diff --git a/api/Android.bp b/api/Android.bp
index 7ef00b0..c7c5686 100644
--- a/api/Android.bp
+++ b/api/Android.bp
@@ -125,27 +125,54 @@
     }),
 }
 
+// Create a single file containing the latest released version of the whole
+// Android public API.
+java_genrule {
+    name: "android.api.merged.public.latest",
+    srcs: [
+        ":android.api.combined.public.latest",
+    ],
+    out: ["public-latest.txt"],
+    tools: ["metalava"],
+    cmd: metalava_cmd + " merge-signatures --format=2.0 $(in) --out $(out)",
+}
+
+// Make sure that the Android public API is compatible with the
+// previously released public API.
 java_genrule {
     name: "frameworks-base-api-current-compat",
     srcs: [
-        ":android.api.public.latest",
+        ":android.api.merged.public.latest",
         ":android-incompatibilities.api.public.latest",
         ":frameworks-base-api-current.txt",
     ],
     out: ["updated-baseline.txt"],
     tools: ["metalava"],
     cmd: metalava_cmd +
-        "--check-compatibility:api:released $(location :android.api.public.latest) " +
+        "--check-compatibility:api:released $(location :android.api.merged.public.latest) " +
         "--baseline:compatibility:released $(location :android-incompatibilities.api.public.latest) " +
         "--update-baseline:compatibility:released $(genDir)/updated-baseline.txt " +
         "$(location :frameworks-base-api-current.txt)",
 }
 
+// Create a single file containing the latest released version of the whole
+// Android system API.
+java_genrule {
+    name: "android.api.merged.system.latest",
+    srcs: [
+        ":android.api.combined.system.latest",
+    ],
+    out: ["system-latest.txt"],
+    tools: ["metalava"],
+    cmd: metalava_cmd + " merge-signatures --format=2.0 $(in) --out $(out)",
+}
+
+// Make sure that the Android system API is compatible with the
+// previously released system API.
 java_genrule {
     name: "frameworks-base-api-system-current-compat",
     srcs: [
-        ":android.api.public.latest",
-        ":android.api.system.latest",
+        ":android.api.merged.system.latest",
         ":android-incompatibilities.api.system.latest",
         ":frameworks-base-api-current.txt",
         ":frameworks-base-api-system-current.txt",
@@ -153,20 +180,31 @@
     out: ["updated-baseline.txt"],
     tools: ["metalava"],
     cmd: metalava_cmd +
-        "--check-compatibility:api:released $(location :android.api.public.latest) " +
-        "--check-compatibility:api:released $(location :android.api.system.latest) " +
+        "--check-compatibility:api:released $(location :android.api.merged.system.latest) " +
         "--baseline:compatibility:released $(location :android-incompatibilities.api.system.latest) " +
         "--update-baseline:compatibility:released $(genDir)/updated-baseline.txt " +
         "$(location :frameworks-base-api-current.txt) " +
         "$(location :frameworks-base-api-system-current.txt)",
 }
 
+// Create a single file containing the latest released version of the whole
+// Android module-lib API.
+java_genrule {
+    name: "android.api.merged.module-lib.latest",
+    srcs: [
+        ":android.api.combined.module-lib.latest",
+    ],
+    out: ["module-lib-latest.txt"],
+    tools: ["metalava"],
+    cmd: metalava_cmd + " merge-signatures --format=2.0 $(in) --out $(out)",
+}
+
+// Make sure that the Android module-lib API is compatible with the
+// previously released module-lib API.
 java_genrule {
     name: "frameworks-base-api-module-lib-current-compat",
     srcs: [
-        ":android.api.public.latest",
-        ":android.api.system.latest",
-        ":android.api.module-lib.latest",
+        ":android.api.merged.module-lib.latest",
         ":android-incompatibilities.api.module-lib.latest",
         ":frameworks-base-api-current.txt",
         ":frameworks-base-api-system-current.txt",
@@ -175,9 +213,7 @@
     out: ["updated-baseline.txt"],
     tools: ["metalava"],
     cmd: metalava_cmd +
-        "--check-compatibility:api:released $(location :android.api.public.latest) " +
-        "--check-compatibility:api:released $(location :android.api.system.latest) " +
-        "--check-compatibility:api:released $(location :android.api.module-lib.latest) " +
+        "--check-compatibility:api:released $(location :android.api.merged.module-lib.latest) " +
         "--baseline:compatibility:released $(location :android-incompatibilities.api.module-lib.latest) " +
         "--update-baseline:compatibility:released $(genDir)/updated-baseline.txt " +
         "$(location :frameworks-base-api-current.txt) " +
@@ -192,7 +228,7 @@
     cmd: "$(location merge_zips) $(out) $(in)",
     srcs: [
         ":api-stubs-docs-non-updatable{.exportable}",
-        ":all-modules-public-stubs-source",
+        ":all-modules-public-stubs-source-exportable",
     ],
     visibility: ["//visibility:private"], // Used by make module in //development, mind
 }
diff --git a/api/ApiDocs.bp b/api/ApiDocs.bp
index e8fcf4b..1ebe0cd 100644
--- a/api/ApiDocs.bp
+++ b/api/ApiDocs.bp
@@ -129,7 +129,7 @@
 droidstubs {
     name: "framework-doc-stubs",
     defaults: ["android-non-updatable-doc-stubs-defaults"],
-    srcs: [":all-modules-public-stubs-source"],
+    srcs: [":all-modules-public-stubs-source-exportable"],
     api_levels_module: "api_versions_public",
     aidl: {
         include_dirs: [
diff --git a/api/api.go b/api/api.go
index 29083df..aa89c24 100644
--- a/api/api.go
+++ b/api/api.go
@@ -428,8 +428,9 @@
 
 func createPublicStubsSourceFilegroup(ctx android.LoadHookContext, modules proptools.Configurable[[]string]) {
 	props := fgProps{}
-	props.Name = proptools.StringPtr("all-modules-public-stubs-source")
-	props.Device_common_srcs = createSrcs(modules, "{.public.stubs.source}")
+	props.Name = proptools.StringPtr("all-modules-public-stubs-source-exportable")
+	transformConfigurableArray(modules, "", ".stubs.source")
+	props.Device_common_srcs = createSrcs(modules, "{.exportable}")
 	props.Visibility = []string{"//frameworks/base"}
 	ctx.CreateModule(android.FileGroupFactory, &props)
 }
diff --git a/core/java/Android.bp b/core/java/Android.bp
index 7e8a309..3f6e65b 100644
--- a/core/java/Android.bp
+++ b/core/java/Android.bp
@@ -649,16 +649,31 @@
 // Generates com.android.internal.pm.RoSystemFeatures, optionally compiling in
 // details about fixed system features defined by build flags. When disabled,
 // the APIs are simply passthrough stubs with no meaningful side effects.
+// TODO(b/203143243): Implement the `--feature=` aggregation  directly with a native soong module.
 genrule {
     name: "systemfeatures-gen-srcs",
     cmd: "$(location systemfeatures-gen-tool) com.android.internal.pm.RoSystemFeatures " +
         // --readonly=false (default) makes the codegen an effective no-op passthrough API.
         " --readonly=" + gen_readonly_feature_apis +
-        // For now, only export "android.hardware.type.*" system features APIs.
-        // TODO(b/203143243): Use an intermediate soong var that aggregates all declared
-        // RELEASE_SYSTEM_FEATURE_* declarations into a single arg.
-        " --feature-apis=AUTOMOTIVE,WATCH,TELEVISION,EMBEDDED,PC" +
-        " > $(out)",
+        " --feature=AUTOMOTIVE:" + select(release_flag("RELEASE_SYSTEM_FEATURE_AUTOMOTIVE"), {
+            any @ value: value,
+            default: "",
+        }) + " --feature=EMBEDDED:" + select(release_flag("RELEASE_SYSTEM_FEATURE_EMBEDDED"), {
+            any @ value: value,
+            default: "",
+        }) + " --feature=LEANBACK:" + select(release_flag("RELEASE_SYSTEM_FEATURE_LEANBACK"), {
+            any @ value: value,
+            default: "",
+        }) + " --feature=PC:" + select(release_flag("RELEASE_SYSTEM_FEATURE_PC"), {
+            any @ value: value,
+            default: "",
+        }) + " --feature=TELEVISION:" + select(release_flag("RELEASE_SYSTEM_FEATURE_TELEVISION"), {
+            any @ value: value,
+            default: "",
+        }) + " --feature=WATCH:" + select(release_flag("RELEASE_SYSTEM_FEATURE_WATCH"), {
+            any @ value: value,
+            default: "",
+        }) + " > $(out)",
     out: [
         "RoSystemFeatures.java",
     ],
diff --git a/tools/systemfeatures/src/com/android/systemfeatures/SystemFeaturesGenerator.kt b/tools/systemfeatures/src/com/android/systemfeatures/SystemFeaturesGenerator.kt
index 1abe77f..f260e27 100644
--- a/tools/systemfeatures/src/com/android/systemfeatures/SystemFeaturesGenerator.kt
+++ b/tools/systemfeatures/src/com/android/systemfeatures/SystemFeaturesGenerator.kt
@@ -188,7 +188,7 @@
                         ?: throw IllegalArgumentException(
                             "Invalid feature version input for $name: ${featureArgs[1]}"
                         )
-                FeatureInfo(name, featureArgs[1].toInt(), readonly = true)
+                FeatureInfo(name, featureVersion, readonly = true)
             }
         }
     }