Merge "Fix flattened apex install dir"
diff --git a/apex/apex.go b/apex/apex.go
index b2d34d2..bb90cb9 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1223,11 +1223,13 @@
 	})
 
 	// check apex_available requirements
-	for _, fi := range filesInfo {
-		if am, ok := fi.module.(android.ApexModule); ok {
-			if !am.AvailableFor(ctx.ModuleName()) {
-				ctx.ModuleErrorf("requires %q that is not available for the APEX", fi.module.Name())
-				return
+	if !ctx.Host() {
+		for _, fi := range filesInfo {
+			if am, ok := fi.module.(android.ApexModule); ok {
+				if !am.AvailableFor(ctx.ModuleName()) {
+					ctx.ModuleErrorf("requires %q that is not available for the APEX", fi.module.Name())
+					return
+				}
 			}
 		}
 	}
diff --git a/java/config/config.go b/java/config/config.go
index ce62b93..f418ee7 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -86,6 +86,14 @@
 		// This is set up and guaranteed by soong_ui
 		return ctx.Config().Getenv("ANDROID_JAVA_HOME")
 	})
+	pctx.VariableFunc("JlinkVersion", func(ctx android.PackageVarContext) string {
+		switch ctx.Config().Getenv("EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN") {
+		case "true":
+			return "11"
+		default:
+			return "9"
+		}
+	})
 
 	pctx.SourcePathVariable("JavaToolchain", "${JavaHome}/bin")
 	pctx.SourcePathVariableWithEnvOverride("JavacCmd",
diff --git a/java/config/makevars.go b/java/config/makevars.go
index c40f4fc..2fa6f89 100644
--- a/java/config/makevars.go
+++ b/java/config/makevars.go
@@ -38,6 +38,7 @@
 	ctx.Strict("ANDROID_JAVA_HOME", "${JavaHome}")
 	ctx.Strict("ANDROID_JAVA8_HOME", "prebuilts/jdk/jdk8/${hostPrebuiltTag}")
 	ctx.Strict("ANDROID_JAVA9_HOME", "prebuilts/jdk/jdk9/${hostPrebuiltTag}")
+	ctx.Strict("ANDROID_JAVA11_HOME", "prebuilts/jdk/jdk11/${hostPrebuiltTag}")
 	ctx.Strict("ANDROID_JAVA_TOOLCHAIN", "${JavaToolchain}")
 	ctx.Strict("JAVA", "${JavaCmd} ${JavaVmFlags}")
 	ctx.Strict("JAVAC", "${JavacCmd} ${JavacVmFlags}")
diff --git a/java/system_modules.go b/java/system_modules.go
index 43e4e11..b56a401 100644
--- a/java/system_modules.go
+++ b/java/system_modules.go
@@ -36,13 +36,15 @@
 var (
 	jarsTosystemModules = pctx.AndroidStaticRule("jarsTosystemModules", blueprint.RuleParams{
 		Command: `rm -rf ${outDir} ${workDir} && mkdir -p ${workDir}/jmod && ` +
-			`${moduleInfoJavaPath} ${moduleName} $in > ${workDir}/module-info.java && ` +
+			`${moduleInfoJavaPath} java.base $in > ${workDir}/module-info.java && ` +
 			`${config.JavacCmd} --system=none --patch-module=java.base=${classpath} ${workDir}/module-info.java && ` +
 			`${config.SoongZipCmd} -jar -o ${workDir}/classes.jar -C ${workDir} -f ${workDir}/module-info.class && ` +
 			`${config.MergeZipsCmd} -j ${workDir}/module.jar ${workDir}/classes.jar $in && ` +
-			`${config.JmodCmd} create --module-version 9 --target-platform android ` +
-			`  --class-path ${workDir}/module.jar ${workDir}/jmod/${moduleName}.jmod && ` +
-			`${config.JlinkCmd} --module-path ${workDir}/jmod --add-modules ${moduleName} --output ${outDir} ` +
+			// Note: The version of the java.base module created must match the version
+			// of the jlink tool which consumes it.
+			`${config.JmodCmd} create --module-version ${config.JlinkVersion} --target-platform android ` +
+			`  --class-path ${workDir}/module.jar ${workDir}/jmod/java.base.jmod && ` +
+			`${config.JlinkCmd} --module-path ${workDir}/jmod --add-modules java.base --output ${outDir} ` +
 			// Note: The system-modules jlink plugin is disabled because (a) it is not
 			// useful on Android, and (b) it causes errors with later versions of jlink
 			// when the jdk.internal.module is absent from java.base (as it is here).
@@ -58,10 +60,10 @@
 			"${config.JrtFsJar}",
 		},
 	},
-		"moduleName", "classpath", "outDir", "workDir")
+		"classpath", "outDir", "workDir")
 )
 
-func TransformJarsToSystemModules(ctx android.ModuleContext, moduleName string, jars android.Paths) (android.Path, android.Paths) {
+func TransformJarsToSystemModules(ctx android.ModuleContext, jars android.Paths) (android.Path, android.Paths) {
 	outDir := android.PathForModuleOut(ctx, "system")
 	workDir := android.PathForModuleOut(ctx, "modules")
 	outputFile := android.PathForModuleOut(ctx, "system/lib/modules")
@@ -77,10 +79,9 @@
 		Outputs:     outputs,
 		Inputs:      jars,
 		Args: map[string]string{
-			"moduleName": moduleName,
-			"classpath":  strings.Join(jars.Strings(), ":"),
-			"workDir":    workDir.String(),
-			"outDir":     outDir.String(),
+			"classpath": strings.Join(jars.Strings(), ":"),
+			"workDir":   workDir.String(),
+			"outDir":    outDir.String(),
 		},
 	})
 
@@ -123,7 +124,7 @@
 
 	system.headerJars = jars
 
-	system.outputDir, system.outputDeps = TransformJarsToSystemModules(ctx, "java.base", jars)
+	system.outputDir, system.outputDeps = TransformJarsToSystemModules(ctx, jars)
 }
 
 func (system *SystemModules) DepsMutator(ctx android.BottomUpMutatorContext) {
diff --git a/ui/build/cleanbuild.go b/ui/build/cleanbuild.go
index 0a2b510..1dbeb26 100644
--- a/ui/build/cleanbuild.go
+++ b/ui/build/cleanbuild.go
@@ -107,6 +107,8 @@
 		productOut("obj/NOTICE_FILES"),
 		productOut("obj/PACKAGING"),
 		productOut("ramdisk"),
+		productOut("debug_ramdisk"),
+		productOut("test_harness_ramdisk"),
 		productOut("recovery"),
 		productOut("root"),
 		productOut("system"),
diff --git a/ui/build/config.go b/ui/build/config.go
index def3345..919b9ce 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -214,10 +214,14 @@
 	// Configure Java-related variables, including adding it to $PATH
 	java8Home := filepath.Join("prebuilts/jdk/jdk8", ret.HostPrebuiltTag())
 	java9Home := filepath.Join("prebuilts/jdk/jdk9", ret.HostPrebuiltTag())
+	java11Home := filepath.Join("prebuilts/jdk/jdk11", ret.HostPrebuiltTag())
 	javaHome := func() string {
 		if override, ok := ret.environ.Get("OVERRIDE_ANDROID_JAVA_HOME"); ok {
 			return override
 		}
+		if toolchain11, ok := ret.environ.Get("EXPERIMENTAL_USE_OPENJDK11_TOOLCHAIN"); ok && toolchain11 == "true" {
+			return java11Home
+		}
 		return java9Home
 	}()
 	absJavaHome := absPath(ctx, javaHome)
@@ -228,11 +232,13 @@
 	if path, ok := ret.environ.Get("PATH"); ok && path != "" {
 		newPath = append(newPath, path)
 	}
+
 	ret.environ.Unset("OVERRIDE_ANDROID_JAVA_HOME")
 	ret.environ.Set("JAVA_HOME", absJavaHome)
 	ret.environ.Set("ANDROID_JAVA_HOME", javaHome)
 	ret.environ.Set("ANDROID_JAVA8_HOME", java8Home)
 	ret.environ.Set("ANDROID_JAVA9_HOME", java9Home)
+	ret.environ.Set("ANDROID_JAVA11_HOME", java11Home)
 	ret.environ.Set("PATH", strings.Join(newPath, string(filepath.ListSeparator)))
 
 	outDir := ret.OutDir()