Merge "Break constant information out of product vars"
diff --git a/android/module.go b/android/module.go
index 76fe8dc..ba47453 100644
--- a/android/module.go
+++ b/android/module.go
@@ -550,6 +550,7 @@
 	ExportedToMake() bool
 	InitRc() Paths
 	VintfFragments() Paths
+	EffectiveLicenseKinds() []string
 	EffectiveLicenseFiles() Paths
 
 	AddProperties(props ...interface{})
@@ -2024,6 +2025,10 @@
 	return m.commonProperties.NamespaceExportedToMake
 }
 
+func (m *ModuleBase) EffectiveLicenseKinds() []string {
+	return m.commonProperties.Effective_license_kinds
+}
+
 func (m *ModuleBase) EffectiveLicenseFiles() Paths {
 	result := make(Paths, 0, len(m.commonProperties.Effective_license_text))
 	for _, p := range m.commonProperties.Effective_license_text {
diff --git a/android/namespace.go b/android/namespace.go
index c47a1c5..ebf85a1 100644
--- a/android/namespace.go
+++ b/android/namespace.go
@@ -325,8 +325,8 @@
 	namespace.id = strconv.Itoa(id)
 }
 
-func (r *NameResolver) MissingDependencyError(depender string, dependerNamespace blueprint.Namespace, depName string) (err error) {
-	text := fmt.Sprintf("%q depends on undefined module %q", depender, depName)
+func (r *NameResolver) MissingDependencyError(depender string, dependerNamespace blueprint.Namespace, depName string, guess []string) (err error) {
+	text := fmt.Sprintf("%q depends on undefined module %q.", depender, depName)
 
 	_, _, isAbs := r.parseFullyQualifiedName(depName)
 	if isAbs {
@@ -345,9 +345,10 @@
 		}
 		_, skipped := namespace.moduleContainer.SkippedModuleFromName(depName, nil)
 		if skipped {
-			skippedDepErrors = append(skippedDepErrors, namespace.moduleContainer.MissingDependencyError(depender, dependerNamespace, depName))
+			skippedDepErrors = append(skippedDepErrors, namespace.moduleContainer.MissingDependencyError(depender, dependerNamespace, depName, nil))
 		}
 	}
+
 	if len(foundInNamespaces) > 0 {
 		// determine which namespaces are visible to dependerNamespace
 		dependerNs := dependerNamespace.(*Namespace)
@@ -363,6 +364,10 @@
 		text += fmt.Sprintf("\n%s", err.Error())
 	}
 
+	if len(guess) > 0 {
+		text += fmt.Sprintf("\nOr did you mean %q?", guess)
+	}
+
 	return fmt.Errorf(text)
 }
 
diff --git a/android/namespace_test.go b/android/namespace_test.go
index 7a387a0..ea51c6e 100644
--- a/android/namespace_test.go
+++ b/android/namespace_test.go
@@ -174,9 +174,10 @@
 			`,
 		}),
 	).
-		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir3/Android.bp:4:5: "b" depends on undefined module "a"
+		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir3/Android.bp:4:5: "b" depends on undefined module "a".
 Module "b" is defined in namespace "dir3" which can read these 2 namespaces: ["dir3" "."]
-Module "a" can be found in these namespaces: ["dir1" "dir2"]\E`)).
+Module "a" can be found in these namespaces: ["dir1" "dir2"]\E
+Or did you mean ["soong_namespace"]?`)).
 		RunTest(t)
 }
 
@@ -421,9 +422,10 @@
 			`,
 		}),
 	).
-		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir1/subdir1/Android.bp:4:5: "b" depends on undefined module "a"
+		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir1/subdir1/Android.bp:4:5: "b" depends on undefined module "a".
 Module "b" is defined in namespace "dir1/subdir1" which can read these 2 namespaces: ["dir1/subdir1" "."]
-Module "a" can be found in these namespaces: ["dir1"]\E`)).
+Module "a" can be found in these namespaces: ["dir1"]\E
+Or did you mean ["soong_namespace"]?`)).
 		RunTest(t)
 }
 
@@ -481,9 +483,10 @@
 			`,
 		}),
 	).
-		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir3/Android.bp:5:5: "c" depends on undefined module "a"
+		ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(`\Qdir3/Android.bp:5:5: "c" depends on undefined module "a".
 Module "c" is defined in namespace "dir3" which can read these 3 namespaces: ["dir3" "dir2" "."]
-Module "a" can be found in these namespaces: ["dir1"]\E`)).
+Module "a" can be found in these namespaces: ["dir1"]\E
+Or did you mean ["b"]?`)).
 		RunTest(t)
 }
 
diff --git a/android/visibility.go b/android/visibility.go
index 5955133..3130135 100644
--- a/android/visibility.go
+++ b/android/visibility.go
@@ -47,7 +47,6 @@
 //   the dependency. If it cannot then an error is reported.
 //
 // TODO(b/130631145) - Make visibility work properly with prebuilts.
-// TODO(b/130796911) - Make visibility work properly with defaults.
 
 // Patterns for the values that can be specified in visibility property.
 const (
diff --git a/cc/config/global.go b/cc/config/global.go
index 5b2191a..a2d5cf4 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -111,6 +111,9 @@
 
 		// Turn off FMA which got enabled by default in clang-r445002 (http://b/218805949)
 		"-ffp-contract=off",
+
+		// Turn off stack protector check for noreturn calls. (http://b/264965700)
+		"-mllvm -disable-check-noreturn-call",
 	}
 
 	commonGlobalConlyflags = []string{}
@@ -147,6 +150,9 @@
 	commonGlobalLldflags = []string{
 		"-fuse-ld=lld",
 		"-Wl,--icf=safe",
+
+		// Turn off stack protector check for noreturn calls. (http://b/264965700)
+		"-Wl,-mllvm,-disable-check-noreturn-call",
 	}
 
 	deviceGlobalCppflags = []string{
@@ -315,6 +321,9 @@
 	}
 
 	VersionScriptFlagPrefix = "-Wl,--version-script,"
+
+	VisibilityHiddenFlag  = "-fvisibility=hidden"
+	VisibilityDefaultFlag = "-fvisibility=default"
 )
 
 // BazelCcToolchainVars generates bzl file content containing variables for
@@ -405,6 +414,9 @@
 
 	exportedVars.ExportString("VersionScriptFlagPrefix", VersionScriptFlagPrefix)
 
+	exportedVars.ExportString("VisibilityHiddenFlag", VisibilityHiddenFlag)
+	exportedVars.ExportString("VisibilityDefaultFlag", VisibilityDefaultFlag)
+
 	// Everything in these lists is a crime against abstraction and dependency tracking.
 	// Do not add anything to this list.
 	commonGlobalIncludes := []string{
diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index 622558e..dffc6c6 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -142,6 +142,13 @@
 						staticLibInstallPaths, library.ndkSysrootPath)
 				}
 			}
+
+			if object, ok := m.linker.(*objectLinker); ok {
+				if object.ndkSysrootPath != nil {
+					staticLibInstallPaths = append(
+						staticLibInstallPaths, object.ndkSysrootPath)
+				}
+			}
 		}
 	})
 
diff --git a/cc/object.go b/cc/object.go
index ef44467..d65cdea 100644
--- a/cc/object.go
+++ b/cc/object.go
@@ -44,6 +44,10 @@
 type objectLinker struct {
 	*baseLinker
 	Properties ObjectLinkerProperties
+
+	// Location of the object in the sysroot. Empty if the object is not
+	// included in the NDK.
+	ndkSysrootPath android.Path
 }
 
 type objectBazelHandler struct {
@@ -99,6 +103,10 @@
 	// Indicates that this module is a CRT object. CRT objects will be split
 	// into a variant per-API level between min_sdk_version and current.
 	Crt *bool
+
+	// Indicates that this module should not be included in the NDK sysroot.
+	// Only applies to CRT objects. Defaults to false.
+	Exclude_from_ndk_sysroot *bool
 }
 
 func newObject(hod android.HostOrDeviceSupported) *Module {
@@ -268,17 +276,28 @@
 
 	objs = objs.Append(deps.Objs)
 
-	var outputFile android.Path
+	var output android.WritablePath
 	builderFlags := flagsToBuilderFlags(flags)
 	outputName := ctx.ModuleName()
 	if !strings.HasSuffix(outputName, objectExtension) {
 		outputName += objectExtension
 	}
 
-	if len(objs.objFiles) == 1 && String(object.Properties.Linker_script) == "" {
-		output := android.PathForModuleOut(ctx, outputName)
-		outputFile = output
+	// isForPlatform is terribly named and actually means isNotApex.
+	if Bool(object.Properties.Crt) &&
+		!Bool(object.Properties.Exclude_from_ndk_sysroot) && ctx.useSdk() &&
+		ctx.isSdkVariant() && ctx.isForPlatform() {
 
+		output = getVersionedLibraryInstallPath(ctx,
+			nativeApiLevelOrPanic(ctx, ctx.sdkVersion())).Join(ctx, outputName)
+		object.ndkSysrootPath = output
+	} else {
+		output = android.PathForModuleOut(ctx, outputName)
+	}
+
+	outputFile := output
+
+	if len(objs.objFiles) == 1 && String(object.Properties.Linker_script) == "" {
 		if String(object.Properties.Prefix_symbols) != "" {
 			transformBinaryPrefixSymbols(ctx, String(object.Properties.Prefix_symbols), objs.objFiles[0],
 				builderFlags, output)
@@ -290,9 +309,6 @@
 			})
 		}
 	} else {
-		output := android.PathForModuleOut(ctx, outputName)
-		outputFile = output
-
 		if String(object.Properties.Prefix_symbols) != "" {
 			input := android.PathForModuleOut(ctx, "unprefixed", outputName)
 			transformBinaryPrefixSymbols(ctx, String(object.Properties.Prefix_symbols), input,
diff --git a/cc/object_test.go b/cc/object_test.go
index 5359a35..b1e2a0f 100644
--- a/cc/object_test.go
+++ b/cc/object_test.go
@@ -65,7 +65,7 @@
 	variant := "android_arm64_armv8-a_sdk"
 	crt := ctx.ModuleForTests("bin", variant).Rule("ld").Args["crtBegin"]
 	android.AssertStringDoesContain(t, "crt dep of sdk variant", crt,
-		variant+"_29/crtbegin_dynamic.o")
+		"29/crtbegin_dynamic.o")
 
 	// platform variant uses the crt object built for platform
 	variant = "android_arm64_armv8-a"
diff --git a/cc/vndk.go b/cc/vndk.go
index 3b7c87d..be66cd7 100644
--- a/cc/vndk.go
+++ b/cc/vndk.go
@@ -674,8 +674,12 @@
 	snapshotArchDir := filepath.Join(snapshotDir, ctx.DeviceConfig().DeviceArch())
 
 	configsDir := filepath.Join(snapshotArchDir, "configs")
+	noticeDir := filepath.Join(snapshotArchDir, "NOTICE_FILES")
 	includeDir := filepath.Join(snapshotArchDir, "include")
 
+	// set of notice files copied.
+	noticeBuilt := make(map[string]bool)
+
 	// paths of VNDK modules for GPL license checking
 	modulePaths := make(map[string]string)
 
@@ -700,28 +704,36 @@
 		snapshotLibOut := filepath.Join(snapshotArchDir, targetArch, "shared", vndkType, libPath.Base())
 		ret = append(ret, snapshot.CopyFileRule(pctx, ctx, libPath, snapshotLibOut))
 
+		// json struct to export snapshot information
+		prop := struct {
+			LicenseKinds        []string `json:",omitempty"`
+			LicenseTexts        []string `json:",omitempty"`
+			ExportedDirs        []string `json:",omitempty"`
+			ExportedSystemDirs  []string `json:",omitempty"`
+			ExportedFlags       []string `json:",omitempty"`
+			RelativeInstallPath string   `json:",omitempty"`
+		}{}
+
+		prop.LicenseKinds = m.EffectiveLicenseKinds()
+		prop.LicenseTexts = m.EffectiveLicenseFiles().Strings()
+
 		if ctx.Config().VndkSnapshotBuildArtifacts() {
-			prop := struct {
-				ExportedDirs        []string `json:",omitempty"`
-				ExportedSystemDirs  []string `json:",omitempty"`
-				ExportedFlags       []string `json:",omitempty"`
-				RelativeInstallPath string   `json:",omitempty"`
-			}{}
 			exportedInfo := ctx.ModuleProvider(m, FlagExporterInfoProvider).(FlagExporterInfo)
 			prop.ExportedFlags = exportedInfo.Flags
 			prop.ExportedDirs = exportedInfo.IncludeDirs.Strings()
 			prop.ExportedSystemDirs = exportedInfo.SystemIncludeDirs.Strings()
 			prop.RelativeInstallPath = m.RelativeInstallPath()
-
-			propOut := snapshotLibOut + ".json"
-
-			j, err := json.Marshal(prop)
-			if err != nil {
-				ctx.Errorf("json marshal to %q failed: %#v", propOut, err)
-				return nil, false
-			}
-			ret = append(ret, snapshot.WriteStringToFileRule(ctx, string(j), propOut))
 		}
+
+		propOut := snapshotLibOut + ".json"
+
+		j, err := json.Marshal(prop)
+		if err != nil {
+			ctx.Errorf("json marshal to %q failed: %#v", propOut, err)
+			return nil, false
+		}
+		ret = append(ret, snapshot.WriteStringToFileRule(ctx, string(j), propOut))
+
 		return ret, true
 	}
 
@@ -761,6 +773,14 @@
 		moduleNames[stem] = ctx.ModuleName(m)
 		modulePaths[stem] = ctx.ModuleDir(m)
 
+		for _, notice := range m.EffectiveLicenseFiles() {
+			if _, ok := noticeBuilt[notice.String()]; !ok {
+				noticeBuilt[notice.String()] = true
+				snapshotOutputs = append(snapshotOutputs, snapshot.CopyFileRule(
+					pctx, ctx, notice, filepath.Join(noticeDir, notice.String())))
+			}
+		}
+
 		if ctx.Config().VndkSnapshotBuildArtifacts() {
 			headers = append(headers, m.SnapshotHeaders()...)
 		}