java_library support for building headers-only (a15790ac) · Commits · e / os / android_build_soong

android/neverallow.go

+8 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,7 @@ func init() {
		AddNeverAllowRules(createBp2BuildRule())
		AddNeverAllowRules(createCcStubsRule())
		AddNeverAllowRules(createJavaExcludeStaticLibsRule())
		AddNeverAllowRules(createProhibitHeaderOnlyRule())
		}

		// Add a NeverAllow rule to the set of rules to apply.
		@@ -264,6 +265,13 @@ func createJavaExcludeStaticLibsRule() Rule {
		Because("exclude_static_libs property is only allowed for java modules defined in build/soong, libcore, and frameworks/base/api")
		}

		func createProhibitHeaderOnlyRule() Rule {
		return NeverAllow().
		Without("name", "framework-minus-apex-headers").
		With("headers_only", "true").
		Because("headers_only can only be used for generating framework-minus-apex headers for non-updatable modules")
		}

		func neverallowMutator(ctx BottomUpMutatorContext) {
		m, ok := ctx.Module().(Module)
		if !ok {

android/neverallow_test.go

+16 −0

Original line number	Diff line number	Diff line
		@@ -361,6 +361,21 @@ var neverallowTests = []struct {
		`exclude_static_libs property is only allowed for java modules defined in build/soong, libcore, and frameworks/base/api`,
		},
		},
		// Test for only allowing headers_only for framework-minus-apex-headers
		{
		name: `"headers_only" outside framework-minus-apex-headers modules`,
		fs: map[string][]byte{
		"a/b/Android.bp": []byte(`
		java_library {
		name: "baz",
		headers_only: true,
		}
		`),
		},
		expectedErrors: []string{
		`headers_only can only be used for generating framework-minus-apex headers for non-updatable modules`,
		},
		},
		}

		var prepareForNeverAllowTest = GroupFixturePreparers(
		@@ -451,6 +466,7 @@ type mockJavaLibraryProperties struct {
		Sdk_version *string
		Uncompress_dex *bool
		Exclude_static_libs []string
		Headers_only *bool
		}

		type mockJavaLibraryModule struct {

java/androidmk.go

+3 −0

Original line number	Diff line number	Diff line
		@@ -79,6 +79,9 @@ func (library *Library) AndroidMkEntries() []android.AndroidMkEntries {
		} else if !library.ApexModuleBase.AvailableFor(android.AvailableToPlatform) {
		// Platform variant. If not available for the platform, we don't need Make module.
		entriesList = append(entriesList, android.AndroidMkEntries{Disabled: true})
		} else if library.properties.Headers_only {
		// If generating headers only then don't expose to Make.
		entriesList = append(entriesList, android.AndroidMkEntries{Disabled: true})
		} else {
		entriesList = append(entriesList, android.AndroidMkEntries{
		Class: "JAVA_LIBRARIES",

java/base.go

+44 −0

Original line number	Diff line number	Diff line
		@@ -192,6 +192,9 @@ type CommonProperties struct {

		// Additional srcJars tacked in by GeneratedJavaLibraryModule
		Generated_srcjars []android.Path `android:"mutated"`

		// If true, then only the headers are built and not the implementation jar.
		Headers_only bool
		}

		// Properties that are specific to device modules. Host module factories should not add these when
		@@ -574,6 +577,17 @@ func (j *Module) checkPlatformAPI(ctx android.ModuleContext) {
		}
		}

		func (j *Module) checkHeadersOnly(ctx android.ModuleContext) {
		if _, ok := ctx.Module().(android.SdkContext); ok {
		headersOnly := proptools.Bool(&j.properties.Headers_only)
		installable := proptools.Bool(j.properties.Installable)

		if headersOnly && installable {
		ctx.PropertyErrorf("headers_only", "This module has conflicting settings. headers_only is true which, which means this module doesn't generate an implementation jar. However installable is set to true.")
		}
		}
		}

		func (j *Module) addHostProperties() {
		j.AddProperties(
		&j.properties,
		@@ -1151,6 +1165,36 @@ func (j *Module) compile(ctx android.ModuleContext, extraSrcJars, extraClasspath
		// final R classes from the app.
		flags.classpath = append(android.CopyOf(extraClasspathJars), flags.classpath...)

		// If compiling headers then compile them and skip the rest
		if j.properties.Headers_only {
		if srcFiles.HasExt(".kt") {
		ctx.ModuleErrorf("Compiling headers_only with .kt not supported")
		}
		if ctx.Config().IsEnvFalse("TURBINE_ENABLED") \|\| disableTurbine {
		ctx.ModuleErrorf("headers_only is enabled but Turbine is disabled.")
		}

		_, j.headerJarFile =
		j.compileJavaHeader(ctx, uniqueJavaFiles, srcJars, deps, flags, jarName,
		extraCombinedJars)
		if ctx.Failed() {
		return
		}

		ctx.SetProvider(JavaInfoProvider, JavaInfo{
		HeaderJars: android.PathsIfNonNil(j.headerJarFile),
		TransitiveLibsHeaderJars: j.transitiveLibsHeaderJars,
		TransitiveStaticLibsHeaderJars: j.transitiveStaticLibsHeaderJars,
		AidlIncludeDirs: j.exportAidlIncludeDirs,
		ExportedPlugins: j.exportedPluginJars,
		ExportedPluginClasses: j.exportedPluginClasses,
		ExportedPluginDisableTurbine: j.exportedDisableTurbine,
		})

		j.outputFile = j.headerJarFile
		return
		}

		if srcFiles.HasExt(".kt") {
		// When using kotlin sources turbine is used to generate annotation processor sources,
		// including for annotation processors that generate API, so we can use turbine for

java/java.go

+1 −0

Original line number	Diff line number	Diff line
		@@ -692,6 +692,7 @@ func (j *Library) GenerateAndroidBuildActions(ctx android.ModuleContext) {
		}

		j.checkSdkVersions(ctx)
		j.checkHeadersOnly(ctx)
		if ctx.Device() {
		j.dexpreopter.installPath = j.dexpreopter.getInstallPath(
		ctx, android.PathForModuleInstall(ctx, "framework", j.Stem()+".jar"))