Add support for skipping just kati

The existing --skip-make flag disables both the config step and the kati
step in the build. Add support for a --skip-kati flag that skips just
the kati step, and refactor things so that the logic is shared between
these two.

Bug: 174315599
Test: TARGET_PRODUCT=aosp_arm64 soong_ui --make-mode --skip-kati;
      (verify soong.variables is regenerated)
Change-Id: I75b1910fc1c12fcda130e37b7bc4c050131c7b33

ui/build/build.go

@@ -28,7 +28,7 @@ import (
 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() {
+	if !config.SkipKati() {
 		// Run soong_build with Kati for a hybrid build, e.g. running the
 		// AndroidMk singleton and postinstall commands. Communicate this to
 		// soong_build by writing an empty .soong.kati_enabled marker file in the
@@ -67,8 +67,8 @@ 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 we're in SkipKati mode, skip creating this file if it already exists
+	if config.SkipKati() {
 		if _, err := os.Stat(config.CombinedNinjaFile()); err == nil || !os.IsNotExist(err) {
 			return
 		}
@@ -208,10 +208,14 @@ func Build(ctx Context, config Config, what int) {
 
 	SetupPath(ctx, config)
 
-	if config.SkipMake() {
-		ctx.Verboseln("Skipping Make/Kati as requested")
-		// If Make/Kati is disabled, then explicitly build using Soong and Ninja.
-		what = what & (BuildSoong | BuildNinja)
+	if config.SkipConfig() {
+		ctx.Verboseln("Skipping Config as requested")
+		what = what &^ BuildProductConfig
+	}
+
+	if config.SkipKati() {
+		ctx.Verboseln("Skipping Kati as requested")
+		what = what &^ BuildKati
 	}
 
 	if config.StartGoma() {
@@ -276,7 +280,7 @@ func Build(ctx Context, config Config, what int) {
 	}
 
 	if what&BuildNinja != 0 {
-		if !config.SkipMake() {
+		if what&BuildKati != 0 {
 			installCleanIfNecessary(ctx, config)
 		}
 

ui/build/config.go

@@ -46,7 +46,8 @@ type configImpl struct {
 	verbose        bool
 	checkbuild     bool
 	dist           bool
-	skipMake       bool
+	skipConfig     bool
+	skipKati       bool
 	skipSoongTests bool
 
 	// From the product config
@@ -536,7 +537,10 @@ func (c *configImpl) parseArgs(ctx Context, args []string) {
 		} else if arg == "showcommands" {
 			c.verbose = true
 		} else if arg == "--skip-make" {
-			c.skipMake = true
+			c.skipConfig = true
+			c.skipKati = true
+		} else if arg == "--skip-kati" {
+			c.skipKati = true
 		} else if arg == "--skip-soong-tests" {
 			c.skipSoongTests = true
 		} else if len(arg) > 0 && arg[0] == '-' {
@@ -697,7 +701,7 @@ func (c *configImpl) DistDir() string {
 }
 
 func (c *configImpl) NinjaArgs() []string {
-	if c.skipMake {
+	if c.skipKati {
 		return c.arguments
 	}
 	return c.ninjaArgs
@@ -740,8 +744,12 @@ func (c *configImpl) IsVerbose() bool {
 	return c.verbose
 }
 
-func (c *configImpl) SkipMake() bool {
-	return c.skipMake
+func (c *configImpl) SkipKati() bool {
+	return c.skipKati
+}
+
+func (c *configImpl) SkipConfig() bool {
+	return c.skipConfig
 }
 
 func (c *configImpl) TargetProduct() string {

ui/build/soong.go

@@ -173,7 +173,7 @@ func runSoong(ctx Context, config Config) {
 
 	distGzipFile(ctx, config, config.SoongNinjaFile(), "soong")
 
-	if !config.SkipMake() {
+	if !config.SkipKati() {
 		distGzipFile(ctx, config, config.SoongAndroidMk(), "soong")
 		distGzipFile(ctx, config, config.SoongMakeVarsMk(), "soong")
 	}