Merge "Use absolute paths in classpaths.proto."
diff --git a/android/bazel.go b/android/bazel.go
index 4f8392d..4da899b 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -180,11 +180,10 @@
 		"liblinker_malloc", // http://b/186826466, cc_library_static, depends on //external/zlib:libz (http://b/186823782)
 		//                                                       also depends on //system/libziparchive:libziparchive (http://b/186823656)
 		//                                                       also depends on //system/logging/liblog:liblog (http://b/186822772)
-		"libc_jemalloc_wrapper", // http://b/187012490, cc_library_static, depends on //external/jemalloc_new:libjemalloc5 (http://b/186828626)
-		"libc_ndk",              // http://b/187013218, cc_library_static, depends on //bionic/libm:libm (http://b/183064661)
-		"libc",                  // http://b/183064430, cc_library, depends on //external/jemalloc_new:libjemalloc5 (http://b/186828626)
-		"libc_malloc_hooks",     // http://b/187016307, cc_library, ld.lld: error: undefined symbol: __malloc_hook
-		"libm",                  // http://b/183064661, cc_library, math.h:25:16: error: unexpected token in argument list
+		"libc_ndk",          // http://b/187013218, cc_library_static, depends on //bionic/libm:libm (http://b/183064661)
+		"libc",              // http://b/183064430, cc_library, depends on //external/jemalloc_new:libjemalloc5 (http://b/186828626)
+		"libc_malloc_hooks", // http://b/187016307, cc_library, ld.lld: error: undefined symbol: __malloc_hook
+		"libm",              // http://b/183064661, cc_library, math.h:25:16: error: unexpected token in argument list
 
 		// http://b/186823769: Needs C++ STL support, includes from unconverted standard libraries in //external/libcxx
 		// c++_static
@@ -204,7 +203,6 @@
 		"note_memtag_heap_async", // http://b/185127353: cc_library_static, error: feature.h not found
 		"note_memtag_heap_sync",  // http://b/185127353: cc_library_static, error: feature.h not found
 
-		"libjemalloc5",           // cc_library, ld.lld: error: undefined symbol: memset
 		"gwp_asan_crash_handler", // cc_library, ld.lld: error: undefined symbol: memset
 
 		// Tests. Handle later.
@@ -217,13 +215,14 @@
 	// Per-module denylist of cc_library modules to only generate the static
 	// variant if their shared variant isn't ready or buildable by Bazel.
 	bp2buildCcLibraryStaticOnlyList = []string{
-		"libstdc++", // http://b/186822597, cc_library, ld.lld: error: undefined symbol: __errno
+		"libstdc++",    // http://b/186822597, cc_library, ld.lld: error: undefined symbol: __errno
+		"libjemalloc5", // http://b/188503688, cc_library, `target: { android: { enabled: false } }` for android targets.
 	}
 
 	// Per-module denylist to opt modules out of mixed builds. Such modules will
 	// still be generated via bp2build.
 	mixedBuildsDisabledList = []string{
-		"libc_bionic_ndk",                  // cparsons@, http://b/183213331, Handle generated headers in mixed builds.
+		"libc_bionic_ndk",                  // cparsons@ cc_library_static, depends on //bionic/libc:libsystemproperties
 		"libc_common",                      // cparsons@ cc_library_static, depends on //bionic/libc:libc_nopthread
 		"libc_common_static",               // cparsons@ cc_library_static, depends on //bionic/libc:libc_common
 		"libc_common_shared",               // cparsons@ cc_library_static, depends on //bionic/libc:libc_common
diff --git a/bazel/aquery.go b/bazel/aquery.go
index 555f1dc..bda3a1a 100644
--- a/bazel/aquery.go
+++ b/bazel/aquery.go
@@ -81,23 +81,30 @@
 	Mnemonic    string
 }
 
-// AqueryBuildStatements returns an array of BuildStatements which should be registered (and output
-// to a ninja file) to correspond one-to-one with the given action graph json proto (from a bazel
-// aquery invocation).
-func AqueryBuildStatements(aqueryJsonProto []byte) ([]BuildStatement, error) {
-	buildStatements := []BuildStatement{}
+// A helper type for aquery processing which facilitates retrieval of path IDs from their
+// less readable Bazel structures (depset and path fragment).
+type aqueryArtifactHandler struct {
+	// Maps middleman artifact Id to input artifact depset ID.
+	// Middleman artifacts are treated as "substitute" artifacts for mixed builds. For example,
+	// if we find a middleman action which has outputs [foo, bar], and output [baz_middleman], then,
+	// for each other action which has input [baz_middleman], we add [foo, bar] to the inputs for
+	// that action instead.
+	middlemanIdToDepsetIds map[int][]int
+	// Maps depset Id to depset struct.
+	depsetIdToDepset map[int]depSetOfFiles
+	// depsetIdToArtifactIdsCache is a memoization of depset flattening, because flattening
+	// may be an expensive operation.
+	depsetIdToArtifactIdsCache map[int][]int
+	// Maps artifact Id to fully expanded path.
+	artifactIdToPath map[int]string
+}
 
-	var aqueryResult actionGraphContainer
-	err := json.Unmarshal(aqueryJsonProto, &aqueryResult)
-
-	if err != nil {
-		return nil, err
-	}
-
+func newAqueryHandler(aqueryResult actionGraphContainer) (*aqueryArtifactHandler, error) {
 	pathFragments := map[int]pathFragment{}
 	for _, pathFragment := range aqueryResult.PathFragments {
 		pathFragments[pathFragment.Id] = pathFragment
 	}
+
 	artifactIdToPath := map[int]string{}
 	for _, artifact := range aqueryResult.Artifacts {
 		artifactPath, err := expandPathFragment(artifact.PathFragmentId, pathFragments)
@@ -112,22 +119,87 @@
 		depsetIdToDepset[depset.Id] = depset
 	}
 
-	// depsetIdToArtifactIdsCache is a memoization of depset flattening, because flattening
-	// may be an expensive operation.
-	depsetIdToArtifactIdsCache := map[int][]int{}
-
 	// Do a pass through all actions to identify which artifacts are middleman artifacts.
-	// These will be omitted from the inputs of other actions.
-	// TODO(b/180945500): Handle middleman actions; without proper handling, depending on generated
-	// headers may cause build failures.
-	middlemanArtifactIds := map[int]bool{}
+	middlemanIdToDepsetIds := map[int][]int{}
 	for _, actionEntry := range aqueryResult.Actions {
 		if actionEntry.Mnemonic == "Middleman" {
 			for _, outputId := range actionEntry.OutputIds {
-				middlemanArtifactIds[outputId] = true
+				middlemanIdToDepsetIds[outputId] = actionEntry.InputDepSetIds
 			}
 		}
 	}
+	return &aqueryArtifactHandler{
+		middlemanIdToDepsetIds:     middlemanIdToDepsetIds,
+		depsetIdToDepset:           depsetIdToDepset,
+		depsetIdToArtifactIdsCache: map[int][]int{},
+		artifactIdToPath:           artifactIdToPath,
+	}, nil
+}
+
+func (a *aqueryArtifactHandler) getInputPaths(depsetIds []int) ([]string, error) {
+	inputPaths := []string{}
+
+	for _, inputDepSetId := range depsetIds {
+		inputArtifacts, err := a.artifactIdsFromDepsetId(inputDepSetId)
+		if err != nil {
+			return nil, err
+		}
+		for _, inputId := range inputArtifacts {
+			if middlemanInputDepsetIds, isMiddlemanArtifact := a.middlemanIdToDepsetIds[inputId]; isMiddlemanArtifact {
+				// Add all inputs from middleman actions which created middleman artifacts which are
+				// in the inputs for this action.
+				swappedInputPaths, err := a.getInputPaths(middlemanInputDepsetIds)
+				if err != nil {
+					return nil, err
+				}
+				inputPaths = append(inputPaths, swappedInputPaths...)
+			} else {
+				inputPath, exists := a.artifactIdToPath[inputId]
+				if !exists {
+					return nil, fmt.Errorf("undefined input artifactId %d", inputId)
+				}
+				inputPaths = append(inputPaths, inputPath)
+			}
+		}
+	}
+	return inputPaths, nil
+}
+
+func (a *aqueryArtifactHandler) artifactIdsFromDepsetId(depsetId int) ([]int, error) {
+	if result, exists := a.depsetIdToArtifactIdsCache[depsetId]; exists {
+		return result, nil
+	}
+	if depset, exists := a.depsetIdToDepset[depsetId]; exists {
+		result := depset.DirectArtifactIds
+		for _, childId := range depset.TransitiveDepSetIds {
+			childArtifactIds, err := a.artifactIdsFromDepsetId(childId)
+			if err != nil {
+				return nil, err
+			}
+			result = append(result, childArtifactIds...)
+		}
+		a.depsetIdToArtifactIdsCache[depsetId] = result
+		return result, nil
+	} else {
+		return nil, fmt.Errorf("undefined input depsetId %d", depsetId)
+	}
+}
+
+// AqueryBuildStatements returns an array of BuildStatements which should be registered (and output
+// to a ninja file) to correspond one-to-one with the given action graph json proto (from a bazel
+// aquery invocation).
+func AqueryBuildStatements(aqueryJsonProto []byte) ([]BuildStatement, error) {
+	buildStatements := []BuildStatement{}
+
+	var aqueryResult actionGraphContainer
+	err := json.Unmarshal(aqueryJsonProto, &aqueryResult)
+	if err != nil {
+		return nil, err
+	}
+	aqueryHandler, err := newAqueryHandler(aqueryResult)
+	if err != nil {
+		return nil, err
+	}
 
 	for _, actionEntry := range aqueryResult.Actions {
 		if shouldSkipAction(actionEntry) {
@@ -136,7 +208,7 @@
 		outputPaths := []string{}
 		var depfile *string
 		for _, outputId := range actionEntry.OutputIds {
-			outputPath, exists := artifactIdToPath[outputId]
+			outputPath, exists := aqueryHandler.artifactIdToPath[outputId]
 			if !exists {
 				return nil, fmt.Errorf("undefined outputId %d", outputId)
 			}
@@ -151,25 +223,11 @@
 				outputPaths = append(outputPaths, outputPath)
 			}
 		}
-		inputPaths := []string{}
-		for _, inputDepSetId := range actionEntry.InputDepSetIds {
-			inputArtifacts, err :=
-				artifactIdsFromDepsetId(depsetIdToDepset, depsetIdToArtifactIdsCache, inputDepSetId)
-			if err != nil {
-				return nil, err
-			}
-			for _, inputId := range inputArtifacts {
-				if _, isMiddlemanArtifact := middlemanArtifactIds[inputId]; isMiddlemanArtifact {
-					// Omit middleman artifacts.
-					continue
-				}
-				inputPath, exists := artifactIdToPath[inputId]
-				if !exists {
-					return nil, fmt.Errorf("undefined input artifactId %d", inputId)
-				}
-				inputPaths = append(inputPaths, inputPath)
-			}
+		inputPaths, err := aqueryHandler.getInputPaths(actionEntry.InputDepSetIds)
+		if err != nil {
+			return nil, err
 		}
+
 		buildStatement := BuildStatement{
 			Command:     strings.Join(proptools.ShellEscapeList(actionEntry.Arguments), " "),
 			Depfile:     depfile,
@@ -192,8 +250,9 @@
 	if a.Mnemonic == "Symlink" || a.Mnemonic == "SourceSymlinkManifest" || a.Mnemonic == "SymlinkTree" {
 		return true
 	}
-	// TODO(b/180945500): Handle middleman actions; without proper handling, depending on generated
-	// headers may cause build failures.
+	// Middleman actions are not handled like other actions; they are handled separately as a
+	// preparatory step so that their inputs may be relayed to actions depending on middleman
+	// artifacts.
 	if a.Mnemonic == "Middleman" {
 		return true
 	}
@@ -209,28 +268,6 @@
 	return false
 }
 
-func artifactIdsFromDepsetId(depsetIdToDepset map[int]depSetOfFiles,
-	depsetIdToArtifactIdsCache map[int][]int, depsetId int) ([]int, error) {
-	if result, exists := depsetIdToArtifactIdsCache[depsetId]; exists {
-		return result, nil
-	}
-	if depset, exists := depsetIdToDepset[depsetId]; exists {
-		result := depset.DirectArtifactIds
-		for _, childId := range depset.TransitiveDepSetIds {
-			childArtifactIds, err :=
-				artifactIdsFromDepsetId(depsetIdToDepset, depsetIdToArtifactIdsCache, childId)
-			if err != nil {
-				return nil, err
-			}
-			result = append(result, childArtifactIds...)
-		}
-		depsetIdToArtifactIdsCache[depsetId] = result
-		return result, nil
-	} else {
-		return nil, fmt.Errorf("undefined input depsetId %d", depsetId)
-	}
-}
-
 func expandPathFragment(id int, pathFragmentsMap map[int]pathFragment) (string, error) {
 	labels := []string{}
 	currId := id
diff --git a/bazel/aquery_test.go b/bazel/aquery_test.go
index fa8810f..7b40dcd 100644
--- a/bazel/aquery_test.go
+++ b/bazel/aquery_test.go
@@ -718,6 +718,93 @@
 	assertBuildStatements(t, expectedBuildStatements, actualbuildStatements)
 }
 
+func TestMiddlemenAction(t *testing.T) {
+	const inputString = `
+{
+  "artifacts": [{
+    "id": 1,
+    "pathFragmentId": 1
+  }, {
+    "id": 2,
+    "pathFragmentId": 2
+  }, {
+    "id": 3,
+    "pathFragmentId": 3
+  }, {
+    "id": 4,
+    "pathFragmentId": 4
+  }, {
+    "id": 5,
+    "pathFragmentId": 5
+  }, {
+    "id": 6,
+    "pathFragmentId": 6
+  }],
+  "pathFragments": [{
+    "id": 1,
+    "label": "middleinput_one"
+  }, {
+    "id": 2,
+    "label": "middleinput_two"
+  }, {
+    "id": 3,
+    "label": "middleman_artifact"
+  }, {
+    "id": 4,
+    "label": "maininput_one"
+  }, {
+    "id": 5,
+    "label": "maininput_two"
+  }, {
+    "id": 6,
+    "label": "output"
+  }],
+  "depSetOfFiles": [{
+    "id": 1,
+    "directArtifactIds": [1, 2]
+  }, {
+    "id": 2,
+    "directArtifactIds": [3, 4, 5]
+  }],
+  "actions": [{
+    "targetId": 1,
+    "actionKey": "x",
+    "mnemonic": "Middleman",
+    "arguments": ["touch", "foo"],
+    "inputDepSetIds": [1],
+    "outputIds": [3],
+    "primaryOutputId": 3
+  }, {
+    "targetId": 2,
+    "actionKey": "y",
+    "mnemonic": "Main action",
+    "arguments": ["touch", "foo"],
+    "inputDepSetIds": [2],
+    "outputIds": [6],
+    "primaryOutputId": 6
+  }]
+}`
+
+	actual, err := AqueryBuildStatements([]byte(inputString))
+	if err != nil {
+		t.Errorf("Unexpected error %q", err)
+	}
+	if expected := 1; len(actual) != expected {
+		t.Fatalf("Expected %d build statements, got %d", expected, len(actual))
+	}
+
+	bs := actual[0]
+	expectedInputs := []string{"middleinput_one", "middleinput_two", "maininput_one", "maininput_two"}
+	if !reflect.DeepEqual(bs.InputPaths, expectedInputs) {
+		t.Errorf("Expected main action inputs %q, but got %q", expectedInputs, bs.InputPaths)
+	}
+
+	expectedOutputs := []string{"output"}
+	if !reflect.DeepEqual(bs.OutputPaths, expectedOutputs) {
+		t.Errorf("Expected main action outputs %q, but got %q", expectedOutputs, bs.OutputPaths)
+	}
+}
+
 func assertError(t *testing.T, err error, expected string) {
 	if err == nil {
 		t.Errorf("expected error '%s', but got no error", expected)
diff --git a/bp2build/constants.go b/bp2build/constants.go
index 70f320e..4870dff 100644
--- a/bp2build/constants.go
+++ b/bp2build/constants.go
@@ -19,7 +19,10 @@
 	// be preferred for use within a Bazel build.
 
 	// The file name used for automatically generated files.
-	GeneratedBuildFileName = "BUILD"
+	GeneratedBuildFileName = "BUILD.bazel"
+
 	// The file name used for hand-crafted build targets.
+	// NOTE: It is okay that this matches GeneratedBuildFileName, since we generate BUILD files in a different directory to source files
+	// FIXME: Because there are hundreds of existing BUILD.bazel files in the AOSP tree, we should pick another name here, like BUILD.android
 	HandcraftedBuildFileName = "BUILD.bazel"
 )
diff --git a/bp2build/conversion_test.go b/bp2build/conversion_test.go
index a08c03d..0931ff7 100644
--- a/bp2build/conversion_test.go
+++ b/bp2build/conversion_test.go
@@ -29,7 +29,7 @@
 	expectedFilePaths := []bazelFilepath{
 		{
 			dir:      "",
-			basename: "BUILD",
+			basename: "BUILD.bazel",
 		},
 		{
 			dir:      "",
@@ -37,7 +37,7 @@
 		},
 		{
 			dir:      bazelRulesSubDir,
-			basename: "BUILD",
+			basename: "BUILD.bazel",
 		},
 		{
 			dir:      bazelRulesSubDir,
@@ -69,7 +69,7 @@
 
 		if actualFile.Dir != expectedFile.dir || actualFile.Basename != expectedFile.basename {
 			t.Errorf("Did not find expected file %s/%s", actualFile.Dir, actualFile.Basename)
-		} else if actualFile.Basename == "BUILD" || actualFile.Basename == "WORKSPACE" {
+		} else if actualFile.Basename == "BUILD.bazel" || actualFile.Basename == "WORKSPACE" {
 			if actualFile.Contents != "" {
 				t.Errorf("Expected %s to have no content.", actualFile)
 			}
diff --git a/cc/Android.bp b/cc/Android.bp
index c32cca8..1fc8d9f 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -92,6 +92,7 @@
         "object_test.go",
         "prebuilt_test.go",
         "proto_test.go",
+        "sanitize_test.go",
         "test_data_test.go",
         "vendor_public_library_test.go",
         "vendor_snapshot_test.go",
diff --git a/cc/makevars.go b/cc/makevars.go
index da5f1fd..2b326ef 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -288,9 +288,7 @@
 		ctx.Strict(makePrefix+"OBJCOPY", "${config.ClangBin}/llvm-objcopy")
 		ctx.Strict(makePrefix+"LD", "${config.ClangBin}/lld")
 		ctx.Strict(makePrefix+"NDK_TRIPLE", config.NDKTriple(toolchain))
-		// TODO: work out whether to make this "${config.ClangBin}/llvm-", which
-		// should mostly work, or remove it.
-		ctx.Strict(makePrefix+"TOOLS_PREFIX", gccCmd(toolchain, ""))
+		ctx.Strict(makePrefix+"TOOLS_PREFIX", "${config.ClangBin}/llvm-")
 		// TODO: GCC version is obsolete now that GCC has been removed.
 		ctx.Strict(makePrefix+"GCC_VERSION", toolchain.GccVersion())
 	}
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 605a8d0..f486ee4 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -902,7 +902,7 @@
 					if d, ok := child.(PlatformSanitizeable); ok && d.SanitizePropDefined() &&
 						!d.SanitizeNever() &&
 						!d.IsSanitizerExplicitlyDisabled(t) {
-						if t == cfi || t == Hwasan || t == scs {
+						if t == cfi || t == Hwasan || t == scs || t == Asan {
 							if d.StaticallyLinked() && d.SanitizerSupported(t) {
 								// Rust does not support some of these sanitizers, so we need to check if it's
 								// supported before setting this true.
@@ -1261,7 +1261,7 @@
 				modules[0].(PlatformSanitizeable).SetSanitizer(t, true)
 			} else if c.IsSanitizerEnabled(t) || c.SanitizeDep() {
 				isSanitizerEnabled := c.IsSanitizerEnabled(t)
-				if c.StaticallyLinked() || c.Header() || t == Asan || t == Fuzzer {
+				if c.StaticallyLinked() || c.Header() || t == Fuzzer {
 					// Static and header libs are split into non-sanitized and sanitized variants.
 					// Shared libs are not split. However, for asan and fuzzer, we split even for shared
 					// libs because a library sanitized for asan/fuzzer can't be linked from a library
diff --git a/cc/sanitize_test.go b/cc/sanitize_test.go
new file mode 100644
index 0000000..f126346
--- /dev/null
+++ b/cc/sanitize_test.go
@@ -0,0 +1,204 @@
+// Copyright 2021 Google Inc. All rights reserved.
+//
+// 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 cc
+
+import (
+	"testing"
+
+	"android/soong/android"
+)
+
+var prepareForAsanTest = android.FixtureAddFile("asan/Android.bp", []byte(`
+	cc_library_shared {
+		name: "libclang_rt.asan-aarch64-android",
+	}
+
+	cc_library_shared {
+		name: "libclang_rt.asan-arm-android",
+	}
+`))
+
+func TestAsan(t *testing.T) {
+	bp := `
+		cc_binary {
+			name: "bin_with_asan",
+			host_supported: true,
+			shared_libs: [
+				"libshared",
+				"libasan",
+			],
+			static_libs: [
+				"libstatic",
+				"libnoasan",
+			],
+			sanitize: {
+				address: true,
+			}
+		}
+
+		cc_binary {
+			name: "bin_no_asan",
+			host_supported: true,
+			shared_libs: [
+				"libshared",
+				"libasan",
+			],
+			static_libs: [
+				"libstatic",
+				"libnoasan",
+			],
+		}
+
+		cc_library_shared {
+			name: "libshared",
+			host_supported: true,
+			shared_libs: ["libtransitive"],
+		}
+
+		cc_library_shared {
+			name: "libasan",
+			host_supported: true,
+			shared_libs: ["libtransitive"],
+			sanitize: {
+				address: true,
+			}
+		}
+
+		cc_library_shared {
+			name: "libtransitive",
+			host_supported: true,
+		}
+
+		cc_library_static {
+			name: "libstatic",
+			host_supported: true,
+		}
+
+		cc_library_static {
+			name: "libnoasan",
+			host_supported: true,
+			sanitize: {
+				address: false,
+			}
+		}
+	`
+
+	result := android.GroupFixturePreparers(
+		prepareForCcTest,
+		prepareForAsanTest,
+	).RunTestWithBp(t, bp)
+
+	check := func(t *testing.T, result *android.TestResult, variant string) {
+		asanVariant := variant + "_asan"
+		sharedVariant := variant + "_shared"
+		sharedAsanVariant := sharedVariant + "_asan"
+		staticVariant := variant + "_static"
+		staticAsanVariant := staticVariant + "_asan"
+
+		// The binaries, one with asan and one without
+		binWithAsan := result.ModuleForTests("bin_with_asan", asanVariant)
+		binNoAsan := result.ModuleForTests("bin_no_asan", variant)
+
+		// Shared libraries that don't request asan
+		libShared := result.ModuleForTests("libshared", sharedVariant)
+		libTransitive := result.ModuleForTests("libtransitive", sharedVariant)
+
+		// Shared library that requests asan
+		libAsan := result.ModuleForTests("libasan", sharedAsanVariant)
+
+		// Static library that uses an asan variant for bin_with_asan and a non-asan variant
+		// for bin_no_asan.
+		libStaticAsanVariant := result.ModuleForTests("libstatic", staticAsanVariant)
+		libStaticNoAsanVariant := result.ModuleForTests("libstatic", staticVariant)
+
+		// Static library that never uses asan.
+		libNoAsan := result.ModuleForTests("libnoasan", staticVariant)
+
+		// expectSharedLinkDep verifies that the from module links against the to module as a
+		// shared library.
+		expectSharedLinkDep := func(from, to android.TestingModule) {
+			t.Helper()
+			fromLink := from.Description("link")
+			toLink := to.Description("strip")
+
+			if g, w := fromLink.OrderOnly.Strings(), toLink.Output.String(); !android.InList(w, g) {
+				t.Errorf("%s should link against %s, expected %q, got %q",
+					from.Module(), to.Module(), w, g)
+			}
+		}
+
+		// expectStaticLinkDep verifies that the from module links against the to module as a
+		// static library.
+		expectStaticLinkDep := func(from, to android.TestingModule) {
+			t.Helper()
+			fromLink := from.Description("link")
+			toLink := to.Description("static link")
+
+			if g, w := fromLink.Implicits.Strings(), toLink.Output.String(); !android.InList(w, g) {
+				t.Errorf("%s should link against %s, expected %q, got %q",
+					from.Module(), to.Module(), w, g)
+			}
+
+		}
+
+		// expectInstallDep verifies that the install rule of the from module depends on the
+		// install rule of the to module.
+		expectInstallDep := func(from, to android.TestingModule) {
+			t.Helper()
+			fromInstalled := from.Description("install")
+			toInstalled := to.Description("install")
+
+			// combine implicits and order-only dependencies, host uses implicit but device uses
+			// order-only.
+			got := append(fromInstalled.Implicits.Strings(), fromInstalled.OrderOnly.Strings()...)
+			want := toInstalled.Output.String()
+			if !android.InList(want, got) {
+				t.Errorf("%s installation should depend on %s, expected %q, got %q",
+					from.Module(), to.Module(), want, got)
+			}
+		}
+
+		expectSharedLinkDep(binWithAsan, libShared)
+		expectSharedLinkDep(binWithAsan, libAsan)
+		expectSharedLinkDep(libShared, libTransitive)
+		expectSharedLinkDep(libAsan, libTransitive)
+
+		expectStaticLinkDep(binWithAsan, libStaticAsanVariant)
+		expectStaticLinkDep(binWithAsan, libNoAsan)
+
+		expectInstallDep(binWithAsan, libShared)
+		expectInstallDep(binWithAsan, libAsan)
+		expectInstallDep(binWithAsan, libTransitive)
+		expectInstallDep(libShared, libTransitive)
+		expectInstallDep(libAsan, libTransitive)
+
+		expectSharedLinkDep(binNoAsan, libShared)
+		expectSharedLinkDep(binNoAsan, libAsan)
+		expectSharedLinkDep(libShared, libTransitive)
+		expectSharedLinkDep(libAsan, libTransitive)
+
+		expectStaticLinkDep(binNoAsan, libStaticNoAsanVariant)
+		expectStaticLinkDep(binNoAsan, libNoAsan)
+
+		expectInstallDep(binNoAsan, libShared)
+		expectInstallDep(binNoAsan, libAsan)
+		expectInstallDep(binNoAsan, libTransitive)
+		expectInstallDep(libShared, libTransitive)
+		expectInstallDep(libAsan, libTransitive)
+	}
+
+	t.Run("host", func(t *testing.T) { check(t, result, result.Config.BuildOSTarget.String()) })
+	t.Run("device", func(t *testing.T) { check(t, result, "android_arm64_armv8-a") })
+}
diff --git a/java/base.go b/java/base.go
index c828503..0d2f1ac 100644
--- a/java/base.go
+++ b/java/base.go
@@ -889,8 +889,8 @@
 		kotlincFlags := j.properties.Kotlincflags
 		CheckKotlincFlags(ctx, kotlincFlags)
 
-		// Dogfood the JVM_IR backend.
-		kotlincFlags = append(kotlincFlags, "-Xuse-ir")
+		// Workaround for KT-46512
+		kotlincFlags = append(kotlincFlags, "-Xsam-conversions=class")
 
 		// If there are kotlin files, compile them first but pass all the kotlin and java files
 		// kotlinc will use the java files to resolve types referenced by the kotlin files, but
diff --git a/tests/bootstrap_test.sh b/tests/bootstrap_test.sh
index 3f51114..42363e9 100755
--- a/tests/bootstrap_test.sh
+++ b/tests/bootstrap_test.sh
@@ -7,6 +7,8 @@
 
 source "$(dirname "$0")/lib.sh"
 
+readonly GENERATED_BUILD_FILE_NAME="BUILD.bazel"
+
 function test_smoke {
   setup
   run_soong
@@ -505,8 +507,8 @@
 EOF
 
   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"
+  [[ -e out/soong/bp2build/a/${GENERATED_BUILD_FILE_NAME} ]] || fail "a/${GENERATED_BUILD_FILE_NAME} not created"
+  [[ -L out/soong/workspace/a/${GENERATED_BUILD_FILE_NAME} ]] || fail "a/${GENERATED_BUILD_FILE_NAME} not symlinked"
 
   mkdir -p b
   touch b/b.txt
@@ -519,8 +521,8 @@
 EOF
 
   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"
+  [[ -e out/soong/bp2build/b/${GENERATED_BUILD_FILE_NAME} ]] || fail "a/${GENERATED_BUILD_FILE_NAME} not created"
+  [[ -L out/soong/workspace/b/${GENERATED_BUILD_FILE_NAME} ]] || fail "a/${GENERATED_BUILD_FILE_NAME} not symlinked"
 }
 
 function test_bp2build_null_build {
@@ -551,11 +553,11 @@
 EOF
 
   GENERATE_BAZEL_FILES=1 run_soong
-  grep -q a1.txt out/soong/bp2build/a/BUILD || fail "a1.txt not in BUILD file"
+  grep -q a1.txt "out/soong/bp2build/a/${GENERATED_BUILD_FILE_NAME}" || fail "a1.txt not in ${GENERATED_BUILD_FILE_NAME} file"
 
   touch a/a2.txt
   GENERATE_BAZEL_FILES=1 run_soong
-  grep -q a2.txt out/soong/bp2build/a/BUILD || fail "a2.txt not in BUILD file"
+  grep -q a2.txt "out/soong/bp2build/a/${GENERATED_BUILD_FILE_NAME}" || fail "a2.txt not in ${GENERATED_BUILD_FILE_NAME} file"
 }
 
 function test_dump_json_module_graph() {
@@ -583,8 +585,8 @@
   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"
-  [[ "$(readlink -f out/soong/workspace/a/b/BUILD)" =~ bp2build/a/b/BUILD$ ]] \
+  [[ -L "out/soong/workspace/a/b/${GENERATED_BUILD_FILE_NAME}" ]] || fail "${GENERATED_BUILD_FILE_NAME} file not symlinked"
+  [[ "$(readlink -f out/soong/workspace/a/b/${GENERATED_BUILD_FILE_NAME})" =~ "bp2build/a/b/${GENERATED_BUILD_FILE_NAME}"$ ]] \
     || fail "BUILD files symlinked at the wrong place"
   [[ -L out/soong/workspace/a/b/b.txt ]] || fail "a/b/b.txt not symlinked"
   [[ -L out/soong/workspace/a/a.txt ]] || fail "a/b/a.txt not symlinked"
@@ -616,7 +618,7 @@
 
   mkdir -p a
   touch a/a.txt
-  touch a/BUILD
+  touch a/${GENERATED_BUILD_FILE_NAME}
   cat > a/Android.bp <<EOF
 filegroup {
   name: "a",
@@ -626,15 +628,15 @@
 EOF
 
   GENERATE_BAZEL_FILES=1 run_soong
-  [[ -L out/soong/workspace/a/BUILD ]] || fail "BUILD file not symlinked"
-  [[ "$(readlink -f out/soong/workspace/a/BUILD)" =~ bp2build/a/BUILD$ ]] \
-    || fail "BUILD files symlinked to the wrong place"
+  [[ -L "out/soong/workspace/a/${GENERATED_BUILD_FILE_NAME}" ]] || fail "${GENERATED_BUILD_FILE_NAME} file not symlinked"
+  [[ "$(readlink -f out/soong/workspace/a/${GENERATED_BUILD_FILE_NAME})" =~ "bp2build/a/${GENERATED_BUILD_FILE_NAME}"$ ]] \
+    || fail "${GENERATED_BUILD_FILE_NAME} files symlinked to the wrong place"
 }
 
 function test_bp2build_reports_multiple_errors {
   setup
 
-  mkdir -p a/BUILD
+  mkdir -p "a/${GENERATED_BUILD_FILE_NAME}"
   touch a/a.txt
   cat > a/Android.bp <<EOF
 filegroup {
@@ -644,7 +646,7 @@
 }
 EOF
 
-  mkdir -p b/BUILD
+  mkdir -p "b/${GENERATED_BUILD_FILE_NAME}"
   touch b/b.txt
   cat > b/Android.bp <<EOF
 filegroup {
@@ -658,8 +660,8 @@
     fail "Build should have failed"
   fi
 
-  grep -q "a/BUILD' exist" "$MOCK_TOP/errors" || fail "Error for a/BUILD not found"
-  grep -q "b/BUILD' exist" "$MOCK_TOP/errors" || fail "Error for b/BUILD not found"
+  grep -q "a/${GENERATED_BUILD_FILE_NAME}' exist" "$MOCK_TOP/errors" || fail "Error for a/${GENERATED_BUILD_FILE_NAME} not found"
+  grep -q "b/${GENERATED_BUILD_FILE_NAME}' exist" "$MOCK_TOP/errors" || fail "Error for b/${GENERATED_BUILD_FILE_NAME} not found"
 }
 
 test_smoke
diff --git a/tests/bp2build_bazel_test.sh b/tests/bp2build_bazel_test.sh
index 082cd06..e357710 100755
--- a/tests/bp2build_bazel_test.sh
+++ b/tests/bp2build_bazel_test.sh
@@ -6,6 +6,8 @@
 
 source "$(dirname "$0")/lib.sh"
 
+readonly GENERATED_BUILD_FILE_NAME="BUILD.bazel"
+
 function test_bp2build_generates_all_buildfiles {
   setup
   create_mock_bazel
@@ -40,24 +42,24 @@
 
   run_bp2build
 
-  if [[ ! -f "./out/soong/workspace/foo/convertible_soong_module/BUILD" ]]; then
-    fail "./out/soong/workspace/foo/convertible_soong_module/BUILD was not generated"
+  if [[ ! -f "./out/soong/workspace/foo/convertible_soong_module/${GENERATED_BUILD_FILE_NAME}" ]]; then
+    fail "./out/soong/workspace/foo/convertible_soong_module/${GENERATED_BUILD_FILE_NAME} was not generated"
   fi
 
-  if [[ ! -f "./out/soong/workspace/foo/unconvertible_soong_module/BUILD" ]]; then
-    fail "./out/soong/workspace/foo/unconvertible_soong_module/BUILD was not generated"
+  if [[ ! -f "./out/soong/workspace/foo/unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME}" ]]; then
+    fail "./out/soong/workspace/foo/unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME} was not generated"
   fi
 
-  if ! grep "the_answer" "./out/soong/workspace/foo/convertible_soong_module/BUILD"; then
-    fail "missing BUILD target the_answer in convertible_soong_module/BUILD"
+  if ! grep "the_answer" "./out/soong/workspace/foo/convertible_soong_module/${GENERATED_BUILD_FILE_NAME}"; then
+    fail "missing BUILD target the_answer in convertible_soong_module/${GENERATED_BUILD_FILE_NAME}"
   fi
 
-  if grep "not_the_answer" "./out/soong/workspace/foo/unconvertible_soong_module/BUILD"; then
-    fail "found unexpected BUILD target not_the_answer in unconvertible_soong_module/BUILD"
+  if grep "not_the_answer" "./out/soong/workspace/foo/unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME}"; then
+    fail "found unexpected BUILD target not_the_answer in unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME}"
   fi
 
-  if ! grep "filegroup" "./out/soong/workspace/foo/unconvertible_soong_module/BUILD"; then
-    fail "missing filegroup in unconvertible_soong_module/BUILD"
+  if ! grep "filegroup" "./out/soong/workspace/foo/unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME}"; then
+    fail "missing filegroup in unconvertible_soong_module/${GENERATED_BUILD_FILE_NAME}"
   fi
 
   # NOTE: We don't actually use the extra BUILD file for anything here
diff --git a/ui/build/finder.go b/ui/build/finder.go
index 2eb84ca..09d53cc 100644
--- a/ui/build/finder.go
+++ b/ui/build/finder.go
@@ -76,6 +76,8 @@
 			"Blueprints",
 			// Bazel build definitions.
 			"BUILD.bazel",
+			// Bazel build definitions.
+			"BUILD",
 			// Kati clean definitions.
 			"CleanSpec.mk",
 			// Ownership definition.
@@ -102,7 +104,7 @@
 func findBazelFiles(entries finder.DirEntries) (dirNames []string, fileNames []string) {
 	matches := []string{}
 	for _, foundName := range entries.FileNames {
-		if foundName == "BUILD.bazel" || foundName == "WORKSPACE" || strings.HasSuffix(foundName, ".bzl") {
+		if foundName == "BUILD.bazel" || foundName == "BUILD" || foundName == "WORKSPACE" || strings.HasSuffix(foundName, ".bzl") {
 			matches = append(matches, foundName)
 		}
 	}