github.com/westcoastroms/westcoastroms-build@v0.0.0-20190928114312-2350e5a73030/build/soong/cmd/soong_build/main.go (about)

     1  // Copyright 2015 Google Inc. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package main
    16  
    17  import (
    18  	"flag"
    19  	"fmt"
    20  	"os"
    21  	"path/filepath"
    22  
    23  	"github.com/google/blueprint/bootstrap"
    24  
    25  	"android/soong/android"
    26  )
    27  
    28  var (
    29  	docFile string
    30  )
    31  
    32  func init() {
    33  	flag.StringVar(&docFile, "soong_docs", "", "build documentation file to output")
    34  }
    35  
    36  func newNameResolver(config android.Config) *android.NameResolver {
    37  	namespacePathsToExport := make(map[string]bool)
    38  
    39  	for _, namespaceName := range config.ExportedNamespaces() {
    40  		namespacePathsToExport[namespaceName] = true
    41  	}
    42  
    43  	namespacePathsToExport["."] = true // always export the root namespace
    44  
    45  	exportFilter := func(namespace *android.Namespace) bool {
    46  		return namespacePathsToExport[namespace.Path]
    47  	}
    48  
    49  	return android.NewNameResolver(exportFilter)
    50  }
    51  
    52  func main() {
    53  	flag.Parse()
    54  
    55  	// The top-level Blueprints file is passed as the first argument.
    56  	srcDir := filepath.Dir(flag.Arg(0))
    57  
    58  	ctx := android.NewContext()
    59  	ctx.Register()
    60  
    61  	configuration, err := android.NewConfig(srcDir, bootstrap.BuildDir)
    62  	if err != nil {
    63  		fmt.Fprintf(os.Stderr, "%s", err)
    64  		os.Exit(1)
    65  	}
    66  
    67  	if docFile != "" {
    68  		configuration.SetStopBefore(bootstrap.StopBeforePrepareBuildActions)
    69  	}
    70  
    71  	ctx.SetNameInterface(newNameResolver(configuration))
    72  
    73  	ctx.SetAllowMissingDependencies(configuration.AllowMissingDependencies())
    74  
    75  	bootstrap.Main(ctx.Context, configuration, configuration.ConfigFileName, configuration.ProductVariablesFileName)
    76  
    77  	if docFile != "" {
    78  		writeDocs(ctx, docFile)
    79  	}
    80  }