Merge "Rename cryptic symbols in symlink_forest.go ."
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 8d561d2..4598995 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -321,9 +321,8 @@
 // the invocation returned an error code.
 func (r *builtinBazelRunner) issueBazelCommand(paths *bazelPaths, runName bazel.RunName, command bazelCommand,
 	extraFlags ...string) (string, string, error) {
-	cmdFlags := []string{"--output_base=" + paths.outputBase, command.command}
+	cmdFlags := []string{"--output_base=" + absolutePath(paths.outputBase), command.command}
 	cmdFlags = append(cmdFlags, command.expression)
-	cmdFlags = append(cmdFlags, "--package_path=%workspace%/"+paths.intermediatesDir())
 	cmdFlags = append(cmdFlags, "--profile="+shared.BazelMetricsFilename(paths, runName))
 
 	// Set default platforms to canonicalized values for mixed builds requests.
@@ -334,20 +333,20 @@
 	// The actual platform values here may be overridden by configuration
 	// transitions from the buildroot.
 	cmdFlags = append(cmdFlags,
-		fmt.Sprintf("--platforms=%s", canonicalizeLabel("//build/bazel/platforms:android_x86_64")))
+		fmt.Sprintf("--platforms=%s", "//build/bazel/platforms:android_x86_64"))
 	cmdFlags = append(cmdFlags,
-		fmt.Sprintf("--extra_toolchains=%s", canonicalizeLabel("//prebuilts/clang/host/linux-x86:all")))
+		fmt.Sprintf("--extra_toolchains=%s", "//prebuilts/clang/host/linux-x86:all"))
 	// This should be parameterized on the host OS, but let's restrict to linux
 	// to keep things simple for now.
 	cmdFlags = append(cmdFlags,
-		fmt.Sprintf("--host_platform=%s", canonicalizeLabel("//build/bazel/platforms:linux_x86_64")))
+		fmt.Sprintf("--host_platform=%s", "//build/bazel/platforms:linux_x86_64"))
 
 	// Explicitly disable downloading rules (such as canonical C++ and Java rules) from the network.
 	cmdFlags = append(cmdFlags, "--experimental_repository_disable_download")
 	cmdFlags = append(cmdFlags, extraFlags...)
 
 	bazelCmd := exec.Command(paths.bazelPath, cmdFlags...)
-	bazelCmd.Dir = paths.workspaceDir
+	bazelCmd.Dir = absolutePath(paths.syntheticWorkspaceDir())
 	bazelCmd.Env = append(os.Environ(), "HOME="+paths.homeDir, pwdPrefix(),
 		// Disables local host detection of gcc; toolchain information is defined
 		// explicitly in BUILD files.
@@ -363,31 +362,6 @@
 	}
 }
 
-// Returns the string contents of a workspace file that should be output
-// adjacent to the main bzl file and build file.
-// This workspace file allows, via local_repository rule, sourcetree-level
-// BUILD targets to be referenced via @sourceroot.
-func (context *bazelContext) workspaceFileContents() []byte {
-	formatString := `
-# This file is generated by soong_build. Do not edit.
-local_repository(
-    name = "sourceroot",
-    path = "%[1]s",
-)
-
-local_repository(
-    name = "rules_cc",
-    path = "%[1]s/build/bazel/rules_cc",
-)
-
-local_repository(
-    name = "bazel_skylib",
-    path = "%[1]s/build/bazel/bazel_skylib",
-)
-`
-	return []byte(fmt.Sprintf(formatString, context.paths.workspaceDir))
-}
-
 func (context *bazelContext) mainBzlFileContents() []byte {
 	// TODO(cparsons): Define configuration transitions programmatically based
 	// on available archs.
@@ -398,7 +372,7 @@
 
 def _config_node_transition_impl(settings, attr):
     return {
-        "//command_line_option:platforms": "@sourceroot//build/bazel/platforms:android_%s" % attr.arch,
+        "//command_line_option:platforms": "@//build/bazel/platforms:android_%s" % attr.arch,
     }
 
 _config_node_transition = transition(
@@ -447,18 +421,6 @@
 	return []byte(contents)
 }
 
-// Returns a "canonicalized" corresponding to the given sourcetree-level label.
-// This abstraction is required because a sourcetree label such as //foo/bar:baz
-// must be referenced via the local repository prefix, such as
-// @sourceroot//foo/bar:baz.
-func canonicalizeLabel(label string) string {
-	if strings.HasPrefix(label, "//") {
-		return "@sourceroot" + label
-	} else {
-		return "@sourceroot//" + label
-	}
-}
-
 func (context *bazelContext) mainBuildFileContents() []byte {
 	// TODO(cparsons): Map label to attribute programmatically; don't use hard-coded
 	// architecture mapping.
@@ -487,7 +449,7 @@
 
 	labelsByArch := map[string][]string{}
 	for val, _ := range context.requests {
-		labelString := fmt.Sprintf("\"%s\"", canonicalizeLabel(val.label))
+		labelString := fmt.Sprintf("\"@%s\"", val.label)
 		archString := getArchString(val)
 		labelsByArch[archString] = append(labelsByArch[archString], labelString)
 	}
@@ -593,12 +555,24 @@
 		mainSwitchSection))
 }
 
-// Returns a workspace-relative path containing build-related metadata required
-// for interfacing with Bazel. Example: out/soong/bazel.
+// Returns a path containing build-related metadata required for interfacing
+// with Bazel. Example: out/soong/bazel.
 func (p *bazelPaths) intermediatesDir() string {
 	return filepath.Join(p.buildDir, "bazel")
 }
 
+// Returns the path where the contents of the @soong_injection repository live.
+// It is used by Soong to tell Bazel things it cannot over the command line.
+func (p *bazelPaths) injectedFilesDir() string {
+	return filepath.Join(p.buildDir, "soong_injection")
+}
+
+// Returns the path of the synthetic Bazel workspace that contains a symlink
+// forest composed the whole source tree and BUILD files generated by bp2build.
+func (p *bazelPaths) syntheticWorkspaceDir() string {
+	return filepath.Join(p.buildDir, "workspace")
+}
+
 // Issues commands to Bazel to receive results for all cquery requests
 // queued in the BazelContext.
 func (context *bazelContext) InvokeBazel() error {
@@ -608,47 +582,47 @@
 	var cqueryErr string
 	var err error
 
-	intermediatesDirPath := absolutePath(context.paths.intermediatesDir())
-	if _, err := os.Stat(intermediatesDirPath); os.IsNotExist(err) {
-		err = os.Mkdir(intermediatesDirPath, 0777)
+	soongInjectionPath := absolutePath(context.paths.injectedFilesDir())
+	if _, err := os.Stat(soongInjectionPath); os.IsNotExist(err) {
+		err = os.Mkdir(soongInjectionPath, 0777)
 	}
-
 	if err != nil {
 		return err
 	}
+
+	err = ioutil.WriteFile(filepath.Join(soongInjectionPath, "WORKSPACE.bazel"), []byte{}, 0666)
+	if err != nil {
+		return err
+	}
+
 	err = ioutil.WriteFile(
-		filepath.Join(intermediatesDirPath, "main.bzl"),
+		filepath.Join(soongInjectionPath, "main.bzl"),
 		context.mainBzlFileContents(), 0666)
 	if err != nil {
 		return err
 	}
+
 	err = ioutil.WriteFile(
-		filepath.Join(intermediatesDirPath, "BUILD.bazel"),
+		filepath.Join(soongInjectionPath, "BUILD.bazel"),
 		context.mainBuildFileContents(), 0666)
 	if err != nil {
 		return err
 	}
-	cqueryFileRelpath := filepath.Join(context.paths.intermediatesDir(), "buildroot.cquery")
+	cqueryFileRelpath := filepath.Join(context.paths.injectedFilesDir(), "buildroot.cquery")
 	err = ioutil.WriteFile(
 		absolutePath(cqueryFileRelpath),
 		context.cqueryStarlarkFileContents(), 0666)
 	if err != nil {
 		return err
 	}
-	err = ioutil.WriteFile(
-		filepath.Join(intermediatesDirPath, "WORKSPACE.bazel"),
-		context.workspaceFileContents(), 0666)
-	if err != nil {
-		return err
-	}
-	buildrootLabel := "//:buildroot"
+	buildrootLabel := "@soong_injection//:buildroot"
 	cqueryOutput, cqueryErr, err = context.issueBazelCommand(
 		context.paths,
 		bazel.CqueryBuildRootRunName,
 		bazelCommand{"cquery", fmt.Sprintf("kind(rule, deps(%s))", buildrootLabel)},
 		"--output=starlark",
-		"--starlark:file="+cqueryFileRelpath)
-	err = ioutil.WriteFile(filepath.Join(intermediatesDirPath, "cquery.out"),
+		"--starlark:file="+absolutePath(cqueryFileRelpath))
+	err = ioutil.WriteFile(filepath.Join(soongInjectionPath, "cquery.out"),
 		[]byte(cqueryOutput), 0666)
 	if err != nil {
 		return err
@@ -702,7 +676,7 @@
 	_, _, err = context.issueBazelCommand(
 		context.paths,
 		bazel.BazelBuildPhonyRootRunName,
-		bazelCommand{"build", "//:phonyroot"})
+		bazelCommand{"build", "@soong_injection//:phonyroot"})
 
 	if err != nil {
 		return err
@@ -781,7 +755,7 @@
 }
 
 func getCqueryId(key cqueryKey) string {
-	return canonicalizeLabel(key.label) + "|" + getArchString(key)
+	return key.label + "|" + getArchString(key)
 }
 
 func getArchString(key cqueryKey) string {
diff --git a/android/bazel_paths.go b/android/bazel_paths.go
index 13f4949..9727cc7 100644
--- a/android/bazel_paths.go
+++ b/android/bazel_paths.go
@@ -91,7 +91,7 @@
 		}
 		if m, t := SrcIsModuleWithTag(module); m != "" {
 			l := getOtherModuleLabel(ctx, m, t)
-			l.Bp_text = bpText
+			l.OriginalModuleName = bpText
 			labels.Includes = append(labels.Includes, l)
 		} else {
 			ctx.ModuleErrorf("%q, is not a module reference", module)
@@ -156,8 +156,8 @@
 func transformSubpackagePath(ctx BazelConversionPathContext, path bazel.Label) bazel.Label {
 	var newPath bazel.Label
 
-	// Don't transform Bp_text
-	newPath.Bp_text = path.Bp_text
+	// Don't transform OriginalModuleName
+	newPath.OriginalModuleName = path.OriginalModuleName
 
 	if strings.HasPrefix(path.Label, "//") {
 		// Assume absolute labels are already correct (e.g. //path/to/some/package:foo.h)
@@ -247,7 +247,7 @@
 		if m, tag := SrcIsModuleWithTag(p); m != "" {
 			l := getOtherModuleLabel(ctx, m, tag)
 			if !InList(l.Label, expandedExcludes) {
-				l.Bp_text = fmt.Sprintf(":%s", m)
+				l.OriginalModuleName = fmt.Sprintf(":%s", m)
 				labels.Includes = append(labels.Includes, l)
 			}
 		} else {
diff --git a/android/filegroup.go b/android/filegroup.go
index 2f13ab8..fc6850e 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -105,9 +105,34 @@
 	return module
 }
 
-func (fg *fileGroup) GenerateAndroidBuildActions(ctx ModuleContext) {
-	fg.srcs = PathsForModuleSrcExcludes(ctx, fg.properties.Srcs, fg.properties.Exclude_srcs)
+func (fg *fileGroup) generateBazelBuildActions(ctx ModuleContext) bool {
+	if !fg.MixedBuildsEnabled(ctx) {
+		return false
+	}
 
+	bazelCtx := ctx.Config().BazelContext
+	filePaths, ok := bazelCtx.GetOutputFiles(fg.GetBazelLabel(ctx, fg), ctx.Arch().ArchType)
+	if !ok {
+		return false
+	}
+
+	bazelOuts := make(Paths, 0, len(filePaths))
+	for _, p := range filePaths {
+		src := PathForBazelOut(ctx, p)
+		bazelOuts = append(bazelOuts, src)
+	}
+
+	fg.srcs = bazelOuts
+
+	return true
+}
+
+func (fg *fileGroup) GenerateAndroidBuildActions(ctx ModuleContext) {
+	if fg.generateBazelBuildActions(ctx) {
+		return
+	}
+
+	fg.srcs = PathsForModuleSrcExcludes(ctx, fg.properties.Srcs, fg.properties.Exclude_srcs)
 	if fg.properties.Path != nil {
 		fg.srcs = PathsWithModuleSrcSubDir(ctx, fg.srcs, String(fg.properties.Path))
 	}
diff --git a/apex/apex.go b/apex/apex.go
index f5e6fa9..6f02c47 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -92,12 +92,6 @@
 
 	Multilib apexMultilibProperties
 
-	// List of boot images that are embedded inside this APEX bundle.
-	//
-	// deprecated: Use Bootclasspath_fragments
-	// TODO(b/177892522): Remove after has been replaced by Bootclasspath_fragments
-	Boot_images []string
-
 	// List of bootclasspath fragments that are embedded inside this APEX bundle.
 	Bootclasspath_fragments []string
 
@@ -573,7 +567,7 @@
 	certificateTag  = dependencyTag{name: "certificate"}
 	executableTag   = dependencyTag{name: "executable", payload: true}
 	fsTag           = dependencyTag{name: "filesystem", payload: true}
-	bootImageTag    = dependencyTag{name: "bootImage", payload: true, sourceOnly: true}
+	bcpfTag         = dependencyTag{name: "bootclasspathFragment", payload: true, sourceOnly: true}
 	compatConfigTag = dependencyTag{name: "compatConfig", payload: true, sourceOnly: true}
 	javaLibTag      = dependencyTag{name: "javaLib", payload: true}
 	jniLibTag       = dependencyTag{name: "jniLib", payload: true}
@@ -753,8 +747,7 @@
 
 	// Common-arch dependencies come next
 	commonVariation := ctx.Config().AndroidCommonTarget.Variations()
-	ctx.AddFarVariationDependencies(commonVariation, bootImageTag, a.properties.Boot_images...)
-	ctx.AddFarVariationDependencies(commonVariation, bootImageTag, a.properties.Bootclasspath_fragments...)
+	ctx.AddFarVariationDependencies(commonVariation, bcpfTag, a.properties.Bootclasspath_fragments...)
 	ctx.AddFarVariationDependencies(commonVariation, javaLibTag, a.properties.Java_libs...)
 	ctx.AddFarVariationDependencies(commonVariation, bpfTag, a.properties.Bpfs...)
 	ctx.AddFarVariationDependencies(commonVariation, fsTag, a.properties.Filesystems...)
@@ -1700,10 +1693,10 @@
 				} else {
 					ctx.PropertyErrorf("binaries", "%q is neither cc_binary, rust_binary, (embedded) py_binary, (host) blueprint_go_binary, (host) bootstrap_go_binary, nor sh_binary", depName)
 				}
-			case bootImageTag:
+			case bcpfTag:
 				{
 					if _, ok := child.(*java.BootImageModule); !ok {
-						ctx.PropertyErrorf("boot_images", "%q is not a boot_image module", depName)
+						ctx.PropertyErrorf("bootclasspath_fragments", "%q is not a boot_image module", depName)
 						return false
 					}
 					bootImageInfo := ctx.OtherModuleProvider(child, java.BootImageInfoProvider).(java.BootImageInfo)
@@ -1711,7 +1704,7 @@
 						dirInApex := filepath.Join("javalib", arch.String())
 						for _, f := range files {
 							androidMkModuleName := "javalib_" + arch.String() + "_" + filepath.Base(f.String())
-							// TODO(b/177892522) - consider passing in the boot image module here instead of nil
+							// TODO(b/177892522) - consider passing in the bootclasspath fragment module here instead of nil
 							af := newApexFile(ctx, f, androidMkModuleName, dirInApex, etc, nil)
 							filesInfo = append(filesInfo, af)
 						}
@@ -1932,18 +1925,18 @@
 					// dependencies. Track them.
 					return true
 				} else if java.IsbootImageContentDepTag(depTag) {
-					// Add the contents of the boot image to the apex.
+					// Add the contents of the bootclasspath fragment to the apex.
 					switch child.(type) {
 					case *java.Library, *java.SdkLibrary:
 						af := apexFileForJavaModule(ctx, child.(javaModule))
 						if !af.ok() {
-							ctx.PropertyErrorf("boot_images", "boot image content %q is not configured to be compiled into dex", depName)
+							ctx.PropertyErrorf("bootclasspath_fragments", "bootclasspath_fragment content %q is not configured to be compiled into dex", depName)
 							return false
 						}
 						filesInfo = append(filesInfo, af)
 						return true // track transitive dependencies
 					default:
-						ctx.PropertyErrorf("boot_images", "boot image content %q of type %q is not supported", depName, ctx.OtherModuleType(child))
+						ctx.PropertyErrorf("bootclasspath_fragments", "bootclasspath_fragment content %q of type %q is not supported", depName, ctx.OtherModuleType(child))
 					}
 
 				} else if _, ok := depTag.(android.CopyDirectlyInAnyApexTag); ok {
diff --git a/apex/boot_image_test.go b/apex/boot_image_test.go
index d447d70..e18c2ea 100644
--- a/apex/boot_image_test.go
+++ b/apex/boot_image_test.go
@@ -25,7 +25,7 @@
 // Contains tests for boot_image logic from java/boot_image.go as the ART boot image requires
 // modules from the ART apex.
 
-var prepareForTestWithBootImage = android.GroupFixturePreparers(
+var prepareForTestWithBootclasspathFragment = android.GroupFixturePreparers(
 	java.PrepareForTestWithDexpreopt,
 	PrepareForTestWithApexBuildComponents,
 )
@@ -37,9 +37,9 @@
 	"system/sepolicy/apex/com.android.art-file_contexts": nil,
 })
 
-func TestBootImages(t *testing.T) {
+func TestBootclasspathFragments(t *testing.T) {
 	result := android.GroupFixturePreparers(
-		prepareForTestWithBootImage,
+		prepareForTestWithBootclasspathFragment,
 		// Configure some libraries in the art and framework boot images.
 		java.FixtureConfigureBootJars("com.android.art:baz", "com.android.art:quuz", "platform:foo", "platform:bar"),
 		prepareForTestWithArtApex,
@@ -90,23 +90,23 @@
 			srcs: ["b.java"],
 		}
 
-		boot_image {
-			name: "art-boot-image",
+		bootclasspath_fragment {
+			name: "art-bootclasspath-fragment",
 			image_name: "art",
 			apex_available: [
 				"com.android.art",
 			],
 		}
 
-		boot_image {
-			name: "framework-boot-image",
+		bootclasspath_fragment {
+			name: "framework-bootclasspath-fragment",
 			image_name: "boot",
 		}
 `,
 	)
 
-	// Make sure that the framework-boot-image is using the correct configuration.
-	checkBootImage(t, result, "framework-boot-image", "platform:foo,platform:bar", `
+	// Make sure that the framework-bootclasspath-fragment is using the correct configuration.
+	checkBootclasspathFragment(t, result, "framework-bootclasspath-fragment", "platform:foo,platform:bar", `
 test_device/dex_bootjars/android/system/framework/arm/boot-foo.art
 test_device/dex_bootjars/android/system/framework/arm/boot-foo.oat
 test_device/dex_bootjars/android/system/framework/arm/boot-foo.vdex
@@ -121,8 +121,8 @@
 test_device/dex_bootjars/android/system/framework/arm64/boot-bar.vdex
 `)
 
-	// Make sure that the art-boot-image is using the correct configuration.
-	checkBootImage(t, result, "art-boot-image", "com.android.art:baz,com.android.art:quuz", `
+	// Make sure that the art-bootclasspath-fragment is using the correct configuration.
+	checkBootclasspathFragment(t, result, "art-bootclasspath-fragment", "com.android.art:baz,com.android.art:quuz", `
 test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art
 test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat
 test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex
@@ -138,7 +138,7 @@
 `)
 }
 
-func checkBootImage(t *testing.T, result *android.TestResult, moduleName string, expectedConfiguredModules string, expectedBootImageFiles string) {
+func checkBootclasspathFragment(t *testing.T, result *android.TestResult, moduleName string, expectedConfiguredModules string, expectedBootclasspathFragmentFiles string) {
 	t.Helper()
 
 	bootImage := result.ModuleForTests(moduleName, "android_common").Module().(*java.BootImageModule)
@@ -158,12 +158,12 @@
 		}
 	}
 
-	android.AssertTrimmedStringEquals(t, "invalid paths for "+moduleName, expectedBootImageFiles, strings.Join(allPaths, "\n"))
+	android.AssertTrimmedStringEquals(t, "invalid paths for "+moduleName, expectedBootclasspathFragmentFiles, strings.Join(allPaths, "\n"))
 }
 
-func TestBootImageInArtApex(t *testing.T) {
+func TestBootclasspathFragmentInArtApex(t *testing.T) {
 	result := android.GroupFixturePreparers(
-		prepareForTestWithBootImage,
+		prepareForTestWithBootclasspathFragment,
 		prepareForTestWithArtApex,
 
 		// Configure some libraries in the art boot image.
@@ -172,11 +172,11 @@
 		apex {
 			name: "com.android.art",
 			key: "com.android.art.key",
-			boot_images: [
-				"mybootimage",
+			bootclasspath_fragments: [
+				"mybootclasspathfragment",
 			],
 			// bar (like foo) should be transitively included in this apex because it is part of the
-			// mybootimage boot_image. However, it is kept here to ensure that the apex dedups the files
+			// mybootclasspathfragment boot_image. However, it is kept here to ensure that the apex dedups the files
 			// correctly.
 			java_libs: [
 				"bar",
@@ -209,7 +209,7 @@
 		}
 
 		boot_image {
-			name: "mybootimage",
+			name: "mybootclasspathfragment",
 			image_name: "art",
 			apex_available: [
 				"com.android.art",
@@ -218,7 +218,7 @@
 
 		// Make sure that a preferred prebuilt doesn't affect the apex.
 		prebuilt_boot_image {
-			name: "mybootimage",
+			name: "mybootclasspathfragment",
 			image_name: "art",
 			prefer: true,
 			apex_available: [
@@ -247,13 +247,13 @@
 	java.CheckModuleDependencies(t, result.TestContext, "com.android.art", "android_common_com.android.art_image", []string{
 		`bar`,
 		`com.android.art.key`,
-		`mybootimage`,
+		`mybootclasspathfragment`,
 	})
 }
 
-func TestBootImageInPrebuiltArtApex(t *testing.T) {
+func TestBootclasspathFragmentInPrebuiltArtApex(t *testing.T) {
 	result := android.GroupFixturePreparers(
-		prepareForTestWithBootImage,
+		prepareForTestWithBootclasspathFragment,
 		prepareForTestWithArtApex,
 
 		android.FixtureMergeMockFs(android.MockFS{
@@ -294,7 +294,7 @@
 		}
 
 		prebuilt_boot_image {
-			name: "mybootimage",
+			name: "mybootclasspathfragment",
 			image_name: "art",
 			apex_available: [
 				"com.android.art",
@@ -308,23 +308,23 @@
 		`prebuilt_foo`,
 	})
 
-	java.CheckModuleDependencies(t, result.TestContext, "mybootimage", "android_common", []string{
+	java.CheckModuleDependencies(t, result.TestContext, "mybootclasspathfragment", "android_common", []string{
 		`dex2oatd`,
 		`prebuilt_bar`,
 		`prebuilt_foo`,
 	})
 }
 
-func TestBootImageContentsNoName(t *testing.T) {
+func TestBootclasspathFragmentContentsNoName(t *testing.T) {
 	result := android.GroupFixturePreparers(
-		prepareForTestWithBootImage,
+		prepareForTestWithBootclasspathFragment,
 		prepareForTestWithMyapex,
 	).RunTestWithBp(t, `
 		apex {
 			name: "myapex",
 			key: "myapex.key",
-			boot_images: [
-				"mybootimage",
+			bootclasspath_fragments: [
+				"mybootclasspathfragment",
 			],
 			updatable: false,
 		}
@@ -354,7 +354,7 @@
 		}
 
 		boot_image {
-			name: "mybootimage",
+			name: "mybootclasspathfragment",
 			contents: [
 				"foo",
 				"bar",
@@ -374,7 +374,7 @@
 
 	java.CheckModuleDependencies(t, result.TestContext, "myapex", "android_common_myapex_image", []string{
 		`myapex.key`,
-		`mybootimage`,
+		`mybootclasspathfragment`,
 	})
 }
 
diff --git a/bazel/properties.go b/bazel/properties.go
index 4bb2391..5d3299b 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -35,11 +35,27 @@
 
 var productVariableSubstitutionPattern = regexp.MustCompile("%(d|s)")
 
-// Label is used to represent a Bazel compatible Label. Also stores the original bp text to support
-// string replacement.
+// Label is used to represent a Bazel compatible Label. Also stores the original
+// bp text to support string replacement.
 type Label struct {
-	Bp_text string
-	Label   string
+	// The string representation of a Bazel target label. This can be a relative
+	// or fully qualified label. These labels are used for generating BUILD
+	// files with bp2build.
+	Label string
+
+	// The original Soong/Blueprint module name that the label was derived from.
+	// This is used for replacing references to the original name with the new
+	// label, for example in genrule cmds.
+	//
+	// While there is a reversible 1:1 mapping from the module name to Bazel
+	// label with bp2build that could make computing the original module name
+	// from the label automatic, it is not the case for handcrafted targets,
+	// where modules can have a custom label mapping through the { bazel_module:
+	// { label: <label> } } property.
+	//
+	// With handcrafted labels, those modules don't go through bp2build
+	// conversion, but relies on handcrafted targets in the source tree.
+	OriginalModuleName string
 }
 
 // LabelList is used to represent a list of Bazel labels.
diff --git a/cc/builder.go b/cc/builder.go
index da8501c..ad7e1e6 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -968,7 +968,7 @@
 func transformBinaryPrefixSymbols(ctx android.ModuleContext, prefix string, inputFile android.Path,
 	flags builderFlags, outputFile android.WritablePath) {
 
-	objcopyCmd := gccCmd(flags.toolchain, "objcopy")
+	objcopyCmd := "${config.ClangBin}/llvm-objcopy"
 
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        prefixSymbols,
diff --git a/cc/stub_library.go b/cc/stub_library.go
index 76d236c..81c8be7 100644
--- a/cc/stub_library.go
+++ b/cc/stub_library.go
@@ -30,7 +30,7 @@
 }
 
 // Check if the module defines stub, or itself is stub
-func isStubTarget(m *Module) bool {
+func IsStubTarget(m *Module) bool {
 	if m.IsStubs() || m.HasStubsVariants() {
 		return true
 	}
@@ -61,7 +61,7 @@
 	// Visit all generated soong modules and store stub library file names.
 	ctx.VisitAllModules(func(module android.Module) {
 		if m, ok := module.(*Module); ok {
-			if isStubTarget(m) {
+			if IsStubTarget(m) {
 				if name := getInstalledFileName(m); name != "" {
 					s.stubLibraryMap[name] = true
 				}
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index 5bccf58..044689e 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -25,6 +25,7 @@
 
 	"android/soong/bp2build"
 	"android/soong/shared"
+
 	"github.com/google/blueprint/bootstrap"
 	"github.com/google/blueprint/deptools"
 
@@ -174,7 +175,7 @@
 }
 
 func doChosenActivity(configuration android.Config, extraNinjaDeps []string) string {
-	bazelConversionRequested := configuration.IsEnvTrue("GENERATE_BAZEL_FILES") || bp2buildMarker != ""
+	bazelConversionRequested := bp2buildMarker != ""
 	mixedModeBuild := configuration.BazelContext.BazelEnabled()
 	generateQueryView := bazelQueryViewDir != ""
 	jsonModuleFile := configuration.Getenv("SOONG_DUMP_JSON_MODULE_GRAPH")
@@ -392,9 +393,7 @@
 	ninjaDeps := bootstrap.RunBlueprint(blueprintArgs, bp2buildCtx.Context, configuration)
 	ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
 
-	for _, globPath := range bp2buildCtx.Globs() {
-		ninjaDeps = append(ninjaDeps, globPath.FileListFile(configuration.BuildDir()))
-	}
+	ninjaDeps = append(ninjaDeps, bootstrap.GlobFileListFiles(configuration)...)
 
 	// Run the code-generation phase to convert BazelTargetModules to BUILD files
 	// and print conversion metrics to the user.
diff --git a/filesystem/Android.bp b/filesystem/Android.bp
index 3cdaa64..38684d3 100644
--- a/filesystem/Android.bp
+++ b/filesystem/Android.bp
@@ -9,11 +9,13 @@
         "blueprint",
         "soong",
         "soong-android",
+        "soong-linkerconfig",
     ],
     srcs: [
         "bootimg.go",
         "filesystem.go",
         "logical_partition.go",
+        "system_image.go",
         "vbmeta.go",
         "testing.go",
     ],
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index cf98717..b2caa51 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -31,6 +31,7 @@
 
 func registerBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("android_filesystem", filesystemFactory)
+	ctx.RegisterModuleType("android_system_image", systemImageFactory)
 }
 
 type filesystem struct {
@@ -39,6 +40,9 @@
 
 	properties filesystemProperties
 
+	// Function that builds extra files under the root directory and returns the files
+	buildExtraFiles func(ctx android.ModuleContext, root android.OutputPath) android.OutputPaths
+
 	output     android.OutputPath
 	installDir android.InstallPath
 }
@@ -87,10 +91,14 @@
 // partitions like system.img. For example, cc_library modules are placed under ./lib[64] directory.
 func filesystemFactory() android.Module {
 	module := &filesystem{}
+	initFilesystemModule(module)
+	return module
+}
+
+func initFilesystemModule(module *filesystem) {
 	module.AddProperties(&module.properties)
 	android.InitPackageModule(module)
 	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
-	return module
 }
 
 var dependencyTag = struct {
@@ -148,7 +156,7 @@
 	ctx.InstallFile(f.installDir, f.installFileName(), f.output)
 }
 
-// root zip will contain stuffs like dirs or symlinks.
+// root zip will contain extra files/dirs that are not from the `deps` property.
 func (f *filesystem) buildRootZip(ctx android.ModuleContext) android.OutputPath {
 	rootDir := android.PathForModuleGen(ctx, "root").OutputPath
 	builder := android.NewRuleBuilder(pctx, ctx)
@@ -182,15 +190,34 @@
 		builder.Command().Text("ln -sf").Text(proptools.ShellEscape(target)).Text(dst.String())
 	}
 
-	zipOut := android.PathForModuleGen(ctx, "root.zip").OutputPath
+	// create extra files if there's any
+	rootForExtraFiles := android.PathForModuleGen(ctx, "root-extra").OutputPath
+	var extraFiles android.OutputPaths
+	if f.buildExtraFiles != nil {
+		extraFiles = f.buildExtraFiles(ctx, rootForExtraFiles)
+		for _, f := range extraFiles {
+			rel, _ := filepath.Rel(rootForExtraFiles.String(), f.String())
+			if strings.HasPrefix(rel, "..") {
+				panic(fmt.Errorf("%q is not under %q\n", f, rootForExtraFiles))
+			}
+		}
+	}
 
-	builder.Command().
-		BuiltTool("soong_zip").
-		FlagWithOutput("-o ", zipOut).
+	// Zip them all
+	zipOut := android.PathForModuleGen(ctx, "root.zip").OutputPath
+	zipCommand := builder.Command().BuiltTool("soong_zip")
+	zipCommand.FlagWithOutput("-o ", zipOut).
 		FlagWithArg("-C ", rootDir.String()).
 		Flag("-L 0"). // no compression because this will be unzipped soon
 		FlagWithArg("-D ", rootDir.String()).
 		Flag("-d") // include empty directories
+	if len(extraFiles) > 0 {
+		zipCommand.FlagWithArg("-C ", rootForExtraFiles.String())
+		for _, f := range extraFiles {
+			zipCommand.FlagWithInput("-f ", f)
+		}
+	}
+
 	builder.Command().Text("rm -rf").Text(rootDir.String())
 
 	builder.Build("zip_root", fmt.Sprintf("zipping root contents for %s", ctx.ModuleName()))
diff --git a/filesystem/filesystem_test.go b/filesystem/filesystem_test.go
index 880b177..e78fdff 100644
--- a/filesystem/filesystem_test.go
+++ b/filesystem/filesystem_test.go
@@ -19,6 +19,7 @@
 	"testing"
 
 	"android/soong/android"
+	"android/soong/cc"
 )
 
 func TestMain(m *testing.M) {
@@ -27,6 +28,7 @@
 
 var fixture = android.GroupFixturePreparers(
 	android.PrepareForIntegrationTestWithAndroid,
+	cc.PrepareForIntegrationTestWithCc,
 	PrepareForTestWithFilesystemBuildComponents,
 )
 
@@ -40,3 +42,35 @@
 	// produces "myfilesystem.img"
 	result.ModuleForTests("myfilesystem", "android_common").Output("myfilesystem.img")
 }
+
+func TestFileSystemFillsLinkerConfigWithStubLibs(t *testing.T) {
+	result := fixture.RunTestWithBp(t, `
+	        android_system_image {
+			name: "myfilesystem",
+			deps: [
+				"libfoo",
+                                "libbar",
+			],
+			linker_config_src: "linker.config.json",
+		}
+
+		cc_library {
+			name: "libfoo",
+			stubs: {
+				symbol_file: "libfoo.map.txt",
+			},
+		}
+
+		cc_library {
+			name: "libbar",
+		}
+	`)
+
+	module := result.ModuleForTests("myfilesystem", "android_common")
+	output := module.Output("system/etc/linker.config.pb")
+
+	android.AssertStringDoesContain(t, "linker.config.pb should have libfoo",
+		output.RuleParams.Command, "libfoo.so")
+	android.AssertStringDoesNotContain(t, "linker.config.pb should not have libbar",
+		output.RuleParams.Command, "libbar.so")
+}
diff --git a/filesystem/system_image.go b/filesystem/system_image.go
new file mode 100644
index 0000000..a7c9143
--- /dev/null
+++ b/filesystem/system_image.go
@@ -0,0 +1,68 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filesystem
+
+import (
+	"android/soong/android"
+	"android/soong/linkerconfig"
+)
+
+type systemImage struct {
+	filesystem
+
+	properties systemImageProperties
+}
+
+type systemImageProperties struct {
+	// Path to the input linker config json file.
+	Linker_config_src *string
+}
+
+// android_system_image is a specialization of android_filesystem for the 'system' partition.
+// Currently, the only difference is the inclusion of linker.config.pb file which specifies
+// the provided and the required libraries to and from APEXes.
+func systemImageFactory() android.Module {
+	module := &systemImage{}
+	module.AddProperties(&module.properties)
+	module.filesystem.buildExtraFiles = module.buildExtraFiles
+	initFilesystemModule(&module.filesystem)
+	return module
+}
+
+func (s *systemImage) buildExtraFiles(ctx android.ModuleContext, root android.OutputPath) android.OutputPaths {
+	lc := s.buildLinkerConfigFile(ctx, root)
+	// Add more files if needed
+	return []android.OutputPath{lc}
+}
+
+func (s *systemImage) buildLinkerConfigFile(ctx android.ModuleContext, root android.OutputPath) android.OutputPath {
+	input := android.PathForModuleSrc(ctx, android.String(s.properties.Linker_config_src))
+	output := root.Join(ctx, "system", "etc", "linker.config.pb")
+	var otherModules []android.Module
+	ctx.WalkDeps(func(child, parent android.Module) bool {
+		// Don't track direct dependencies that aren't not packaged
+		if parent == s {
+			if pi, ok := ctx.OtherModuleDependencyTag(child).(android.PackagingItem); !ok || !pi.IsPackagingItem() {
+				return false
+			}
+		}
+		otherModules = append(otherModules, child)
+		return true
+	})
+	builder := android.NewRuleBuilder(pctx, ctx)
+	linkerconfig.BuildLinkerConfig(ctx, builder, input, otherModules, output)
+	builder.Build("conv_linker_config", "Generate linker config protobuf "+output.String())
+	return output
+}
diff --git a/genrule/genrule.go b/genrule/genrule.go
index 3a9aecc..77dae75 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -856,8 +856,8 @@
 			cmd = strings.Replace(cmd, "$(locations)", fmt.Sprintf("$(locations %s)", tools.Value.Includes[0].Label), -1)
 		}
 		for _, l := range allReplacements.Includes {
-			bpLoc := fmt.Sprintf("$(location %s)", l.Bp_text)
-			bpLocs := fmt.Sprintf("$(locations %s)", l.Bp_text)
+			bpLoc := fmt.Sprintf("$(location %s)", l.OriginalModuleName)
+			bpLocs := fmt.Sprintf("$(locations %s)", l.OriginalModuleName)
 			bazelLoc := fmt.Sprintf("$(location %s)", l.Label)
 			bazelLocs := fmt.Sprintf("$(locations %s)", l.Label)
 			cmd = strings.Replace(cmd, bpLoc, bazelLoc, -1)
diff --git a/java/lint.go b/java/lint.go
index aa308e6..a77daa8 100644
--- a/java/lint.go
+++ b/java/lint.go
@@ -200,7 +200,7 @@
 	srcJarList := zipSyncCmd(ctx, rule, srcJarDir, l.srcJars)
 
 	cmd := rule.Command().
-		BuiltTool("lint-project-xml").
+		BuiltTool("lint_project_xml").
 		FlagWithOutput("--project_out ", projectXMLPath).
 		FlagWithOutput("--config_out ", configXMLPath).
 		FlagWithArg("--name ", ctx.ModuleName())
@@ -279,6 +279,19 @@
 	return manifestPath
 }
 
+func (l *linter) getBaselineFilepath(ctx android.ModuleContext) android.OptionalPath {
+	var lintBaseline android.OptionalPath
+	if lintFilename := proptools.StringDefault(l.properties.Lint.Baseline_filename, "lint-baseline.xml"); lintFilename != "" {
+		if String(l.properties.Lint.Baseline_filename) != "" {
+			// if manually specified, we require the file to exist
+			lintBaseline = android.OptionalPathForPath(android.PathForModuleSrc(ctx, lintFilename))
+		} else {
+			lintBaseline = android.ExistentPathForSource(ctx, ctx.ModuleDir(), lintFilename)
+		}
+	}
+	return lintBaseline
+}
+
 func (l *linter) lint(ctx android.ModuleContext) {
 	if !l.enabled() {
 		return
@@ -381,17 +394,9 @@
 		cmd.FlagWithArg("--check ", checkOnly)
 	}
 
-	if lintFilename := proptools.StringDefault(l.properties.Lint.Baseline_filename, "lint-baseline.xml"); lintFilename != "" {
-		var lintBaseline android.OptionalPath
-		if String(l.properties.Lint.Baseline_filename) != "" {
-			// if manually specified, we require the file to exist
-			lintBaseline = android.OptionalPathForPath(android.PathForModuleSrc(ctx, lintFilename))
-		} else {
-			lintBaseline = android.ExistentPathForSource(ctx, ctx.ModuleDir(), lintFilename)
-		}
-		if lintBaseline.Valid() {
-			cmd.FlagWithInput("--baseline ", lintBaseline.Path())
-		}
+	lintBaseline := l.getBaselineFilepath(ctx)
+	if lintBaseline.Valid() {
+		cmd.FlagWithInput("--baseline ", lintBaseline.Path())
 	}
 
 	cmd.Text("|| (").Text("if [ -e").Input(text).Text("]; then cat").Input(text).Text("; fi; exit 7)")
diff --git a/linkerconfig/Android.bp b/linkerconfig/Android.bp
index 9161f0e..76a6325 100644
--- a/linkerconfig/Android.bp
+++ b/linkerconfig/Android.bp
@@ -9,6 +9,7 @@
         "blueprint",
         "soong",
         "soong-android",
+        "soong-cc",
         "soong-etc",
     ],
     srcs: [
diff --git a/linkerconfig/linkerconfig.go b/linkerconfig/linkerconfig.go
index 241cac6..8d0ad7c 100644
--- a/linkerconfig/linkerconfig.go
+++ b/linkerconfig/linkerconfig.go
@@ -15,11 +15,15 @@
 package linkerconfig
 
 import (
-	"android/soong/android"
-	"android/soong/etc"
 	"fmt"
+	"sort"
+	"strings"
 
 	"github.com/google/blueprint/proptools"
+
+	"android/soong/android"
+	"android/soong/cc"
+	"android/soong/etc"
 )
 
 var (
@@ -81,24 +85,59 @@
 }
 
 func (l *linkerConfig) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	inputFile := android.PathForModuleSrc(ctx, android.String(l.properties.Src))
-	l.outputFilePath = android.PathForModuleOut(ctx, "linker.config.pb").OutputPath
-	l.installDirPath = android.PathForModuleInstall(ctx, "etc")
-	linkerConfigRule := android.NewRuleBuilder(pctx, ctx)
-	linkerConfigRule.Command().
-		BuiltTool("conv_linker_config").
-		Flag("proto").
-		FlagWithInput("-s ", inputFile).
-		FlagWithOutput("-o ", l.outputFilePath)
-	linkerConfigRule.Build("conv_linker_config",
-		"Generate linker config protobuf "+l.outputFilePath.String())
+	input := android.PathForModuleSrc(ctx, android.String(l.properties.Src))
+	output := android.PathForModuleOut(ctx, "linker.config.pb").OutputPath
 
+	builder := android.NewRuleBuilder(pctx, ctx)
+	BuildLinkerConfig(ctx, builder, input, nil, output)
+	builder.Build("conv_linker_config", "Generate linker config protobuf "+output.String())
+
+	l.outputFilePath = output
+	l.installDirPath = android.PathForModuleInstall(ctx, "etc")
 	if !proptools.BoolDefault(l.properties.Installable, true) {
 		l.SkipInstall()
 	}
 	ctx.InstallFile(l.installDirPath, l.outputFilePath.Base(), l.outputFilePath)
 }
 
+func BuildLinkerConfig(ctx android.ModuleContext, builder *android.RuleBuilder,
+	input android.Path, otherModules []android.Module, output android.OutputPath) {
+
+	// First, convert the input json to protobuf format
+	interimOutput := android.PathForModuleOut(ctx, "temp.pb")
+	builder.Command().
+		BuiltTool("conv_linker_config").
+		Flag("proto").
+		FlagWithInput("-s ", input).
+		FlagWithOutput("-o ", interimOutput)
+
+	// Secondly, if there's provideLibs gathered from otherModules, append them
+	var provideLibs []string
+	for _, m := range otherModules {
+		if c, ok := m.(*cc.Module); ok && cc.IsStubTarget(c) {
+			for _, ps := range c.PackagingSpecs() {
+				provideLibs = append(provideLibs, ps.FileName())
+			}
+		}
+	}
+	provideLibs = android.FirstUniqueStrings(provideLibs)
+	sort.Strings(provideLibs)
+	if len(provideLibs) > 0 {
+		builder.Command().
+			BuiltTool("conv_linker_config").
+			Flag("append").
+			FlagWithInput("-s ", interimOutput).
+			FlagWithOutput("-o ", output).
+			FlagWithArg("--key ", "provideLibs").
+			FlagWithArg("--value ", proptools.ShellEscapeIncludingSpaces(strings.Join(provideLibs, " ")))
+	} else {
+		// If nothing to add, just cp to the final output
+		builder.Command().Text("cp").Input(interimOutput).Output(output)
+	}
+	builder.Temporary(interimOutput)
+	builder.DeleteTemporaryFiles()
+}
+
 // linker_config generates protobuf file from json file. This protobuf file will be used from
 // linkerconfig while generating ld.config.txt. Format of this file can be found from
 // https://android.googlesource.com/platform/system/linkerconfig/+/master/README.md
diff --git a/python/tests/Android.bp b/python/tests/Android.bp
index 0e8eef6..a656859 100644
--- a/python/tests/Android.bp
+++ b/python/tests/Android.bp
@@ -23,7 +23,10 @@
         "par_test.py",
         "testpkg/par_test.py",
     ],
-
+    // Is not implemented as a python unittest
+    test_options: {
+        unit_test: false,
+    },
     version: {
         py2: {
             enabled: true,
@@ -43,7 +46,10 @@
         "par_test.py",
         "testpkg/par_test.py",
     ],
-
+    // Is not implemented as a python unittest
+    test_options: {
+        unit_test: false,
+    },
     version: {
         py3: {
             embedded_launcher: true,
diff --git a/scripts/Android.bp b/scripts/Android.bp
index c54b2bc..b0a8669 100644
--- a/scripts/Android.bp
+++ b/scripts/Android.bp
@@ -219,14 +219,25 @@
 }
 
 python_binary_host {
-    name: "lint-project-xml",
-    main: "lint-project-xml.py",
+    name: "lint_project_xml",
+    main: "lint_project_xml.py",
     srcs: [
-        "lint-project-xml.py",
+        "lint_project_xml.py",
     ],
     libs: ["ninja_rsp"],
 }
 
+python_test_host {
+    name: "lint_project_xml_test",
+    main: "lint_project_xml_test.py",
+    srcs: [
+        "lint_project_xml_test.py",
+        "lint_project_xml.py",
+    ],
+    libs: ["ninja_rsp"],
+    test_suites: ["general-tests"],
+}
+
 python_binary_host {
     name: "gen-kotlin-build-file.py",
     main: "gen-kotlin-build-file.py",
diff --git a/scripts/lint-project-xml.py b/scripts/lint_project_xml.py
similarity index 85%
rename from scripts/lint-project-xml.py
rename to scripts/lint_project_xml.py
index f1ef85d..74aebc1 100755
--- a/scripts/lint-project-xml.py
+++ b/scripts/lint_project_xml.py
@@ -18,6 +18,7 @@
 """This file generates project.xml and lint.xml files used to drive the Android Lint CLI tool."""
 
 import argparse
+from xml.dom import minidom
 
 from ninja_rsp import NinjaRspFileReader
 
@@ -73,6 +74,8 @@
                       help='file containing the module\'s manifest.')
   parser.add_argument('--merged_manifest', dest='merged_manifest',
                       help='file containing merged manifest for the module and its dependencies.')
+  parser.add_argument('--baseline', dest='baseline_path',
+                      help='file containing baseline lint issues.')
   parser.add_argument('--library', dest='library', action='store_true',
                       help='mark the module as a library.')
   parser.add_argument('--test', dest='test', action='store_true',
@@ -90,6 +93,8 @@
                      help='treat a lint issue as a warning.')
   group.add_argument('--disable_check', dest='checks', action=check_action('ignore'), default=[],
                      help='disable a lint issue.')
+  group.add_argument('--disallowed_issues', dest='disallowed_issues', default=[],
+                     help='lint issues disallowed in the baseline file')
   return parser.parse_args()
 
 
@@ -134,10 +139,30 @@
   f.write("</lint>\n")
 
 
+def check_baseline_for_disallowed_issues(baseline, forced_checks):
+  issues_element = baseline.documentElement
+  if issues_element.tagName != 'issues':
+    raise RuntimeError('expected issues tag at root')
+  issues = issues_element.getElementsByTagName('issue')
+  disallwed = set()
+  for issue in issues:
+    id = issue.getAttribute('id')
+    if id in forced_checks:
+      disallwed.add(id)
+  return disallwed
+
+
 def main():
   """Program entry point."""
   args = parse_args()
 
+  if args.baseline_path:
+    baseline = minidom.parse(args.baseline_path)
+    diallowed_issues = check_baseline_for_disallowed_issues(baseline, args.disallowed_issues)
+    if bool(diallowed_issues):
+      raise RuntimeError('disallowed issues %s found in lint baseline file %s for module %s'
+                         % (diallowed_issues, args.baseline_path, args.name))
+
   if args.project_out:
     with open(args.project_out, 'w') as f:
       write_project_xml(f, args)
diff --git a/scripts/lint_project_xml_test.py b/scripts/lint_project_xml_test.py
new file mode 100644
index 0000000..344691d
--- /dev/null
+++ b/scripts/lint_project_xml_test.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""Unit tests for lint_project_xml.py."""
+
+import unittest
+from xml.dom import minidom
+
+import lint_project_xml
+
+
+class CheckBaselineForDisallowedIssuesTest(unittest.TestCase):
+  """Unit tests for check_baseline_for_disallowed_issues function."""
+
+  baseline_xml = minidom.parseString(
+      '<?xml version="1.0" encoding="utf-8"?>\n'
+      '<issues format="5" by="lint 4.1.0" client="cli" variant="all" version="4.1.0">\n'
+      '    <issue id="foo" message="foo is evil" errorLine1="foo()">\n'
+      '        <location file="a/b/c.java" line="3" column="10"/>\n'
+      '    </issue>\n'
+      '    <issue id="bar" message="bar is known to be evil" errorLine1="bar()">\n'
+      '        <location file="a/b/c.java" line="5" column="12"/>\n'
+      '    </issue>\n'
+      '    <issue id="baz" message="baz may be evil" errorLine1="a = baz()">\n'
+      '        <location file="a/b/c.java" line="10" column="10"/>\n'
+      '    </issue>\n'
+      '    <issue id="foo" message="foo is evil" errorLine1="b = foo()">\n'
+      '        <location file="a/d/e.java" line="100" column="4"/>\n'
+      '    </issue>\n'
+      '</issues>\n')
+
+  def test_check_baseline_for_disallowed_issues(self):
+    disallowed_issues = lint_project_xml.check_baseline_for_disallowed_issues(self.baseline_xml, ["foo", "bar", "qux"])
+    self.assertEqual({"foo", "bar"}, disallowed_issues)
+
+
+if __name__ == '__main__':
+  unittest.main(verbosity=2)
diff --git a/sdk/update.go b/sdk/update.go
index 522a888..da76fb4 100644
--- a/sdk/update.go
+++ b/sdk/update.go
@@ -103,7 +103,7 @@
 
 	rb.Command().
 		Implicits(implicits).
-		Text("echo").Text(proptools.ShellEscape(content)).
+		Text("echo -n").Text(proptools.ShellEscape(content)).
 		// convert \\n to \n
 		Text("| sed 's/\\\\n/\\n/g' >").Output(gf.path)
 	rb.Command().
diff --git a/tests/bootstrap_test.sh b/tests/bootstrap_test.sh
index e45df06..1a39464 100755
--- a/tests/bootstrap_test.sh
+++ b/tests/bootstrap_test.sh
@@ -140,7 +140,7 @@
   run_soong
   local ninja_mtime1=$(stat -c "%y" out/soong/build.ninja)
 
-  local glob_deps_file=out/soong/.glob/a/__py.glob.d
+  local glob_deps_file=out/soong/.primary/globs/0.d
 
   if [ -e "$glob_deps_file" ]; then
     fail "Glob deps file unexpectedly written on first build"
@@ -482,14 +482,14 @@
   fi
 }
 
-function test_integrated_bp2build_smoke {
+function test_bp2build_smoke {
   setup
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   [[ -e out/soong/.bootstrap/bp2build_workspace_marker ]] || fail "bp2build marker file not created"
   [[ -e out/soong/workspace ]] || fail "Bazel workspace not created"
 }
 
-function test_integrated_bp2build_add_android_bp {
+function test_bp2build_add_android_bp {
   setup
 
   mkdir -p a
@@ -502,7 +502,7 @@
 }
 EOF
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   [[ -e out/soong/bp2build/a/BUILD ]] || fail "a/BUILD not created"
   [[ -L out/soong/workspace/a/BUILD ]] || fail "a/BUILD not symlinked"
 
@@ -516,18 +516,18 @@
 }
 EOF
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   [[ -e out/soong/bp2build/b/BUILD ]] || fail "a/BUILD not created"
   [[ -L out/soong/workspace/b/BUILD ]] || fail "a/BUILD not symlinked"
 }
 
-function test_integrated_bp2build_null_build {
+function test_bp2build_null_build {
   setup
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   local mtime1=$(stat -c "%y" out/soong/build.ninja)
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   local mtime2=$(stat -c "%y" out/soong/build.ninja)
 
   if [[ "$mtime1" != "$mtime2" ]]; then
@@ -535,7 +535,7 @@
   fi
 }
 
-function test_integrated_bp2build_add_to_glob {
+function test_bp2build_add_to_glob {
   setup
 
   mkdir -p a
@@ -548,11 +548,11 @@
 }
 EOF
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   grep -q a1.txt out/soong/bp2build/a/BUILD || fail "a1.txt not in BUILD file"
 
   touch a/a2.txt
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   grep -q a2.txt out/soong/bp2build/a/BUILD || fail "a2.txt not in BUILD file"
 }
 
@@ -564,7 +564,7 @@
   fi
 }
 
-function test_integrated_bp2build_bazel_workspace_structure {
+function test_bp2build_bazel_workspace_structure {
   setup
 
   mkdir -p a/b
@@ -578,7 +578,7 @@
 }
 EOF
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   [[ -e out/soong/workspace ]] || fail "Bazel workspace not created"
   [[ -d out/soong/workspace/a/b ]] || fail "module directory not a directory"
   [[ -L out/soong/workspace/a/b/BUILD ]] || fail "BUILD file not symlinked"
@@ -589,7 +589,7 @@
   [[ ! -e out/soong/workspace/out ]] || fail "out directory symlinked"
 }
 
-function test_integrated_bp2build_bazel_workspace_add_file {
+function test_bp2build_bazel_workspace_add_file {
   setup
 
   mkdir -p a
@@ -602,10 +602,10 @@
 }
 EOF
 
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
 
   touch a/a2.txt  # No reference in the .bp file needed
-  INTEGRATED_BP2BUILD=1 run_soong
+  GENERATE_BAZEL_FILES=1 run_soong
   [[ -L out/soong/workspace/a/a2.txt ]] || fail "a/a2.txt not symlinked"
 }
 
@@ -622,9 +622,9 @@
 test_glob_during_bootstrapping
 test_soong_build_rerun_iff_environment_changes
 test_dump_json_module_graph
-test_integrated_bp2build_smoke
-test_integrated_bp2build_null_build
-test_integrated_bp2build_add_android_bp
-test_integrated_bp2build_add_to_glob
-test_integrated_bp2build_bazel_workspace_structure
-test_integrated_bp2build_bazel_workspace_add_file
+test_bp2build_smoke
+test_bp2build_null_build
+test_bp2build_add_android_bp
+test_bp2build_add_to_glob
+test_bp2build_bazel_workspace_structure
+test_bp2build_bazel_workspace_add_file
diff --git a/ui/build/build.go b/ui/build/build.go
index 3692f4f..c2ad057 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -258,8 +258,8 @@
 		// Run Soong
 		runSoong(ctx, config)
 
-		if config.Environment().IsEnvTrue("GENERATE_BAZEL_FILES") {
-			// Return early, if we're using Soong as the bp2build converter.
+		if config.bazelBuildMode() == generateBuildFiles {
+			// Return early, if we're using Soong as solely the generator of BUILD files.
 			return
 		}
 	}
diff --git a/ui/build/config.go b/ui/build/config.go
index 4816d1f..1d1f71f 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -93,6 +93,21 @@
 	BUILD_MODULES
 )
 
+type bazelBuildMode int
+
+// Bazel-related build modes.
+const (
+	// Don't use bazel at all.
+	noBazel bazelBuildMode = iota
+
+	// Only generate build files (in a subdirectory of the out directory) and exit.
+	generateBuildFiles
+
+	// Generate synthetic build files and incorporate these files into a build which
+	// partially uses Bazel. Build metadata may come from Android.bp or BUILD files.
+	mixedBuild
+)
+
 // checkTopDir validates that the current directory is at the root directory of the source tree.
 func checkTopDir(ctx Context) {
 	if _, err := os.Stat(srcDirFileCheck); err != nil {
@@ -897,6 +912,16 @@
 	return c.useBazel
 }
 
+func (c *configImpl) bazelBuildMode() bazelBuildMode {
+	if c.Environment().IsEnvTrue("USE_BAZEL_ANALYSIS") {
+		return mixedBuild
+	} else if c.Environment().IsEnvTrue("GENERATE_BAZEL_FILES") {
+		return generateBuildFiles
+	} else {
+		return noBazel
+	}
+}
+
 func (c *configImpl) StartRBE() bool {
 	if !c.UseRBE() {
 		return false
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 7e94b25..a41dbe1 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -206,7 +206,8 @@
 		}
 	}
 
-	integratedBp2Build := config.Environment().IsEnvTrue("INTEGRATED_BP2BUILD")
+	buildMode := config.bazelBuildMode()
+	integratedBp2Build := (buildMode == mixedBuild) || (buildMode == generateBuildFiles)
 
 	// This is done unconditionally, but does not take a measurable amount of time
 	bootstrapBlueprint(ctx, config, integratedBp2Build)
@@ -312,7 +313,7 @@
 
 func shouldCollectBuildSoongMetrics(config Config) bool {
 	// Do not collect metrics protobuf if the soong_build binary ran as the bp2build converter.
-	return config.Environment().IsFalse("GENERATE_BAZEL_FILES")
+	return config.bazelBuildMode() != generateBuildFiles
 }
 
 func loadSoongBuildMetrics(ctx Context, config Config) *soong_metrics_proto.SoongBuildMetrics {