Unless overridden include LICENSE files in notices.

As a second step to removing the go/android3p instructions to copy or
to link NOTICE to LICENSE, include LICENSE files in the notices, which
will allow deleting all of the copied/linked NOTICE files.

The change causes a few additions to the system image notice files.

Test: manually built and compared before and after notices
Change-Id: Ia7bc58e2eba7bed5e63934881b5298201a93bc3e

android/androidmk.go

@@ -236,8 +236,8 @@ func (a *AndroidMkEntries) fillInEntries(config Config, bpPath string, mod bluep
 		}
 	}
 
-	if amod.noticeFile.Valid() {
-		a.SetString("LOCAL_NOTICE_FILE", amod.noticeFile.String())
+	if len(amod.noticeFiles) > 0 {
+		a.SetString("LOCAL_NOTICE_FILE", strings.Join(amod.noticeFiles.Strings(), " "))
 	}
 
 	if host {

android/module.go

@@ -218,7 +218,7 @@ type Module interface {
 	ExportedToMake() bool
 	InitRc() Paths
 	VintfFragments() Paths
-	NoticeFile() OptionalPath
+	NoticeFiles() Paths
 
 	AddProperties(props ...interface{})
 	GetProperties() []interface{}
@@ -645,7 +645,7 @@ type ModuleBase struct {
 	noAddressSanitizer bool
 	installFiles       Paths
 	checkbuildFiles    Paths
-	noticeFile         OptionalPath
+	noticeFiles        Paths
 
 	// Used by buildTargetSingleton to create checkbuild and per-directory build targets
 	// Only set on the final variant of each module
@@ -904,8 +904,8 @@ func (m *ModuleBase) Owner() string {
 	return String(m.commonProperties.Owner)
 }
 
-func (m *ModuleBase) NoticeFile() OptionalPath {
-	return m.noticeFile
+func (m *ModuleBase) NoticeFiles() Paths {
+	return m.noticeFiles
 }
 
 func (m *ModuleBase) setImageVariation(variant string) {
@@ -1151,12 +1151,25 @@ func (m *ModuleBase) GenerateBuildActions(blueprintCtx blueprint.ModuleContext)
 			}
 		})
 
-		notice := proptools.StringDefault(m.commonProperties.Notice, "NOTICE")
+		m.noticeFiles = make([]Path, 0)
+		optPath := OptionalPath{}
+		notice := proptools.StringDefault(m.commonProperties.Notice, "")
 		if module := SrcIsModule(notice); module != "" {
-			m.noticeFile = ctx.ExpandOptionalSource(&notice, "notice")
-		} else {
+			optPath = ctx.ExpandOptionalSource(&notice, "notice")
+		} else if notice != "" {
 			noticePath := filepath.Join(ctx.ModuleDir(), notice)
-			m.noticeFile = ExistentPathForSource(ctx, noticePath)
+			optPath = ExistentPathForSource(ctx, noticePath)
+		}
+		if optPath.Valid() {
+			m.noticeFiles = append(m.noticeFiles, optPath.Path())
+		} else {
+			for _, notice = range []string{"LICENSE", "LICENCE", "NOTICE"} {
+				noticePath := filepath.Join(ctx.ModuleDir(), notice)
+				optPath = ExistentPathForSource(ctx, noticePath)
+				if optPath.Valid() {
+					m.noticeFiles = append(m.noticeFiles, optPath.Path())
+				}
+			}
 		}
 
 		m.module.GenerateAndroidBuildActions(ctx)

apex/androidmk.go

@@ -120,8 +120,8 @@ func (a *apexBundle) androidMkForFiles(w io.Writer, apexBundleName, apexName, mo
 				fmt.Fprintln(w, "LOCAL_MODULE_SYMLINKS :=", strings.Join(fi.symlinks, " "))
 			}
 
-			if fi.module != nil && fi.module.NoticeFile().Valid() {
-				fmt.Fprintln(w, "LOCAL_NOTICE_FILE :=", fi.module.NoticeFile().Path().String())
+			if fi.module != nil && len(fi.module.NoticeFiles()) > 0 {
+				fmt.Fprintln(w, "LOCAL_NOTICE_FILE :=", strings.Join(fi.module.NoticeFiles().Strings(), " "))
 			}
 		} else {
 			fmt.Fprintln(w, "LOCAL_MODULE_PATH :=", pathWhenActivated)

apex/builder.go

@@ -215,15 +215,15 @@ func (a *apexBundle) buildNoticeFiles(ctx android.ModuleContext, apexFileName st
 	noticeFiles := []android.Path{}
 	for _, f := range a.filesInfo {
 		if f.module != nil {
-			notice := f.module.NoticeFile()
-			if notice.Valid() {
-				noticeFiles = append(noticeFiles, notice.Path())
+			notices := f.module.NoticeFiles()
+			if len(notices) > 0 {
+				noticeFiles = append(noticeFiles, notices...)
 			}
 		}
 	}
 	// append the notice file specified in the apex module itself
-	if a.NoticeFile().Valid() {
-		noticeFiles = append(noticeFiles, a.NoticeFile().Path())
+	if len(a.NoticeFiles()) > 0 {
+		noticeFiles = append(noticeFiles, a.NoticeFiles()...)
 	}
 
 	if len(noticeFiles) == 0 {

cc/snapshot_utils.go

@@ -117,6 +117,17 @@ func copyFile(ctx android.SingletonContext, path android.Path, out string) andro
 	return outPath
 }
 
+func combineNotices(ctx android.SingletonContext, paths android.Paths, out string) android.OutputPath {
+	outPath := android.PathForOutput(ctx, out)
+	ctx.Build(pctx, android.BuildParams{
+		Rule:        android.Cat,
+		Inputs:      paths,
+		Output:      outPath,
+		Description: "combine notices for " + out,
+	})
+	return outPath
+}
+
 func writeStringToFile(ctx android.SingletonContext, content, out string) android.OutputPath {
 	outPath := android.PathForOutput(ctx, out)
 	ctx.Build(pctx, android.BuildParams{

cc/vendor_snapshot.go

@@ -661,14 +661,14 @@ func (c *vendorSnapshotSingleton) GenerateBuildActions(ctx android.SingletonCont
 			headers = append(headers, exportedHeaders(ctx, l)...)
 		}
 
-		if m.NoticeFile().Valid() {
+		if len(m.NoticeFiles()) > 0 {
 			noticeName := ctx.ModuleName(m) + ".txt"
 			noticeOut := filepath.Join(noticeDir, noticeName)
 			// skip already copied notice file
 			if !installedNotices[noticeOut] {
 				installedNotices[noticeOut] = true
-				snapshotOutputs = append(snapshotOutputs, copyFile(
-					ctx, m.NoticeFile().Path(), noticeOut))
+				snapshotOutputs = append(snapshotOutputs, combineNotices(
+					ctx, m.NoticeFiles(), noticeOut))
 			}
 		}
 	})

cc/vndk.go

@@ -644,13 +644,13 @@ func (c *vndkSnapshotSingleton) GenerateBuildActions(ctx android.SingletonContex
 		moduleNames[stem] = ctx.ModuleName(m)
 		modulePaths[stem] = ctx.ModuleDir(m)
 
-		if m.NoticeFile().Valid() {
+		if len(m.NoticeFiles()) > 0 {
 			noticeName := stem + ".txt"
 			// skip already copied notice file
 			if _, ok := noticeBuilt[noticeName]; !ok {
 				noticeBuilt[noticeName] = true
-				snapshotOutputs = append(snapshotOutputs, copyFile(
-					ctx, m.NoticeFile().Path(), filepath.Join(noticeDir, noticeName)))
+				snapshotOutputs = append(snapshotOutputs, combineNotices(
+					ctx, m.NoticeFiles(), filepath.Join(noticeDir, noticeName)))
 			}
 		}
 

java/app.go

@@ -390,16 +390,20 @@ func (a *AndroidApp) noticeBuildActions(ctx android.ModuleContext) {
 			return false
 		}
 
-		path := child.(android.Module).NoticeFile()
-		if path.Valid() {
-			noticePathSet[path.Path()] = true
+		paths := child.(android.Module).NoticeFiles()
+		if len(paths) > 0 {
+			for _, path := range paths {
+				noticePathSet[path] = true
+			}
 		}
 		return true
 	})
 
 	// If the app has one, add it too.
-	if a.NoticeFile().Valid() {
-		noticePathSet[a.NoticeFile().Path()] = true
+	if len(a.NoticeFiles()) > 0 {
+		for _, path := range a.NoticeFiles() {
+			noticePathSet[path] = true
+		}
 	}
 
 	if len(noticePathSet) == 0 {