Support java libraries, binaries, and prebuilts
Add support for compiling java libraries (.jar files with
or without .dex), java binaries (.jar files with a wrapper
script to run them), and java prebuilts (for the SDK .jars)
Change-Id: Id624da64c92cf20c6d9577c6bb06e5b212af0d1b
diff --git a/java/builder.go b/java/builder.go
new file mode 100644
index 0000000..2f9d701
--- /dev/null
+++ b/java/builder.go
@@ -0,0 +1,189 @@
+// Copyright 2015 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 java
+
+// This file generates the final rules for compiling all Java. All properties related to
+// compiling should have been translated into javaBuilderFlags or another argument to the Transform*
+// functions.
+
+import (
+ "path/filepath"
+ "strings"
+
+ "android/soong/common"
+
+ "github.com/google/blueprint"
+ "github.com/google/blueprint/bootstrap"
+)
+
+var (
+ pctx = blueprint.NewPackageContext("android/soong/java")
+
+ // Compiling java is not conducive to proper dependency tracking. The path-matches-class-name
+ // requirement leads to unpredictable generated source file names, and a single .java file
+ // will get compiled into multiple .class files if it contains inner classes. To work around
+ // this, all java rules write into separate directories and then a post-processing step lists
+ // the files in the the directory into a list file that later rules depend on (and sometimes
+ // read from directly using @<listfile>)
+ cc = pctx.StaticRule("javac",
+ blueprint.RuleParams{
+ Command: `$javacCmd -encoding UTF-8 $javacFlags $bootClasspath $classpath ` +
+ `-extdirs "" -d $outDir @$out.rsp || ( rm -rf $outDir; exit 41 ) && ` +
+ `find $outDir -name "*.class" > $out`,
+ Rspfile: "$out.rsp",
+ RspfileContent: "$in",
+ Description: "javac $outDir",
+ },
+ "javacCmd", "javacFlags", "bootClasspath", "classpath", "outDir")
+
+ jar = pctx.StaticRule("jar",
+ blueprint.RuleParams{
+ Command: `$jarCmd -o $out $jarArgs`,
+ Description: "jar $out",
+ },
+ "jarCmd", "jarArgs")
+
+ dx = pctx.StaticRule("dx",
+ blueprint.RuleParams{
+ Command: "$dxCmd --dex --output=$out $dxFlags $in",
+ Description: "dex $out",
+ },
+ "outDir", "dxFlags")
+)
+
+func init() {
+ pctx.StaticVariable("commonJdkFlags", "-source 1.7 -target 1.7 -Xmaxerrs 9999999")
+ pctx.StaticVariable("javacCmd", "javac -J-Xmx1024M $commonJdkFlags")
+ pctx.StaticVariable("jarCmd", filepath.Join(bootstrap.BinDir, "soong_jar"))
+ pctx.VariableFunc("dxCmd", func(c interface{}) (string, error) {
+ return c.(Config).HostBinTool("dx")
+ })
+}
+
+type javaBuilderFlags struct {
+ javacFlags string
+ dxFlags string
+ bootClasspath string
+ classpath string
+}
+
+type jarSpec struct {
+ fileList, dir string
+}
+
+func (j jarSpec) soongJarArgs() string {
+ return "-C " + j.dir + " -l " + j.fileList
+}
+
+func TransformJavaToClasses(ctx common.AndroidModuleContext, srcFiles []string,
+ flags javaBuilderFlags, deps []string) jarSpec {
+
+ classDir := filepath.Join(common.ModuleOutDir(ctx), "classes")
+ classFileList := filepath.Join(classDir, "classes.list")
+
+ ctx.Build(pctx, blueprint.BuildParams{
+ Rule: cc,
+ Outputs: []string{classFileList},
+ Inputs: srcFiles,
+ Implicits: deps,
+ Args: map[string]string{
+ "javacFlags": flags.javacFlags,
+ "bootClasspath": flags.bootClasspath,
+ "classpath": flags.classpath,
+ "outDir": classDir,
+ },
+ })
+
+ return jarSpec{classFileList, classDir}
+}
+
+func TransformClassesToJar(ctx common.AndroidModuleContext, classes []jarSpec,
+ manifest string) string {
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), "classes-full-debug.jar")
+
+ deps := []string{}
+ jarArgs := []string{}
+
+ for _, j := range classes {
+ deps = append(deps, j.fileList)
+ jarArgs = append(jarArgs, j.soongJarArgs())
+ }
+
+ if manifest != "" {
+ deps = append(deps, manifest)
+ jarArgs = append(jarArgs, "-m "+manifest)
+ }
+
+ deps = append(deps, "$jarCmd")
+
+ ctx.Build(pctx, blueprint.BuildParams{
+ Rule: jar,
+ Outputs: []string{outputFile},
+ Implicits: deps,
+ Args: map[string]string{
+ "jarArgs": strings.Join(jarArgs, " "),
+ },
+ })
+
+ return outputFile
+}
+
+func TransformClassesJarToDex(ctx common.AndroidModuleContext, classesJar string,
+ flags javaBuilderFlags) string {
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), "classes.dex")
+
+ ctx.Build(pctx, blueprint.BuildParams{
+ Rule: dx,
+ Outputs: []string{outputFile},
+ Inputs: []string{classesJar},
+ Implicits: []string{"$dxCmd"},
+ Args: map[string]string{
+ "dxFlags": flags.dxFlags,
+ },
+ })
+
+ return outputFile
+}
+
+func TransformDexToJavaLib(ctx common.AndroidModuleContext, resources []jarSpec,
+ dexFile string) string {
+
+ outputFile := filepath.Join(common.ModuleOutDir(ctx), "javalib.jar")
+ var deps []string
+ var jarArgs []string
+
+ for _, j := range resources {
+ deps = append(deps, j.fileList)
+ jarArgs = append(jarArgs, j.soongJarArgs())
+ }
+
+ dexDir, _ := filepath.Split(dexFile)
+ jarArgs = append(jarArgs, "-C "+dexDir+" -f "+dexFile)
+
+ deps = append(deps, "$jarCmd", dexFile)
+
+ ctx.Build(pctx, blueprint.BuildParams{
+ Rule: jar,
+ Outputs: []string{outputFile},
+ Implicits: deps,
+ Args: map[string]string{
+ "jarArgs": strings.Join(jarArgs, " "),
+ },
+ })
+
+ return outputFile
+}