build.go

build.go

func Build(ctx Context, config Config) {
	...
	what := RunAll
	...
	if config.SkipKati() {
		ctx.Verboseln("Skipping Kati as requested")
		what = what &^ RunKati
	}
	if config.SkipKatiNinja() {
		ctx.Verboseln("Skipping use of Kati ninja as requested")
		what = what &^ RunKatiNinja
	}
	if config.SkipSoong() {
		ctx.Verboseln("Skipping use of Soong as requested")
		what = what &^ RunSoong
	}
	if config.SkipNinja() {
		ctx.Verboseln("Skipping Ninja as requested")
		what = what &^ RunNinja
	}
  	...
	if what&RunSoong != 0 {
		runSoong(ctx, config)
	}
	if what&RunKati != 0 {
		genKatiSuffix(ctx, config)
		runKatiCleanSpec(ctx, config)
		runKatiBuild(ctx, config)
		runKatiPackage(ctx, config)

		ioutil.WriteFile(config.LastKatiSuffixFile(), []byte(config.KatiSuffix()), 0666) // a+rw
	}
  	...
  	if what&RunNinja != 0 {
		if what&RunKati != 0 {
			installCleanIfNecessary(ctx, config)
		}
		runNinjaForBuild(ctx, config)
	}
	// Currently, using Bazel requires Kati and Soong to run first, so check whether to run Bazel last.
	if what&RunBazel != 0 {
		runBazel(ctx, config)
	}
}