diff --git a/zip/cmd/main.go b/zip/cmd/main.go
index 5c6199e..dfd56dc 100644
--- a/zip/cmd/main.go
+++ b/zip/cmd/main.go
@@ -21,8 +21,8 @@
 	"io"
 	"io/ioutil"
 	"os"
-	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 
 	"android/soong/zip"
@@ -65,13 +65,14 @@
 }
 
 func (f *file) Set(s string) error {
-	if *relativeRoot == "" {
-		return fmt.Errorf("must pass -C before -f")
+	if relativeRoot == "" && !junkPaths {
+		return fmt.Errorf("must pass -C or -j before -f")
 	}
 
 	fArgs = append(fArgs, zip.FileArg{
-		PathPrefixInZip:     filepath.Clean(*rootPrefix),
-		SourcePrefixToStrip: filepath.Clean(*relativeRoot),
+		PathPrefixInZip:     *rootPrefix,
+		SourcePrefixToStrip: relativeRoot,
+		JunkPaths:           junkPaths,
 		SourceFiles:         []string{s},
 	})
 
@@ -83,8 +84,8 @@
 }
 
 func (l *listFiles) Set(s string) error {
-	if *relativeRoot == "" {
-		return fmt.Errorf("must pass -C before -l")
+	if relativeRoot == "" && !junkPaths {
+		return fmt.Errorf("must pass -C or -j before -l")
 	}
 
 	list, err := ioutil.ReadFile(s)
@@ -93,8 +94,9 @@
 	}
 
 	fArgs = append(fArgs, zip.FileArg{
-		PathPrefixInZip:     filepath.Clean(*rootPrefix),
-		SourcePrefixToStrip: filepath.Clean(*relativeRoot),
+		PathPrefixInZip:     *rootPrefix,
+		SourcePrefixToStrip: relativeRoot,
+		JunkPaths:           junkPaths,
 		SourceFiles:         strings.Split(string(list), "\n"),
 	})
 
@@ -106,21 +108,47 @@
 }
 
 func (d *dir) Set(s string) error {
-	if *relativeRoot == "" {
-		return fmt.Errorf("must pass -C before -D")
+	if relativeRoot == "" && !junkPaths {
+		return fmt.Errorf("must pass -C or -j before -D")
 	}
 
 	fArgs = append(fArgs, zip.FileArg{
-		PathPrefixInZip:     filepath.Clean(*rootPrefix),
-		SourcePrefixToStrip: filepath.Clean(*relativeRoot),
-		GlobDir:             filepath.Clean(s),
+		PathPrefixInZip:     *rootPrefix,
+		SourcePrefixToStrip: relativeRoot,
+		JunkPaths:           junkPaths,
+		GlobDir:             s,
 	})
 
 	return nil
 }
 
+type relativeRootImpl struct{}
+
+func (*relativeRootImpl) String() string { return relativeRoot }
+
+func (*relativeRootImpl) Set(s string) error {
+	relativeRoot = s
+	junkPaths = false
+	return nil
+}
+
+type junkPathsImpl struct{}
+
+func (*junkPathsImpl) IsBoolFlag() bool { return true }
+
+func (*junkPathsImpl) String() string { return relativeRoot }
+
+func (*junkPathsImpl) Set(s string) error {
+	var err error
+	junkPaths, err = strconv.ParseBool(s)
+	relativeRoot = ""
+	return err
+}
+
 var (
-	rootPrefix, relativeRoot *string
+	rootPrefix   *string
+	relativeRoot string
+	junkPaths    bool
 
 	fArgs            zip.FileArgs
 	nonDeflatedFiles = make(uniqueSet)
@@ -154,7 +182,6 @@
 	manifest := flags.String("m", "", "input jar manifest file name")
 	directories := flags.Bool("d", false, "include directories in zip")
 	rootPrefix = flags.String("P", "", "path prefix within the zip at which to place files")
-	relativeRoot = flags.String("C", "", "path to use as relative root of files in following -f, -l, or -D arguments")
 	compLevel := flags.Int("L", 5, "deflate compression level (0-9)")
 	emulateJar := flags.Bool("jar", false, "modify the resultant .zip to emulate the output of 'jar'")
 	writeIfChanged := flags.Bool("write_if_changed", false, "only update resultant .zip if it has changed")
@@ -167,6 +194,8 @@
 	flags.Var(&dir{}, "D", "directory to include in zip")
 	flags.Var(&file{}, "f", "file to include in zip")
 	flags.Var(&nonDeflatedFiles, "s", "file path to be stored within the zip without compression")
+	flags.Var(&relativeRootImpl{}, "C", "path to use as relative root of files in following -f, -l, or -D arguments")
+	flags.Var(&junkPathsImpl{}, "j", "junk paths, zip files without directory names")
 
 	flags.Parse(expandedArgs[1:])
 
diff --git a/zip/zip.go b/zip/zip.go
index a8df51e..6b36e10 100644
--- a/zip/zip.go
+++ b/zip/zip.go
@@ -87,6 +87,7 @@
 type FileArg struct {
 	PathPrefixInZip, SourcePrefixToStrip string
 	SourceFiles                          []string
+	JunkPaths                            bool
 	GlobDir                              string
 }
 
@@ -228,8 +229,7 @@
 			srcs = append(srcs, recursiveGlobFiles(fa.GlobDir)...)
 		}
 		for _, src := range srcs {
-			err := fillPathPairs(fa.PathPrefixInZip, fa.SourcePrefixToStrip, src,
-				&pathMappings, args.NonDeflatedFiles, noCompression)
+			err := fillPathPairs(fa, src, &pathMappings, args.NonDeflatedFiles, noCompression)
 			if err != nil {
 				log.Fatal(err)
 			}
@@ -270,7 +270,7 @@
 	return nil
 }
 
-func fillPathPairs(prefix, rel, src string, pathMappings *[]pathMapping,
+func fillPathPairs(fa FileArg, src string, pathMappings *[]pathMapping,
 	nonDeflatedFiles map[string]bool, noCompression bool) error {
 
 	src = strings.TrimSpace(src)
@@ -278,11 +278,18 @@
 		return nil
 	}
 	src = filepath.Clean(src)
-	dest, err := filepath.Rel(rel, src)
-	if err != nil {
-		return err
+	var dest string
+
+	if fa.JunkPaths {
+		dest = filepath.Base(src)
+	} else {
+		var err error
+		dest, err = filepath.Rel(fa.SourcePrefixToStrip, src)
+		if err != nil {
+			return err
+		}
 	}
-	dest = filepath.Join(prefix, dest)
+	dest = filepath.Join(fa.PathPrefixInZip, dest)
 
 	zipMethod := zip.Deflate
 	if _, found := nonDeflatedFiles[dest]; found || noCompression {