diff --git a/apex/builder.go b/apex/builder.go
index 66eaff1..1ec59a8 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -686,7 +686,7 @@
 		implicitInputs = append(implicitInputs, unsignedOutputFile)
 
 		// Run coverage analysis
-		apisUsedbyOutputFile := android.PathForModuleOut(ctx, a.Name()+".txt")
+		apisUsedbyOutputFile := android.PathForModuleOut(ctx, a.Name()+"_using.txt")
 		ctx.Build(pctx, android.BuildParams{
 			Rule:        generateAPIsUsedbyApexRule,
 			Implicits:   implicitInputs,
@@ -697,7 +697,19 @@
 				"readelf":   "${config.ClangBin}/llvm-readelf",
 			},
 		})
-		a.coverageOutputPath = apisUsedbyOutputFile
+		a.apisUsedByModuleFile = apisUsedbyOutputFile
+
+		apisBackedbyOutputFile := android.PathForModuleOut(ctx, a.Name()+"_backing.txt")
+		ndkLibraryList := android.PathForSource(ctx, "system/core/rootdir/etc/public.libraries.android.txt")
+		rule := android.NewRuleBuilder(pctx, ctx)
+		rule.Command().
+			Tool(android.PathForSource(ctx, "build/soong/scripts/gen_ndk_backedby_apex.sh")).
+			Text(imageDir.String()).
+			Implicits(implicitInputs).
+			Output(apisBackedbyOutputFile).
+			Input(ndkLibraryList)
+		rule.Build("ndk_backedby_list", "Generate API libraries backed by Apex")
+		a.apisBackedByModuleFile = apisBackedbyOutputFile
 
 		bundleConfig := a.buildBundleConfig(ctx)