150 lines
5.1 KiB
Go
150 lines
5.1 KiB
Go
// Copyright 2017 Google Inc. All rights reserved.
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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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import (
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"fmt"
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"io"
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"strings"
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"github.com/google/blueprint"
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"android/soong/android"
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)
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// OpenJDK 9 introduces the concept of "system modules", which replace the bootclasspath. This
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// file will produce the rules necessary to convert each unique set of bootclasspath jars into
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// system modules in a runtime image using the jmod and jlink tools.
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func init() {
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android.RegisterModuleType("java_system_modules", SystemModulesFactory)
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pctx.SourcePathVariable("moduleInfoJavaPath", "build/soong/scripts/jars-to-module-info-java.sh")
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}
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var (
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jarsTosystemModules = pctx.AndroidStaticRule("jarsTosystemModules", blueprint.RuleParams{
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Command: `rm -rf ${outDir} ${workDir} && mkdir -p ${workDir}/jmod && ` +
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`${moduleInfoJavaPath} ${moduleName} $in > ${workDir}/module-info.java && ` +
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`${config.JavacCmd} --system=none --patch-module=java.base=${classpath} ${workDir}/module-info.java && ` +
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`${config.SoongZipCmd} -jar -o ${workDir}/classes.jar -C ${workDir} -f ${workDir}/module-info.class && ` +
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`${config.MergeZipsCmd} -j ${workDir}/module.jar ${workDir}/classes.jar $in && ` +
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`${config.JmodCmd} create --module-version 9 --target-platform android ` +
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` --class-path ${workDir}/module.jar ${workDir}/jmod/${moduleName}.jmod && ` +
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`${config.JlinkCmd} --module-path ${workDir}/jmod --add-modules ${moduleName} --output ${outDir} ` +
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// Note: The system-modules jlink plugin is disabled because (a) it is not
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// useful on Android, and (b) it causes errors with later versions of jlink
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// when the jdk.internal.module is absent from java.base (as it is here).
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` --disable-plugin system-modules && ` +
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`cp ${config.JrtFsJar} ${outDir}/lib/`,
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CommandDeps: []string{
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"${moduleInfoJavaPath}",
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"${config.JavacCmd}",
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"${config.SoongZipCmd}",
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"${config.MergeZipsCmd}",
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"${config.JmodCmd}",
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"${config.JlinkCmd}",
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"${config.JrtFsJar}",
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},
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},
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"moduleName", "classpath", "outDir", "workDir")
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)
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func TransformJarsToSystemModules(ctx android.ModuleContext, moduleName string, jars android.Paths) (android.Path, android.Paths) {
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outDir := android.PathForModuleOut(ctx, "system")
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workDir := android.PathForModuleOut(ctx, "modules")
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outputFile := android.PathForModuleOut(ctx, "system/lib/modules")
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outputs := android.WritablePaths{
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outputFile,
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android.PathForModuleOut(ctx, "system/lib/jrt-fs.jar"),
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android.PathForModuleOut(ctx, "system/release"),
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: jarsTosystemModules,
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Description: "system modules",
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Outputs: outputs,
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Inputs: jars,
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Args: map[string]string{
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"moduleName": moduleName,
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"classpath": strings.Join(jars.Strings(), ":"),
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"workDir": workDir.String(),
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"outDir": outDir.String(),
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},
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})
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return outDir, outputs.Paths()
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}
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func SystemModulesFactory() android.Module {
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module := &SystemModules{}
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module.AddProperties(&module.properties)
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android.InitAndroidArchModule(module, android.HostAndDeviceSupported, android.MultilibCommon)
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android.InitDefaultableModule(module)
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return module
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}
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type SystemModules struct {
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android.ModuleBase
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android.DefaultableModuleBase
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properties SystemModulesProperties
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outputDir android.Path
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outputDeps android.Paths
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}
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type SystemModulesProperties struct {
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// List of java library modules that should be included in the system modules
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Libs []string
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}
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func (system *SystemModules) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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var jars android.Paths
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ctx.VisitDirectDepsWithTag(libTag, func(module android.Module) {
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dep, _ := module.(Dependency)
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jars = append(jars, dep.HeaderJars()...)
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})
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system.outputDir, system.outputDeps = TransformJarsToSystemModules(ctx, "java.base", jars)
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}
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func (system *SystemModules) DepsMutator(ctx android.BottomUpMutatorContext) {
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ctx.AddVariationDependencies(nil, libTag, system.properties.Libs...)
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}
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func (system *SystemModules) AndroidMk() android.AndroidMkData {
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return android.AndroidMkData{
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Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
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fmt.Fprintln(w)
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makevar := "SOONG_SYSTEM_MODULES_" + name
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fmt.Fprintln(w, makevar, ":=$=", system.outputDir.String())
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fmt.Fprintln(w)
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makevar = "SOONG_SYSTEM_MODULES_LIBS_" + name
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fmt.Fprintln(w, makevar, ":=$=", strings.Join(system.properties.Libs, " "))
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fmt.Fprintln(w)
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makevar = "SOONG_SYSTEM_MODULES_DEPS_" + name
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fmt.Fprintln(w, makevar, ":=$=", strings.Join(system.outputDeps.Strings(), " "))
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fmt.Fprintln(w)
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fmt.Fprintln(w, name+":", "$("+makevar+")")
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fmt.Fprintln(w, ".PHONY:", name)
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},
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}
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}
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