diff --git a/phony/phony.go b/phony/phony.go
index ed6a2fe..305a434 100644
--- a/phony/phony.go
+++ b/phony/phony.go
@@ -28,7 +28,9 @@
 
 type phony struct {
 	android.ModuleBase
-	requiredModuleNames []string
+	requiredModuleNames       []string
+	hostRequiredModuleNames   []string
+	targetRequiredModuleNames []string
 }
 
 func PhonyFactory() android.Module {
@@ -40,8 +42,12 @@
 
 func (p *phony) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	p.requiredModuleNames = ctx.RequiredModuleNames()
-	if len(p.requiredModuleNames) == 0 {
-		ctx.PropertyErrorf("required", "phony must not have empty required dependencies in order to be useful(and therefore permitted).")
+	p.hostRequiredModuleNames = ctx.HostRequiredModuleNames()
+	p.targetRequiredModuleNames = ctx.TargetRequiredModuleNames()
+	if len(p.requiredModuleNames) == 0 &&
+		len(p.hostRequiredModuleNames) == 0 && len(p.targetRequiredModuleNames) == 0 {
+		ctx.PropertyErrorf("required", "phony must not have empty required dependencies "+
+			"in order to be useful(and therefore permitted).")
 	}
 }
 
@@ -54,7 +60,18 @@
 			if p.Host() {
 				fmt.Fprintln(w, "LOCAL_IS_HOST_MODULE := true")
 			}
-			fmt.Fprintln(w, "LOCAL_REQUIRED_MODULES := "+strings.Join(p.requiredModuleNames, " "))
+			if len(p.requiredModuleNames) > 0 {
+				fmt.Fprintln(w, "LOCAL_REQUIRED_MODULES :=",
+					strings.Join(p.requiredModuleNames, " "))
+			}
+			if len(p.hostRequiredModuleNames) > 0 {
+				fmt.Fprintln(w, "LOCAL_HOST_REQUIRED_MODULES :=",
+					strings.Join(p.hostRequiredModuleNames, " "))
+			}
+			if len(p.targetRequiredModuleNames) > 0 {
+				fmt.Fprintln(w, "LOCAL_TARGET_REQUIRED_MODULES :=",
+					strings.Join(p.targetRequiredModuleNames, " "))
+			}
 			fmt.Fprintln(w, "include $(BUILD_PHONY_PACKAGE)")
 		},
 	}