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// Copyright 2017 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 build
import (
"io/ioutil"
"os"
"path/filepath"
"text/template"
)
// Ensures the out directory exists, and has the proper files to prevent kati
// from recursing into it.
func SetupOutDir(ctx Context, config Config) {
ensureEmptyFileExists(ctx, filepath.Join(config.OutDir(), "Android.mk"))
ensureEmptyFileExists(ctx, filepath.Join(config.OutDir(), "CleanSpec.mk"))
if !config.SkipMake() {
ensureEmptyFileExists(ctx, filepath.Join(config.SoongOutDir(), ".soong.in_make"))
}
// The ninja_build file is used by our buildbots to understand that the output
// can be parsed as ninja output.
ensureEmptyFileExists(ctx, filepath.Join(config.OutDir(), "ninja_build"))
ensureEmptyFileExists(ctx, filepath.Join(config.OutDir(), ".out-dir"))
}
var combinedBuildNinjaTemplate = template.Must(template.New("combined").Parse(`
builddir = {{.OutDir}}
pool local_pool
depth = {{.Parallel}}
build _kati_always_build_: phony
{{if .HasKatiSuffix}}subninja {{.KatiBuildNinjaFile}}
subninja {{.KatiPackageNinjaFile}}
{{end -}}
subninja {{.SoongNinjaFile}}
`))
func createCombinedBuildNinjaFile(ctx Context, config Config) {
// If we're in SkipMake mode, skip creating this file if it already exists
if config.SkipMake() {
if _, err := os.Stat(config.CombinedNinjaFile()); err == nil || !os.IsNotExist(err) {
return
}
}
file, err := os.Create(config.CombinedNinjaFile())
if err != nil {
ctx.Fatalln("Failed to create combined ninja file:", err)
}
defer file.Close()
if err := combinedBuildNinjaTemplate.Execute(file, config); err != nil {
ctx.Fatalln("Failed to write combined ninja file:", err)
}
}
const (
BuildNone = iota
BuildProductConfig = 1 << iota
BuildSoong = 1 << iota
BuildKati = 1 << iota
BuildNinja = 1 << iota
RunBuildTests = 1 << iota
BuildAll = BuildProductConfig | BuildSoong | BuildKati | BuildNinja
)
func checkProblematicFiles(ctx Context) {
files := []string{"Android.mk", "CleanSpec.mk"}
for _, file := range files {
if _, err := os.Stat(file); !os.IsNotExist(err) {
absolute := absPath(ctx, file)
ctx.Printf("Found %s in tree root. This file needs to be removed to build.\n", file)
ctx.Fatalf(" rm %s\n", absolute)
}
}
}
func checkCaseSensitivity(ctx Context, config Config) {
outDir := config.OutDir()
lowerCase := filepath.Join(outDir, "casecheck.txt")
upperCase := filepath.Join(outDir, "CaseCheck.txt")
lowerData := "a"
upperData := "B"
err := ioutil.WriteFile(lowerCase, []byte(lowerData), 0777)
if err != nil {
ctx.Fatalln("Failed to check case sensitivity:", err)
}
err = ioutil.WriteFile(upperCase, []byte(upperData), 0777)
if err != nil {
ctx.Fatalln("Failed to check case sensitivity:", err)
}
res, err := ioutil.ReadFile(lowerCase)
if err != nil {
ctx.Fatalln("Failed to check case sensitivity:", err)
}
if string(res) != lowerData {
ctx.Println("************************************************************")
ctx.Println("You are building on a case-insensitive filesystem.")
ctx.Println("Please move your source tree to a case-sensitive filesystem.")
ctx.Println("************************************************************")
ctx.Fatalln("Case-insensitive filesystems not supported")
}
}
func help(ctx Context, config Config, what int) {
cmd := Command(ctx, config, "help.sh", "build/make/help.sh")
cmd.Sandbox = dumpvarsSandbox
cmd.RunAndPrintOrFatal()
}
// Build the tree. The 'what' argument can be used to chose which components of
// the build to run.
func Build(ctx Context, config Config, what int) {
ctx.Verboseln("Starting build with args:", config.Arguments())
ctx.Verboseln("Environment:", config.Environment().Environ())
if config.SkipMake() {
ctx.Verboseln("Skipping Make/Kati as requested")
what = what & (BuildSoong | BuildNinja)
}
if inList("help", config.Arguments()) {
help(ctx, config, what)
return
} else if inList("clean", config.Arguments()) || inList("clobber", config.Arguments()) {
clean(ctx, config, what)
return
}
// Make sure that no other Soong process is running with the same output directory
buildLock := BecomeSingletonOrFail(ctx, config)
defer buildLock.Unlock()
checkProblematicFiles(ctx)
SetupOutDir(ctx, config)
checkCaseSensitivity(ctx, config)
ensureEmptyDirectoriesExist(ctx, config.TempDir())
SetupPath(ctx, config)
if config.StartGoma() {
// Ensure start Goma compiler_proxy
startGoma(ctx, config)
}
if what&BuildProductConfig != 0 {
// Run make for product config
runMakeProductConfig(ctx, config)
}
if inList("installclean", config.Arguments()) {
installClean(ctx, config, what)
ctx.Println("Deleted images and staging directories.")
return
} else if inList("dataclean", config.Arguments()) {
dataClean(ctx, config, what)
ctx.Println("Deleted data files.")
return
}
if what&BuildSoong != 0 {
// Run Soong
runSoong(ctx, config)
}
if what&BuildKati != 0 {
// Run ckati
genKatiSuffix(ctx, config)
runKatiCleanSpec(ctx, config)
runKatiBuild(ctx, config)
runKatiPackage(ctx, config)
ioutil.WriteFile(config.LastKatiSuffixFile(), []byte(config.KatiSuffix()), 0777)
} else {
// Load last Kati Suffix if it exists
if katiSuffix, err := ioutil.ReadFile(config.LastKatiSuffixFile()); err == nil {
ctx.Verboseln("Loaded previous kati config:", string(katiSuffix))
config.SetKatiSuffix(string(katiSuffix))
}
}
// Write combined ninja file
createCombinedBuildNinjaFile(ctx, config)
if what&RunBuildTests != 0 {
testForDanglingRules(ctx, config)
}
if what&BuildNinja != 0 {
if !config.SkipMake() {
installCleanIfNecessary(ctx, config)
}
// Run ninja
runNinja(ctx, config)
}
}
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