diff --git a/android/filegroup.go b/android/filegroup.go
index 0aabb68..bc881ed 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -55,6 +55,9 @@
 	DefaultableModuleBase
 	properties fileGroupProperties
 	srcs       Paths
+
+	// Aconfig files for all transitive deps.  Also exposed via TransitiveDeclarationsInfo
+	mergedAconfigFiles map[string]Paths
 }
 
 var _ SourceFileProducer = (*fileGroup)(nil)
@@ -93,6 +96,7 @@
 		fg.srcs = PathsWithModuleSrcSubDir(ctx, fg.srcs, String(fg.properties.Path))
 	}
 	SetProvider(ctx, blueprint.SrcsFileProviderKey, blueprint.SrcsFileProviderData{SrcPaths: fg.srcs.Strings()})
+	CollectDependencyAconfigFiles(ctx, &fg.mergedAconfigFiles)
 }
 
 func (fg *fileGroup) Srcs() Paths {
diff --git a/apex/apex.go b/apex/apex.go
index ba636f1..72886ca 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -480,6 +480,9 @@
 	javaApisUsedByModuleFile     android.ModuleOutPath
 
 	aconfigFiles []android.Path
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 // apexFileClass represents a type of file that can be included in APEX.
@@ -2356,6 +2359,7 @@
 			return
 		}
 	}
+	android.CollectDependencyAconfigFiles(ctx, &a.mergedAconfigFiles)
 
 	////////////////////////////////////////////////////////////////////////////////////////////
 	// 3) some fields in apexBundle struct are configured
@@ -2515,6 +2519,9 @@
 type Defaults struct {
 	android.ModuleBase
 	android.DefaultsModuleBase
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 // apex_defaults provides defaultable properties to other apex modules.
@@ -2537,6 +2544,10 @@
 	android.OverrideModuleBase
 }
 
+func (d *Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	android.CollectDependencyAconfigFiles(ctx, &d.mergedAconfigFiles)
+}
+
 func (o *OverrideApex) GenerateAndroidBuildActions(_ android.ModuleContext) {
 	// All the overrides happen in the base module.
 }
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 188875a..c27b072 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -483,6 +483,9 @@
 	inputApex android.Path
 
 	provenanceMetaDataFile android.OutputPath
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 type ApexFileProperties struct {
@@ -837,6 +840,8 @@
 		p.installedFile = ctx.InstallFile(p.installDir, p.installFilename, p.inputApex, p.compatSymlinks...)
 		p.provenanceMetaDataFile = provenance.GenerateArtifactProvenanceMetaData(ctx, p.inputApex, p.installedFile)
 	}
+
+	android.CollectDependencyAconfigFiles(ctx, &p.mergedAconfigFiles)
 }
 
 func (p *Prebuilt) ProvenanceMetaDataFile() android.OutputPath {
diff --git a/cc/cc.go b/cc/cc.go
index d34daec..fd7a38a 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -1994,6 +1994,10 @@
 	return false
 }
 
+func (d *Defaults) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	android.CollectDependencyAconfigFiles(ctx, &d.mergedAconfigFiles)
+}
+
 func (c *Module) GenerateAndroidBuildActions(actx android.ModuleContext) {
 	// Handle the case of a test module split by `test_per_src` mutator.
 	//
@@ -4075,6 +4079,9 @@
 	android.ModuleBase
 	android.DefaultsModuleBase
 	android.ApexModuleBase
+
+	// Aconfig files for all transitive deps.  Also exposed via TransitiveDeclarationsInfo
+	mergedAconfigFiles map[string]android.Paths
 }
 
 // cc_defaults provides a set of properties that can be inherited by other cc
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index 66df101..7642378 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -155,6 +155,9 @@
 	additionalDependencies *android.Paths
 
 	makeClass string
+
+	// Aconfig files for all transitive deps.  Also exposed via TransitiveDeclarationsInfo
+	mergedAconfigFiles map[string]android.Paths
 }
 
 type Defaults struct {
@@ -365,6 +368,7 @@
 		symlinks:       p.properties.Symlinks,
 	}
 	p.addInstallRules(ctx, ip)
+	android.CollectDependencyAconfigFiles(ctx, &p.mergedAconfigFiles)
 }
 
 type installProperties struct {
@@ -433,11 +437,16 @@
 				if p.additionalDependencies != nil {
 					entries.AddStrings("LOCAL_ADDITIONAL_DEPENDENCIES", p.additionalDependencies.Strings()...)
 				}
+				android.SetAconfigFileMkEntries(p.AndroidModuleBase(), entries, p.mergedAconfigFiles)
 			},
 		},
 	}}
 }
 
+func (p *PrebuiltEtc) AndroidModuleBase() *android.ModuleBase {
+	return &p.ModuleBase
+}
+
 func InitPrebuiltEtcModule(p *PrebuiltEtc, dirBase string) {
 	p.installDirBase = dirBase
 	p.AddProperties(&p.properties)
diff --git a/genrule/genrule.go b/genrule/genrule.go
index 87f6392..fbda074 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -184,6 +184,9 @@
 
 	subName string
 	subDir  string
+
+	// Aconfig files for all transitive deps.  Also exposed via TransitiveDeclarationsInfo
+	mergedAconfigFiles map[string]android.Paths
 }
 
 type taskFunc func(ctx android.ModuleContext, rawCommand string, srcFiles android.Paths) []generateTask
@@ -610,6 +613,24 @@
 		})
 		g.outputDeps = android.Paths{phonyFile}
 	}
+	android.CollectDependencyAconfigFiles(ctx, &g.mergedAconfigFiles)
+}
+
+func (g *Module) AndroidMkEntries() []android.AndroidMkEntries {
+	ret := android.AndroidMkEntries{
+		OutputFile: android.OptionalPathForPath(g.outputFiles[0]),
+		ExtraEntries: []android.AndroidMkExtraEntriesFunc{
+			func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
+				android.SetAconfigFileMkEntries(g.AndroidModuleBase(), entries, g.mergedAconfigFiles)
+			},
+		},
+	}
+
+	return []android.AndroidMkEntries{ret}
+}
+
+func (g *Module) AndroidModuleBase() *android.ModuleBase {
+	return &g.ModuleBase
 }
 
 // Collect information for opening IDE project files in java/jdeps.go.
diff --git a/java/aar.go b/java/aar.go
index 15a542e..7fc39b6 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -980,6 +980,9 @@
 
 	sdkVersion    android.SdkSpec
 	minSdkVersion android.ApiLevel
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 var _ android.OutputFileProducer = (*AARImport)(nil)
@@ -1274,6 +1277,7 @@
 	android.SetProvider(ctx, JniPackageProvider, JniPackageInfo{
 		JniPackages: a.jniPackages,
 	})
+	android.CollectDependencyAconfigFiles(ctx, &a.mergedAconfigFiles)
 }
 
 func (a *AARImport) HeaderJars() android.Paths {
diff --git a/java/app_import.go b/java/app_import.go
index ff0f5fe..997274c 100644
--- a/java/app_import.go
+++ b/java/app_import.go
@@ -86,6 +86,9 @@
 	hideApexVariantFromMake bool
 
 	provenanceMetaDataFile android.OutputPath
+
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
 }
 
 type AndroidAppImportProperties struct {
@@ -377,6 +380,7 @@
 		artifactPath := android.PathForModuleSrc(ctx, *a.properties.Apk)
 		a.provenanceMetaDataFile = provenance.GenerateArtifactProvenanceMetaData(ctx, artifactPath, a.installPath)
 	}
+	android.CollectDependencyAconfigFiles(ctx, &a.mergedAconfigFiles)
 
 	// TODO: androidmk converter jni libs
 }
diff --git a/java/droidstubs.go b/java/droidstubs.go
index bdbaf92..04e6be8 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -89,6 +89,9 @@
 	metadataZip android.WritablePath
 	metadataDir android.WritablePath
 
+	// Single aconfig "cache file" merged from this module and all dependencies.
+	mergedAconfigFiles map[string]android.Paths
+
 	exportableApiFile                 android.WritablePath
 	exportableRemovedApiFile          android.WritablePath
 	exportableNullabilityWarningsFile android.WritablePath
@@ -1255,6 +1258,7 @@
 
 		rule.Build("nullabilityWarningsCheck", "nullability warnings check")
 	}
+	android.CollectDependencyAconfigFiles(ctx, &d.mergedAconfigFiles)
 }
 
 func (d *Droidstubs) createApiContribution(ctx android.DefaultableHookContext) {
diff --git a/python/binary.go b/python/binary.go
index 85084a4..d6750c6 100644
--- a/python/binary.go
+++ b/python/binary.go
@@ -71,6 +71,9 @@
 	installedDest android.Path
 
 	androidMkSharedLibs []string
+
+	// Aconfig files for all transitive deps.  Also exposed via TransitiveDeclarationsInfo
+	mergedAconfigFiles map[string]android.Paths
 }
 
 var _ android.AndroidMkEntriesProvider = (*PythonBinaryModule)(nil)
@@ -103,6 +106,7 @@
 	p.buildBinary(ctx)
 	p.installedDest = ctx.InstallFile(installDir(ctx, "bin", "", ""),
 		p.installSource.Base(), p.installSource)
+	android.CollectDependencyAconfigFiles(ctx, &p.mergedAconfigFiles)
 }
 
 func (p *PythonBinaryModule) buildBinary(ctx android.ModuleContext) {
@@ -166,6 +170,7 @@
 			entries.SetString("LOCAL_MODULE_STEM", stem)
 			entries.AddStrings("LOCAL_SHARED_LIBRARIES", p.androidMkSharedLibs...)
 			entries.SetBool("LOCAL_CHECK_ELF_FILES", false)
+			android.SetAconfigFileMkEntries(&p.ModuleBase, entries, p.mergedAconfigFiles)
 		})
 
 	return []android.AndroidMkEntries{entries}
diff --git a/python/test.go b/python/test.go
index 782f39f..7eb9136 100644
--- a/python/test.go
+++ b/python/test.go
@@ -149,6 +149,7 @@
 	// just use buildBinary() so that the binary is not installed into the location
 	// it would be for regular binaries.
 	p.PythonLibraryModule.GenerateAndroidBuildActions(ctx)
+	android.CollectDependencyAconfigFiles(ctx, &p.mergedAconfigFiles)
 	p.buildBinary(ctx)
 
 	var configs []tradefed.Option
@@ -228,6 +229,7 @@
 			}
 
 			entries.SetBoolIfTrue("LOCAL_DISABLE_AUTO_GENERATE_TEST_CONFIG", !BoolDefault(p.binaryProperties.Auto_gen_config, true))
+			android.SetAconfigFileMkEntries(&p.ModuleBase, entries, p.mergedAconfigFiles)
 
 			p.testProperties.Test_options.SetAndroidMkEntries(entries)
 		})