Add java config and share it with make

Add a java/config package to hold config information, and share
it with make through makevars.

Test: builds
Change-Id: I46c088bda0fe97a1823bfdd80fa692d0bf61da1b

Android.bp

@@ -188,6 +188,7 @@ bootstrap_go_package {
         "soong",
         "soong-android",
         "soong-genrule",
+        "soong-java-config",
     ],
     srcs: [
         "java/androidmk.go",
@@ -201,6 +202,19 @@ bootstrap_go_package {
     pluginFor: ["soong_build"],
 }
 
+bootstrap_go_package {
+    name: "soong-java-config",
+    pkgPath: "android/soong/java/config",
+    deps: [
+        "blueprint-proptools",
+        "soong-android",
+    ],
+    srcs: [
+        "java/config/config.go",
+        "java/config/makevars.go",
+    ],
+}
+
 bootstrap_go_package {
     name: "soong-python",
     pkgPath: "android/soong/python",

java/config/config.go

@@ -0,0 +1,23 @@
+// Copyright 2017 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 config
+
+import "android/soong/android"
+
+var (
+	DefaultLibraries = []string{"core-oj", "core-libart", "ext", "framework", "okhttp"}
+)
+
+var pctx = android.NewPackageContext("android/soong/java/config")

java/config/makevars.go

@@ -0,0 +1,29 @@
+// Copyright 2017 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 config
+
+import (
+	"strings"
+
+	"android/soong/android"
+)
+
+func init() {
+	android.RegisterMakeVarsProvider(pctx, makeVarsProvider)
+}
+
+func makeVarsProvider(ctx android.MakeVarsContext) {
+	ctx.Strict("TARGET_DEFAULT_JAVA_LIBRARIES", strings.Join(DefaultLibraries, " "))
+}

java/java.go

@@ -26,6 +26,7 @@ import (
 
 	"android/soong/android"
 	"android/soong/genrule"
+	"android/soong/java/config"
 )
 
 func init() {
@@ -169,8 +170,6 @@ func (j *Module) BootClasspath(ctx android.BaseContext) string {
 	}
 }
 
-var defaultJavaLibraries = []string{"core-libart", "legacy-test", "ext", "framework"}
-
 func (j *Module) deps(ctx android.BottomUpMutatorContext) {
 	var deps []string
 
@@ -180,7 +179,7 @@ func (j *Module) deps(ctx android.BottomUpMutatorContext) {
 			deps = append(deps, bootClasspath)
 		}
 		if ctx.Device() && j.deviceProperties.Sdk_version == "" {
-			deps = append(deps, defaultJavaLibraries...)
+			deps = append(deps, config.DefaultLibraries...)
 		}
 	}
 	deps = append(deps, j.properties.Java_libs...)
@@ -218,7 +217,7 @@ func (j *Module) collectDeps(ctx android.ModuleContext) (classpath android.Paths
 		if javaDep, ok := module.(JavaDependency); ok {
 			if otherName == j.BootClasspath(ctx) {
 				bootClasspath = android.OptionalPathForPath(javaDep.ClasspathFile())
-			} else if inList(otherName, defaultJavaLibraries) {
+			} else if inList(otherName, config.DefaultLibraries) {
 				classpath = append(classpath, javaDep.ClasspathFile())
 			} else if inList(otherName, j.properties.Java_libs) {
 				classpath = append(classpath, javaDep.ClasspathFile())