Add support for a prebuilt_root_host type.

Test: art-tests
Change-Id: If013e46d2bbd9cc937a11fe7cf3b67eb8b262b55

androidmk/androidmk/androidmk_test.go

@@ -1118,6 +1118,25 @@ prebuilt_usr_share_host {
 
 	src: "foo.txt",
 }
+`,
+	},
+	{
+		desc: "prebuilt_root_host",
+		in: `
+include $(CLEAR_VARS)
+LOCAL_MODULE := foo
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_PATH := $(HOST_OUT)/subdir
+LOCAL_SRC_FILES := foo.txt
+include $(BUILD_PREBUILT)
+`,
+		expected: `
+prebuilt_root_host {
+	name: "foo",
+
+	src: "foo.txt",
+	relative_install_path: "subdir",
+}
 `,
 	},
 	{

bpfix/bpfix/bpfix.go

@@ -610,7 +610,11 @@ func (f etcPrebuiltModuleUpdate) update(m *parser.Module, path string) bool {
 }
 
 var localModuleUpdate = map[string][]etcPrebuiltModuleUpdate{
-	"HOST_OUT":    {{prefix: "/etc", modType: "prebuilt_etc_host"}, {prefix: "/usr/share", modType: "prebuilt_usr_share_host"}},
+	"HOST_OUT": {
+		{prefix: "/etc", modType: "prebuilt_etc_host"},
+		{prefix: "/usr/share", modType: "prebuilt_usr_share_host"},
+		{prefix: "", modType: "prebuilt_root_host"},
+	},
 	"PRODUCT_OUT": {{prefix: "/system/etc"}, {prefix: "/vendor/etc", flags: []string{"proprietary"}}},
 	"TARGET_OUT": {{prefix: "/usr/share", modType: "prebuilt_usr_share"}, {prefix: "/fonts", modType: "prebuilt_font"},
 		{prefix: "/etc/firmware", modType: "prebuilt_firmware"}, {prefix: "/vendor/firmware", modType: "prebuilt_firmware", flags: []string{"proprietary"}},

bpfix/bpfix/bpfix_test.go

@@ -828,6 +828,46 @@ func TestRewritePrebuiltEtc(t *testing.T) {
 		}
 		`,
 		},
+		{
+			name: "prebuilt_etc sub_dir",
+			in: `
+			prebuilt_etc_host {
+			name: "foo",
+			src: "bar",
+			local_module_path: {
+				var: "HOST_OUT",
+				fixed: "/etc/baz",
+			},
+		}
+		`,
+			out: `prebuilt_etc_host {
+			name: "foo",
+			src: "bar",
+			relative_install_path: "baz",
+
+		}
+		`,
+		},
+		{
+			name: "prebuilt_etc sub_dir",
+			in: `
+			prebuilt_etc_host {
+			name: "foo",
+			src: "bar",
+			local_module_path: {
+				var: "HOST_OUT",
+				fixed: "/baz/sub",
+			},
+		}
+		`,
+			out: `prebuilt_root_host {
+			name: "foo",
+			src: "bar",
+			relative_install_path: "baz/sub",
+
+		}
+		`,
+		},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {

etc/prebuilt_etc.go

@@ -54,6 +54,7 @@ func RegisterPrebuiltEtcBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("prebuilt_etc", PrebuiltEtcFactory)
 	ctx.RegisterModuleType("prebuilt_etc_host", PrebuiltEtcHostFactory)
 	ctx.RegisterModuleType("prebuilt_root", PrebuiltRootFactory)
+	ctx.RegisterModuleType("prebuilt_root_host", PrebuiltRootHostFactory)
 	ctx.RegisterModuleType("prebuilt_usr_share", PrebuiltUserShareFactory)
 	ctx.RegisterModuleType("prebuilt_usr_share_host", PrebuiltUserShareHostFactory)
 	ctx.RegisterModuleType("prebuilt_font", PrebuiltFontFactory)
@@ -454,6 +455,17 @@ func PrebuiltRootFactory() android.Module {
 	return module
 }
 
+// prebuilt_root_host is for a host prebuilt artifact that is installed in $(HOST_OUT)/<sub_dir>
+// directory.
+func PrebuiltRootHostFactory() android.Module {
+	module := &PrebuiltEtc{}
+	InitPrebuiltEtcModule(module, ".")
+	// This module is host-only
+	android.InitAndroidArchModule(module, android.HostSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
+	return module
+}
+
 // prebuilt_usr_share is for a prebuilt artifact that is installed in
 // <partition>/usr/share/<sub_dir> directory.
 func PrebuiltUserShareFactory() android.Module {