1369cdb280
Adds a java_system_modules module type that (when EXPERIMENTAL_USE_OPENJDK9 is set to true) converts a list of java library modules and prebuilt jars into system modules, and plumbs the system modules through to the javac command line. Also exports the location of the system modules to make variables, as well as the name of the default system module. Test: TestClasspath in java_test.go, runs automatically as part of the build Bug: 63986449 Change-Id: I27bd5d2010092422a27b69c91568e49010e02f40
433 lines
13 KiB
Go
433 lines
13 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package java
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// This file generates the final rules for compiling all Java. All properties related to
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// compiling should have been translated into javaBuilderFlags or another argument to the Transform*
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// functions.
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import (
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"strings"
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"github.com/google/blueprint"
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"android/soong/android"
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"android/soong/java/config"
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)
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var (
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pctx = android.NewPackageContext("android/soong/java")
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// Compiling java is not conducive to proper dependency tracking. The path-matches-class-name
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// requirement leads to unpredictable generated source file names, and a single .java file
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// will get compiled into multiple .class files if it contains inner classes. To work around
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// this, all java rules write into separate directories and then a post-processing step lists
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// the files in the the directory into a list file that later rules depend on (and sometimes
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// read from directly using @<listfile>)
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javac = pctx.AndroidGomaStaticRule("javac",
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blueprint.RuleParams{
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Command: `rm -rf "$outDir" "$annoDir" && mkdir -p "$outDir" "$annoDir" && ` +
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`${config.JavacWrapper}${config.JavacCmd} ${config.JavacHeapFlags} ${config.CommonJdkFlags} ` +
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`$javacFlags $bootClasspath $classpath ` +
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`-source $javaVersion -target $javaVersion ` +
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`-d $outDir -s $annoDir @$out.rsp && ` +
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`${config.SoongZipCmd} -jar -o $out -C $outDir -D $outDir`,
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CommandDeps: []string{"${config.JavacCmd}", "${config.SoongZipCmd}"},
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Rspfile: "$out.rsp",
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RspfileContent: "$in",
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},
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"javacFlags", "bootClasspath", "classpath", "outDir", "annoDir", "javaVersion")
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errorprone = pctx.AndroidStaticRule("errorprone",
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blueprint.RuleParams{
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Command: `rm -rf "$outDir" "$annoDir" && mkdir -p "$outDir" "$annoDir" && ` +
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`${config.ErrorProneCmd} ` +
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`$javacFlags $bootClasspath $classpath ` +
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`-source $javaVersion -target $javaVersion ` +
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`-d $outDir -s $annoDir @$out.rsp && ` +
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`${config.SoongZipCmd} -jar -o $out -C $outDir -D $outDir`,
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CommandDeps: []string{
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"${config.JavaCmd}",
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"${config.ErrorProneJavacJar}",
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"${config.ErrorProneJar}",
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"${config.SoongZipCmd}",
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},
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Rspfile: "$out.rsp",
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RspfileContent: "$in",
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},
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"javacFlags", "bootClasspath", "classpath", "outDir", "annoDir", "javaVersion")
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jar = pctx.AndroidStaticRule("jar",
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blueprint.RuleParams{
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Command: `${config.SoongZipCmd} -jar -o $out $jarArgs`,
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CommandDeps: []string{"${config.SoongZipCmd}"},
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},
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"jarArgs")
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combineJar = pctx.AndroidStaticRule("combineJar",
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blueprint.RuleParams{
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Command: `${config.MergeZipsCmd} -j $jarArgs $out $in`,
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CommandDeps: []string{"${config.MergeZipsCmd}"},
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},
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"jarArgs")
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desugar = pctx.AndroidStaticRule("desugar",
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blueprint.RuleParams{
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Command: `rm -rf $dumpDir && mkdir -p $dumpDir && ` +
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`${config.JavaCmd} ` +
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`-Djdk.internal.lambda.dumpProxyClasses=$$(cd $dumpDir && pwd) ` +
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`$javaFlags ` +
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`-jar ${config.DesugarJar} $classpathFlags $desugarFlags ` +
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`-i $in -o $out`,
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CommandDeps: []string{"${config.DesugarJar}"},
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},
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"javaFlags", "classpathFlags", "desugarFlags", "dumpDir")
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dx = pctx.AndroidStaticRule("dx",
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blueprint.RuleParams{
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Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
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`${config.DxCmd} --dex --output=$outDir $dxFlags $in && ` +
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`${config.SoongZipCmd} -o $outDir/classes.dex.jar -C $outDir -D $outDir && ` +
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`${config.MergeZipsCmd} -D -stripFile "*.class" $out $outDir/classes.dex.jar $in`,
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CommandDeps: []string{
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"${config.DxCmd}",
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"${config.SoongZipCmd}",
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"${config.MergeZipsCmd}",
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},
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},
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"outDir", "dxFlags")
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jarjar = pctx.AndroidStaticRule("jarjar",
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blueprint.RuleParams{
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Command: "${config.JavaCmd} -jar ${config.JarjarCmd} process $rulesFile $in $out",
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CommandDeps: []string{"${config.JavaCmd}", "${config.JarjarCmd}", "$rulesFile"},
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},
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"rulesFile")
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)
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func init() {
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pctx.Import("android/soong/java/config")
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}
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type javaBuilderFlags struct {
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javacFlags string
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dxFlags string
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bootClasspath classpath
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classpath classpath
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systemModules classpath
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desugarFlags string
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aidlFlags string
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javaVersion string
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protoFlags string
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protoOutFlag string
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}
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func TransformJavaToClasses(ctx android.ModuleContext, srcFiles, srcFileLists android.Paths,
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flags javaBuilderFlags, deps android.Paths) android.ModuleOutPath {
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return transformJavaToClasses(ctx, srcFiles, srcFileLists, flags, deps,
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"classes-compiled.jar", "", "javac", javac)
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}
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func RunErrorProne(ctx android.ModuleContext, srcFiles, srcFileLists android.Paths,
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flags javaBuilderFlags) android.Path {
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if config.ErrorProneJar == "" {
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ctx.ModuleErrorf("cannot build with Error Prone, missing external/error_prone?")
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return nil
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}
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return transformJavaToClasses(ctx, srcFiles, srcFileLists, flags, nil,
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"classes-errorprone.list", "-errorprone", "errorprone", errorprone)
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}
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// transformJavaToClasses takes source files and converts them to a jar containing .class files.
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// srcFiles is a list of paths to sources, srcFileLists is a list of paths to files that contain
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// paths to sources. There is no dependency on the sources passed through srcFileLists, those
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// must be added through the deps argument, which contains a list of paths that should be added
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// as implicit dependencies. flags contains various command line flags to be passed to the
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// compiler.
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//
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// This method may be used for different compilers, including javac and Error Prone. The rule
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// argument specifies which command line to use and desc sets the description of the rule that will
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// be printed at build time. The stem argument provides the file name of the output jar, and
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// suffix will be appended to various intermediate files and directories to avoid collisions when
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// this function is called twice in the same module directory.
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func transformJavaToClasses(ctx android.ModuleContext, srcFiles, srcFileLists android.Paths,
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flags javaBuilderFlags, deps android.Paths, stem, suffix, desc string,
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rule blueprint.Rule) android.ModuleOutPath {
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outputFile := android.PathForModuleOut(ctx, stem)
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javacFlags := flags.javacFlags
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if len(srcFileLists) > 0 {
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javacFlags += " " + android.JoinWithPrefix(srcFileLists.Strings(), "@")
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}
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deps = append(deps, srcFileLists...)
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var bootClasspath string
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if flags.javaVersion == "1.9" {
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deps = append(deps, flags.systemModules...)
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bootClasspath = flags.systemModules.JavaSystemModules(ctx.Device())
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} else {
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deps = append(deps, flags.bootClasspath...)
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bootClasspath = flags.bootClasspath.JavaBootClasspath(ctx.Device())
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}
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deps = append(deps, flags.classpath...)
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: rule,
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Description: desc,
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Output: outputFile,
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Inputs: srcFiles,
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Implicits: deps,
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Args: map[string]string{
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"javacFlags": javacFlags,
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"bootClasspath": bootClasspath,
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"classpath": flags.classpath.JavaClasspath(),
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"outDir": android.PathForModuleOut(ctx, "classes"+suffix).String(),
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"annoDir": android.PathForModuleOut(ctx, "anno"+suffix).String(),
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"javaVersion": flags.javaVersion,
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},
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})
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return outputFile
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}
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func TransformResourcesToJar(ctx android.ModuleContext, jarArgs []string,
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deps android.Paths) android.Path {
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outputFile := android.PathForModuleOut(ctx, "res.jar")
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: jar,
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Description: "jar",
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Output: outputFile,
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Implicits: deps,
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Args: map[string]string{
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"jarArgs": strings.Join(jarArgs, " "),
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},
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})
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return outputFile
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}
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func TransformJarsToJar(ctx android.ModuleContext, stem string, jars android.Paths,
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manifest android.OptionalPath, stripDirs bool) android.Path {
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outputFile := android.PathForModuleOut(ctx, stem)
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if len(jars) == 1 && !manifest.Valid() {
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return jars[0]
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}
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var deps android.Paths
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var jarArgs []string
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if manifest.Valid() {
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jarArgs = append(jarArgs, "-m "+manifest.String())
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deps = append(deps, manifest.Path())
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}
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if stripDirs {
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jarArgs = append(jarArgs, "-D")
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}
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: combineJar,
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Description: "combine jars",
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Output: outputFile,
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Inputs: jars,
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Implicits: deps,
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Args: map[string]string{
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"jarArgs": strings.Join(jarArgs, " "),
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},
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})
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return outputFile
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}
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func TransformDesugar(ctx android.ModuleContext, classesJar android.Path,
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flags javaBuilderFlags) android.Path {
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outputFile := android.PathForModuleOut(ctx, "classes-desugar.jar")
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dumpDir := android.PathForModuleOut(ctx, "desugar_dumped_classes")
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javaFlags := ""
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if ctx.AConfig().UseOpenJDK9() {
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javaFlags = "--add-opens java.base/java.lang.invoke=ALL-UNNAMED"
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}
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var desugarFlags []string
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desugarFlags = append(desugarFlags, flags.bootClasspath.DesugarBootClasspath()...)
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desugarFlags = append(desugarFlags, flags.classpath.DesugarClasspath()...)
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var deps android.Paths
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deps = append(deps, flags.bootClasspath...)
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deps = append(deps, flags.classpath...)
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: desugar,
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Description: "desugar",
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Output: outputFile,
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Input: classesJar,
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Implicits: deps,
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Args: map[string]string{
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"dumpDir": dumpDir.String(),
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"javaFlags": javaFlags,
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"classpathFlags": strings.Join(desugarFlags, " "),
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"desugarFlags": flags.desugarFlags,
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},
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})
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return outputFile
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}
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// Converts a classes.jar file to classes*.dex, then combines the dex files with any resources
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// in the classes.jar file into a dex jar.
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func TransformClassesJarToDexJar(ctx android.ModuleContext, stem string, classesJar android.Path,
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flags javaBuilderFlags) android.Path {
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outDir := android.PathForModuleOut(ctx, "dex")
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outputFile := android.PathForModuleOut(ctx, stem)
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: dx,
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Description: "dx",
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Output: outputFile,
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Input: classesJar,
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Args: map[string]string{
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"dxFlags": flags.dxFlags,
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"outDir": outDir.String(),
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},
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})
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return outputFile
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}
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func TransformJarJar(ctx android.ModuleContext, classesJar android.Path, rulesFile android.Path) android.ModuleOutPath {
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outputFile := android.PathForModuleOut(ctx, "classes-jarjar.jar")
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ctx.ModuleBuild(pctx, android.ModuleBuildParams{
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Rule: jarjar,
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Description: "jarjar",
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Output: outputFile,
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Input: classesJar,
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Implicit: rulesFile,
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Args: map[string]string{
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"rulesFile": rulesFile.String(),
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},
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})
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return outputFile
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}
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type classpath []android.Path
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// Returns a -classpath argument in the form java or javac expects
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func (x *classpath) JavaClasspath() string {
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if len(*x) > 0 {
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return "-classpath " + strings.Join(x.Strings(), ":")
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} else {
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return ""
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}
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}
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// Returns a -processorpath argument in the form java or javac expects
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func (x *classpath) JavaProcessorpath() string {
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if len(*x) > 0 {
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return "-processorpath " + strings.Join(x.Strings(), ":")
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} else {
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return ""
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}
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}
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// Returns a -bootclasspath argument in the form java or javac expects. If forceEmpty is true,
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// returns -bootclasspath "" if the bootclasspath is empty to ensure javac does not fall back to the
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// default bootclasspath.
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func (x *classpath) JavaBootClasspath(forceEmpty bool) string {
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if len(*x) > 0 {
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return "-bootclasspath " + strings.Join(x.Strings(), ":")
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} else if forceEmpty {
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return `-bootclasspath ""`
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} else {
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return ""
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}
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}
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// Returns a --system argument in the form javac expects with -source 1.9. If forceEmpty is true,
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// returns --system=none if the list is empty to ensure javac does not fall back to the default
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// system modules.
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func (x *classpath) JavaSystemModules(forceEmpty bool) string {
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if len(*x) > 1 {
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panic("more than one system module")
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} else if len(*x) == 1 {
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return "--system=" + strings.TrimSuffix((*x)[0].String(), "lib/modules")
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} else if forceEmpty {
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return "--system=none"
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} else {
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return ""
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}
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}
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func (x *classpath) DesugarBootClasspath() []string {
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if x == nil || *x == nil {
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return nil
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}
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flags := make([]string, len(*x))
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for i, v := range *x {
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flags[i] = "--bootclasspath_entry " + v.String()
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}
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return flags
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}
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func (x *classpath) DesugarClasspath() []string {
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if x == nil || *x == nil {
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return nil
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}
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flags := make([]string, len(*x))
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for i, v := range *x {
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flags[i] = "--classpath_entry " + v.String()
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}
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return flags
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}
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// Append an android.Paths to the end of the classpath list
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func (x *classpath) AddPaths(paths android.Paths) {
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for _, path := range paths {
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*x = append(*x, path)
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}
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}
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// Convert a classpath to an android.Paths
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func (x *classpath) Paths() android.Paths {
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return append(android.Paths(nil), (*x)...)
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}
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func (x *classpath) Strings() []string {
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if x == nil {
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return nil
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}
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ret := make([]string, len(*x))
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for i, path := range *x {
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ret[i] = path.String()
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}
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return ret
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}
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