146 lines
4.1 KiB
Go
146 lines
4.1 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 main
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import (
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"flag"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"time"
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"github.com/google/blueprint/bootstrap"
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"android/soong/android"
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)
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var (
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docFile string
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)
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func init() {
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flag.StringVar(&docFile, "soong_docs", "", "build documentation file to output")
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}
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func newNameResolver(config android.Config) *android.NameResolver {
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namespacePathsToExport := make(map[string]bool)
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for _, namespaceName := range config.ExportedNamespaces() {
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namespacePathsToExport[namespaceName] = true
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}
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namespacePathsToExport["."] = true // always export the root namespace
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exportFilter := func(namespace *android.Namespace) bool {
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return namespacePathsToExport[namespace.Path]
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}
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return android.NewNameResolver(exportFilter)
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}
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func main() {
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if android.SoongDelveListen != "" {
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if android.SoongDelvePath == "" {
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fmt.Fprintln(os.Stderr, "SOONG_DELVE is set but failed to find dlv")
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os.Exit(1)
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}
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pid := strconv.Itoa(os.Getpid())
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cmd := []string{android.SoongDelvePath,
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"attach", pid,
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"--headless",
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"-l", android.SoongDelveListen,
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"--api-version=2",
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"--accept-multiclient",
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"--log",
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}
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fmt.Println("Starting", strings.Join(cmd, " "))
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dlv := exec.Command(cmd[0], cmd[1:]...)
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dlv.Stdout = os.Stdout
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dlv.Stderr = os.Stderr
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dlv.Stdin = nil
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// Put dlv into its own process group so we can kill it and the child process it starts.
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dlv.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
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err := dlv.Start()
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if err != nil {
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// Print the error starting dlv and continue.
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fmt.Println(err)
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} else {
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// Kill the process group for dlv when soong_build exits.
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defer syscall.Kill(-dlv.Process.Pid, syscall.SIGKILL)
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// Wait to give dlv a chance to connect and pause the process.
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time.Sleep(time.Second)
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}
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}
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flag.Parse()
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// The top-level Blueprints file is passed as the first argument.
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srcDir := filepath.Dir(flag.Arg(0))
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ctx := android.NewContext()
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ctx.Register()
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configuration, err := android.NewConfig(srcDir, bootstrap.BuildDir)
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if err != nil {
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fmt.Fprintf(os.Stderr, "%s", err)
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os.Exit(1)
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}
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if docFile != "" {
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configuration.SetStopBefore(bootstrap.StopBeforePrepareBuildActions)
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}
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ctx.SetNameInterface(newNameResolver(configuration))
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ctx.SetAllowMissingDependencies(configuration.AllowMissingDependencies())
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extraNinjaDeps := []string{configuration.ConfigFileName, configuration.ProductVariablesFileName}
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// Read the SOONG_DELVE again through configuration so that there is a dependency on the environment variable
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// and soong_build will rerun when it is set for the first time.
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if listen := configuration.Getenv("SOONG_DELVE"); listen != "" {
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// Add a non-existent file to the dependencies so that soong_build will rerun when the debugger is
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// enabled even if it completed successfully.
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extraNinjaDeps = append(extraNinjaDeps, filepath.Join(configuration.BuildDir(), "always_rerun_for_delve"))
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}
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bootstrap.Main(ctx.Context, configuration, extraNinjaDeps...)
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if docFile != "" {
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if err := writeDocs(ctx, docFile); err != nil {
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fmt.Fprintf(os.Stderr, "%s", err)
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os.Exit(1)
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}
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}
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// TODO(ccross): make this a command line argument. Requires plumbing through blueprint
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// to affect the command line of the primary builder.
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if docFile == "" {
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metricsFile := filepath.Join(bootstrap.BuildDir, "soong_build_metrics.pb")
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err = android.WriteMetrics(configuration, metricsFile)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error writing soong_build metrics %s: %s", metricsFile, err)
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os.Exit(1)
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}
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}
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}
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