, module.indexCSV())
+		indexes = append(indexes, module.indexCSV)
 	}
 
 	rule := android.NewRuleBuilder(pctx, ctx)
@@ -280,7 +385,7 @@
 func (b *platformBootclasspathModule) generatedHiddenAPIMetadataRules(ctx android.ModuleContext, modules []hiddenAPISupportingModule) {
 	metadataCSVFiles := android.Paths{}
 	for _, module := range modules {
-		metadataCSVFiles = append(metadataCSVFiles, module.metadataCSV())
+		metadataCSVFiles = append(metadataCSVFiles, module.metadataCSV)
 	}
 
 	rule := android.NewRuleBuilder(pctx, ctx)
@@ -296,8 +401,18 @@
 	rule.Build("platform-bootclasspath-monolithic-hiddenapi-metadata", "monolithic hidden API metadata")
 }
 
+// generateHiddenApiMakeVars generates make variables needed by hidden API related make rules, e.g.
+// veridex and run-appcompat.
+func (b *platformBootclasspathModule) generateHiddenApiMakeVars(ctx android.MakeVarsContext) {
+	if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
+		return
+	}
+	// INTERNAL_PLATFORM_HIDDENAPI_FLAGS is used by Make rules in art/ and cts/.
+	ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_FLAGS", b.hiddenAPIFlagsCSV.String())
+}
+
 // generateBootImageBuildActions generates ninja rules related to the boot image creation.
-func (b *platformBootclasspathModule) generateBootImageBuildActions(ctx android.ModuleContext) {
+func (b *platformBootclasspathModule) generateBootImageBuildActions(ctx android.ModuleContext, updatableModules []android.Module) {
 	// Force the GlobalSoongConfig to be created and cached for use by the dex_bootjars
 	// GenerateSingletonBuildActions method as it cannot create it for itself.
 	dexpreopt.GetGlobalSoongConfig(ctx)
@@ -314,4 +429,9 @@
 
 	// Generate the framework profile rule
 	bootFrameworkProfileRule(ctx, imageConfig)
+
+	// Generate the updatable bootclasspath packages rule.
+	generateUpdatableBcpPackagesRule(ctx, imageConfig, updatableModules)
+
+	dumpOatRules(ctx, imageConfig)
 }
diff --git a/java/platform_bootclasspath_test.go b/java/platform_bootclasspath_test.go
index 955e387..98d4614 100644
--- a/java/platform_bootclasspath_test.go
+++ b/java/platform_bootclasspath_test.go
@@ -33,7 +33,7 @@
 func TestPlatformBootclasspath(t *testing.T) {
 	preparer := android.GroupFixturePreparers(
 		prepareForTestWithPlatformBootclasspath,
-		FixtureConfigureBootJars("platform:foo", "platform:bar"),
+		FixtureConfigureBootJars("platform:foo", "system_ext:bar"),
 		android.FixtureWithRootAndroidBp(`
 			platform_bootclasspath {
 				name: "platform-bootclasspath",
@@ -45,6 +45,7 @@
 				system_modules: "none",
 				sdk_version: "none",
 				compile_dex: true,
+				system_ext_specific: true,
 			}
 		`),
 	)
@@ -132,6 +133,23 @@
 			"platform:bar",
 		})
 	})
+
+	t.Run("dex import", func(t *testing.T) {
+		result := android.GroupFixturePreparers(
+			preparer,
+			android.FixtureAddTextFile("deximport/Android.bp", `
+				dex_import {
+					name: "foo",
+					jars: ["a.jar"],
+				}
+			`),
+		).RunTest(t)
+
+		CheckPlatformBootclasspathModules(t, result, "platform-bootclasspath", []string{
+			"platform:prebuilt_foo",
+			"platform:bar",
+		})
+	})
 }
 
 func TestPlatformBootclasspath_Fragments(t *testing.T) {
diff --git a/rust/androidmk.go b/rust/androidmk.go
index 5f89d73..ea45ebd 100644
--- a/rust/androidmk.go
+++ b/rust/androidmk.go
@@ -91,7 +91,6 @@
 	if binary.distFile.Valid() {
 		ret.DistFiles = android.MakeDefaultDistFiles(binary.distFile.Path())
 	}
-
 	ret.Class = "EXECUTABLES"
 }
 
@@ -201,3 +200,36 @@
 			entries.SetString("LOCAL_MODULE_STEM", stem)
 		})
 }
+
+func (fuzz *fuzzDecorator) AndroidMkEntries(ctx AndroidMkContext, entries *android.AndroidMkEntries) {
+	ctx.SubAndroidMk(entries, fuzz.binaryDecorator)
+
+	var fuzzFiles []string
+	for _, d := range fuzz.corpus {
+		fuzzFiles = append(fuzzFiles,
+			filepath.Dir(fuzz.corpusIntermediateDir.String())+":corpus/"+d.Base())
+	}
+
+	for _, d := range fuzz.data {
+		fuzzFiles = append(fuzzFiles,
+			filepath.Dir(fuzz.dataIntermediateDir.String())+":data/"+d.Rel())
+	}
+
+	if fuzz.dictionary != nil {
+		fuzzFiles = append(fuzzFiles,
+			filepath.Dir(fuzz.dictionary.String())+":"+fuzz.dictionary.Base())
+	}
+
+	if fuzz.config != nil {
+		fuzzFiles = append(fuzzFiles,
+			filepath.Dir(fuzz.config.String())+":config.json")
+	}
+
+	entries.ExtraEntries = append(entries.ExtraEntries, func(ctx android.AndroidMkExtraEntriesContext,
+		entries *android.AndroidMkEntries) {
+		entries.SetBool("LOCAL_IS_FUZZ_TARGET", true)
+		if len(fuzzFiles) > 0 {
+			entries.AddStrings("LOCAL_TEST_DATA", fuzzFiles...)
+		}
+	})
+}
diff --git a/rust/fuzz.go b/rust/fuzz.go
index d699971..7e1c55a 100644
--- a/rust/fuzz.go
+++ b/rust/fuzz.go
@@ -15,6 +15,10 @@
 package rust
 
 import (
+	"path/filepath"
+	"sort"
+	"strings"
+
 	"android/soong/android"
 	"android/soong/cc"
 	"android/soong/rust/config"
@@ -22,6 +26,7 @@
 
 func init() {
 	android.RegisterModuleType("rust_fuzz", RustFuzzFactory)
+	android.RegisterSingletonType("rust_fuzz_packaging", rustFuzzPackagingFactory)
 }
 
 type fuzzDecorator struct {
@@ -93,3 +98,204 @@
 func (fuzzer *fuzzDecorator) autoDep(ctx android.BottomUpMutatorContext) autoDep {
 	return rlibAutoDep
 }
+
+// Responsible for generating GNU Make rules that package fuzz targets into
+// their architecture & target/host specific zip file.
+type rustFuzzPackager struct {
+	packages    android.Paths
+	fuzzTargets map[string]bool
+}
+
+func rustFuzzPackagingFactory() android.Singleton {
+	return &rustFuzzPackager{}
+}
+
+type fileToZip struct {
+	SourceFilePath        android.Path
+	DestinationPathPrefix string
+}
+
+type archOs struct {
+	hostOrTarget string
+	arch         string
+	dir          string
+}
+
+func (s *rustFuzzPackager) GenerateBuildActions(ctx android.SingletonContext) {
+
+	// Map between each architecture + host/device combination.
+	archDirs := make(map[archOs][]fileToZip)
+
+	// List of individual fuzz targets.
+	s.fuzzTargets = make(map[string]bool)
+
+	ctx.VisitAllModules(func(module android.Module) {
+		// Discard non-fuzz targets.
+		rustModule, ok := module.(*Module)
+		if !ok {
+			return
+		}
+
+		fuzzModule, ok := rustModule.compiler.(*fuzzDecorator)
+		if !ok {
+			return
+		}
+
+		// Discard ramdisk + vendor_ramdisk + recovery modules, they're duplicates of
+		// fuzz targets we're going to package anyway.
+		if !rustModule.Enabled() || rustModule.Properties.PreventInstall ||
+			rustModule.InRamdisk() || rustModule.InVendorRamdisk() || rustModule.InRecovery() {
+			return
+		}
+
+		// Discard modules that are in an unavailable namespace.
+		if !rustModule.ExportedToMake() {
+			return
+		}
+
+		hostOrTargetString := "target"
+		if rustModule.Host() {
+			hostOrTargetString = "host"
+		}
+
+		archString := rustModule.Arch().ArchType.String()
+		archDir := android.PathForIntermediates(ctx, "fuzz", hostOrTargetString, archString)
+		archOs := archOs{hostOrTarget: hostOrTargetString, arch: archString, dir: archDir.String()}
+
+		var files []fileToZip
+		builder := android.NewRuleBuilder(pctx, ctx)
+
+		// Package the corpora into a zipfile.
+		if fuzzModule.corpus != nil {
+			corpusZip := archDir.Join(ctx, module.Name()+"_seed_corpus.zip")
+			command := builder.Command().BuiltTool("soong_zip").
+				Flag("-j").
+				FlagWithOutput("-o ", corpusZip)
+			rspFile := corpusZip.ReplaceExtension(ctx, "rsp")
+			command.FlagWithRspFileInputList("-r ", rspFile, fuzzModule.corpus)
+			files = append(files, fileToZip{corpusZip, ""})
+		}
+
+		// Package the data into a zipfile.
+		if fuzzModule.data != nil {
+			dataZip := archDir.Join(ctx, module.Name()+"_data.zip")
+			command := builder.Command().BuiltTool("soong_zip").
+				FlagWithOutput("-o ", dataZip)
+			for _, f := range fuzzModule.data {
+				intermediateDir := strings.TrimSuffix(f.String(), f.Rel())
+				command.FlagWithArg("-C ", intermediateDir)
+				command.FlagWithInput("-f ", f)
+			}
+			files = append(files, fileToZip{dataZip, ""})
+		}
+
+		// The executable.
+		files = append(files, fileToZip{rustModule.unstrippedOutputFile.Path(), ""})
+
+		// The dictionary.
+		if fuzzModule.dictionary != nil {
+			files = append(files, fileToZip{fuzzModule.dictionary, ""})
+		}
+
+		// Additional fuzz config.
+		if fuzzModule.config != nil {
+			files = append(files, fileToZip{fuzzModule.config, ""})
+		}
+
+		fuzzZip := archDir.Join(ctx, module.Name()+".zip")
+
+		command := builder.Command().BuiltTool("soong_zip").
+			Flag("-j").
+			FlagWithOutput("-o ", fuzzZip)
+
+		for _, file := range files {
+			if file.DestinationPathPrefix != "" {
+				command.FlagWithArg("-P ", file.DestinationPathPrefix)
+			} else {
+				command.Flag("-P ''")
+			}
+			command.FlagWithInput("-f ", file.SourceFilePath)
+		}
+
+		builder.Build("create-"+fuzzZip.String(),
+			"Package "+module.Name()+" for "+archString+"-"+hostOrTargetString)
+
+		// Don't add modules to 'make haiku-rust' that are set to not be
+		// exported to the fuzzing infrastructure.
+		if config := fuzzModule.Properties.Fuzz_config; config != nil {
+			if rustModule.Host() && !BoolDefault(config.Fuzz_on_haiku_host, true) {
+				return
+			} else if !BoolDefault(config.Fuzz_on_haiku_device, true) {
+				return
+			}
+		}
+
+		s.fuzzTargets[module.Name()] = true
+		archDirs[archOs] = append(archDirs[archOs], fileToZip{fuzzZip, ""})
+	})
+
+	var archOsList []archOs
+	for archOs := range archDirs {
+		archOsList = append(archOsList, archOs)
+	}
+	sort.Slice(archOsList, func(i, j int) bool { return archOsList[i].dir < archOsList[j].dir })
+
+	for _, archOs := range archOsList {
+		filesToZip := archDirs[archOs]
+		arch := archOs.arch
+		hostOrTarget := archOs.hostOrTarget
+		builder := android.NewRuleBuilder(pctx, ctx)
+		outputFile := android.PathForOutput(ctx, "fuzz-rust-"+hostOrTarget+"-"+arch+".zip")
+		s.packages = append(s.packages, outputFile)
+
+		command := builder.Command().BuiltTool("soong_zip").
+			Flag("-j").
+			FlagWithOutput("-o ", outputFile).
+			Flag("-L 0") // No need to try and re-compress the zipfiles.
+
+		for _, fileToZip := range filesToZip {
+			if fileToZip.DestinationPathPrefix != "" {
+				command.FlagWithArg("-P ", fileToZip.DestinationPathPrefix)
+			} else {
+				command.Flag("-P ''")
+			}
+			command.FlagWithInput("-f ", fileToZip.SourceFilePath)
+		}
+		builder.Build("create-fuzz-package-"+arch+"-"+hostOrTarget,
+			"Create fuzz target packages for "+arch+"-"+hostOrTarget)
+	}
+
+}
+
+func (s *rustFuzzPackager) MakeVars(ctx android.MakeVarsContext) {
+	packages := s.packages.Strings()
+	sort.Strings(packages)
+
+	ctx.Strict("SOONG_RUST_FUZZ_PACKAGING_ARCH_MODULES", strings.Join(packages, " "))
+
+	// Preallocate the slice of fuzz targets to minimise memory allocations.
+	fuzzTargets := make([]string, 0, len(s.fuzzTargets))
+	for target, _ := range s.fuzzTargets {
+		fuzzTargets = append(fuzzTargets, target)
+	}
+	sort.Strings(fuzzTargets)
+	ctx.Strict("ALL_RUST_FUZZ_TARGETS", strings.Join(fuzzTargets, " "))
+}
+
+func (fuzz *fuzzDecorator) install(ctx ModuleContext) {
+	fuzz.binaryDecorator.baseCompiler.dir = filepath.Join(
+		"fuzz", ctx.Target().Arch.ArchType.String(), ctx.ModuleName())
+	fuzz.binaryDecorator.baseCompiler.dir64 = filepath.Join(
+		"fuzz", ctx.Target().Arch.ArchType.String(), ctx.ModuleName())
+	fuzz.binaryDecorator.baseCompiler.install(ctx)
+
+	if fuzz.Properties.Corpus != nil {
+		fuzz.corpus = android.PathsForModuleSrc(ctx, fuzz.Properties.Corpus)
+	}
+	if fuzz.Properties.Data != nil {
+		fuzz.data = android.PathsForModuleSrc(ctx, fuzz.Properties.Data)
+	}
+	if fuzz.Properties.Dictionary != nil {
+		fuzz.dictionary = android.PathForModuleSrc(ctx, *fuzz.Properties.Dictionary)
+	}
+}
diff --git a/rust/image.go b/rust/image.go
index 7eb49d9..900842e 100644
--- a/rust/image.go
+++ b/rust/image.go
@@ -97,6 +97,10 @@
 	return mod.InRamdisk()
 }
 
+func (mod *Module) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (mod *Module) RecoveryVariantNeeded(android.BaseModuleContext) bool {
 	return mod.InRecovery()
 }
diff --git a/rust/rust.go b/rust/rust.go
index 3dcd459..bb97142 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -270,6 +270,10 @@
 	return false
 }
 
+func (m *Module) NeedsVendorPublicLibraryVariants() bool {
+	return false
+}
+
 func (mod *Module) SdkVersion() string {
 	return ""
 }
diff --git a/scripts/strip.sh b/scripts/strip.sh
index e3e5273..d09c187 100755
--- a/scripts/strip.sh
+++ b/scripts/strip.sh
@@ -71,7 +71,7 @@
     "${CLANG_BIN}/llvm-objcopy" -w "${infile}" "${outfile}.tmp" ${KEEP_SYMBOLS}
 }
 
-do_strip_keep_mini_debug_info() {
+do_strip_keep_mini_debug_info_darwin() {
     rm -f "${outfile}.dynsyms" "${outfile}.funcsyms" "${outfile}.keep_symbols" "${outfile}.debug" "${outfile}.mini_debuginfo" "${outfile}.mini_debuginfo.xz"
     local fail=
     "${CLANG_BIN}/llvm-strip" --strip-all --keep-section=.ARM.attributes --remove-section=.comment "${infile}" -o "${outfile}.tmp" || fail=true
@@ -92,6 +92,32 @@
     fi
 }
 
+do_strip_keep_mini_debug_info_linux() {
+    rm -f "${outfile}.mini_debuginfo.xz"
+    local fail=
+    "${CLANG_BIN}/llvm-strip" --strip-all --keep-section=.ARM.attributes --remove-section=.comment "${infile}" -o "${outfile}.tmp" || fail=true
+
+    if [ -z $fail ]; then
+        "${CREATE_MINIDEBUGINFO}" "${infile}" "${outfile}.mini_debuginfo.xz"
+        "${CLANG_BIN}/llvm-objcopy" --add-section .gnu_debugdata="${outfile}.mini_debuginfo.xz" "${outfile}.tmp"
+        rm -f "${outfile}.mini_debuginfo.xz"
+    else
+        cp -f "${infile}" "${outfile}.tmp"
+    fi
+}
+
+do_strip_keep_mini_debug_info() {
+  case $(uname) in
+      Linux)
+          do_strip_keep_mini_debug_info_linux
+          ;;
+      Darwin)
+          do_strip_keep_mini_debug_info_darwin
+          ;;
+      *) echo "unknown OS:" $(uname) >&2 && exit 1;;
+  esac
+}
+
 do_add_gnu_debuglink() {
     "${CLANG_BIN}/llvm-objcopy" --add-gnu-debuglink="${infile}" "${outfile}.tmp"
 }
diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index 2827567..0f2fd54 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -68,6 +68,7 @@
 			bootclasspath_fragment {
 				name: "mybootclasspathfragment",
 				image_name: "art",
+				contents: ["mybootlib"],
 				apex_available: ["com.android.art"],
 			}
 
diff --git a/sh/sh_binary.go b/sh/sh_binary.go
index 6623381..42d5680 100644
--- a/sh/sh_binary.go
+++ b/sh/sh_binary.go
@@ -210,6 +210,10 @@
 	return proptools.Bool(s.properties.Vendor_ramdisk_available) || s.ModuleBase.InstallInVendorRamdisk()
 }
 
+func (s *ShBinary) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (s *ShBinary) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	return proptools.Bool(s.properties.Recovery_available) || s.ModuleBase.InstallInRecovery()
 }
diff --git a/ui/build/cleanbuild.go b/ui/build/cleanbuild.go
index 6ba497c..19b5690 100644
--- a/ui/build/cleanbuild.go
+++ b/ui/build/cleanbuild.go
@@ -144,7 +144,8 @@
 		productOut("odm"),
 		productOut("odm_dlkm"),
 		productOut("sysloader"),
-		productOut("testcases"))
+		productOut("testcases"),
+		productOut("symbols"))
 }
 
 // Since products and build variants (unfortunately) shared the same