Merge "stubs lib can export headers lib"

am: b55752827a

Change-Id: I5060665330da4906d42f9bb9e9e7e5de98256e6e

apex/apex_test.go

@@ -41,6 +41,7 @@ func testApex(t *testing.T, bp string) *android.TestContext {
 
 	ctx.RegisterModuleType("cc_library", android.ModuleFactoryAdaptor(cc.LibraryFactory))
 	ctx.RegisterModuleType("cc_library_shared", android.ModuleFactoryAdaptor(cc.LibrarySharedFactory))
+	ctx.RegisterModuleType("cc_library_headers", android.ModuleFactoryAdaptor(cc.LibraryHeaderFactory))
 	ctx.RegisterModuleType("cc_binary", android.ModuleFactoryAdaptor(cc.BinaryFactory))
 	ctx.RegisterModuleType("cc_object", android.ModuleFactoryAdaptor(cc.ObjectFactory))
 	ctx.RegisterModuleType("llndk_library", android.ModuleFactoryAdaptor(cc.LlndkLibraryFactory))
@@ -130,6 +131,7 @@ func testApex(t *testing.T, bp string) *android.TestContext {
 		"system/sepolicy/apex/otherapex-file_contexts": nil,
 		"mylib.cpp":                                    nil,
 		"myprebuilt":                                   nil,
+		"my_include":                                   nil,
 		"vendor/foo/devkeys/test.x509.pem":             nil,
 		"vendor/foo/devkeys/test.pk8":                  nil,
 		"vendor/foo/devkeys/testkey.avbpubkey":         nil,
@@ -774,3 +776,51 @@ func TestMacro(t *testing.T) {
 	ensureNotContains(t, mylibCFlags, "-D__ANDROID_APEX__=myapex")
 	ensureContains(t, mylibCFlags, "-D__ANDROID_APEX__=otherapex")
 }
+
+func TestHeaderLibsDependency(t *testing.T) {
+	ctx := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			native_shared_libs: ["mylib"],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		cc_library_headers {
+			name: "mylib_headers",
+			export_include_dirs: ["my_include"],
+			system_shared_libs: [],
+			stl: "none",
+		}
+
+		cc_library {
+			name: "mylib",
+			srcs: ["mylib.cpp"],
+			system_shared_libs: [],
+			stl: "none",
+			header_libs: ["mylib_headers"],
+			export_header_lib_headers: ["mylib_headers"],
+			stubs: {
+				versions: ["1", "2", "3"],
+			},
+		}
+
+		cc_library {
+			name: "otherlib",
+			srcs: ["mylib.cpp"],
+			system_shared_libs: [],
+			stl: "none",
+			shared_libs: ["mylib"],
+		}
+	`)
+
+	cFlags := ctx.ModuleForTests("otherlib", "android_arm64_armv8-a_core_static").Rule("cc").Args["cFlags"]
+
+	// Ensure that the include path of the header lib is exported to 'otherlib'
+	ensureContains(t, cFlags, "-Imy_include")
+}

cc/cc.go

@@ -1142,11 +1142,11 @@ func (c *Module) DepsMutator(actx android.BottomUpMutatorContext) {
 		deps.ReexportSharedLibHeaders, _ = rewriteNdkLibs(deps.ReexportSharedLibHeaders)
 	}
 
+	buildStubs := false
 	if c.linker != nil {
 		if library, ok := c.linker.(*libraryDecorator); ok {
 			if library.buildStubs() {
-				// Stubs lib does not have dependency to other libraries. Don't proceed.
-				return
+				buildStubs = true
 			}
 		}
 	}
@@ -1156,7 +1156,26 @@ func (c *Module) DepsMutator(actx android.BottomUpMutatorContext) {
 		if inList(lib, deps.ReexportHeaderLibHeaders) {
 			depTag = headerExportDepTag
 		}
-		actx.AddVariationDependencies(nil, depTag, lib)
+		if buildStubs {
+			imageVariation := "core"
+			if c.useVndk() {
+				imageVariation = "vendor"
+			} else if c.inRecovery() {
+				imageVariation = "recovery"
+			}
+			actx.AddFarVariationDependencies([]blueprint.Variation{
+				{Mutator: "arch", Variation: ctx.Target().String()},
+				{Mutator: "image", Variation: imageVariation},
+			}, depTag, lib)
+		} else {
+			actx.AddVariationDependencies(nil, depTag, lib)
+		}
+	}
+
+	if buildStubs {
+		// Stubs lib does not have dependency to other static/shared libraries.
+		// Don't proceed.
+		return
 	}
 
 	actx.AddVariationDependencies([]blueprint.Variation{